//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
-// This file contains the X86 implementation of the MRegisterInfo class. This
-// file is responsible for the frame pointer elimination optimization on X86.
+// This file contains the X86 implementation of the TargetRegisterInfo class.
+// This file is responsible for the frame pointer elimination optimization
+// on X86.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineLocation.h"
-#include "llvm/CodeGen/SSARegMap.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/Support/CommandLine.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/Support/Compiler.h"
using namespace llvm;
-namespace {
- cl::opt<bool>
- NoFusing("disable-spill-fusing",
- cl::desc("Disable fusing of spill code into instructions"));
- cl::opt<bool>
- PrintFailedFusing("print-failed-fuse-candidates",
- cl::desc("Print instructions that the allocator wants to"
- " fuse, but the X86 backend currently can't"),
- cl::Hidden);
-}
-
X86RegisterInfo::X86RegisterInfo(X86TargetMachine &tm,
const TargetInstrInfo &tii)
: X86GenRegisterInfo(X86::ADJCALLSTACKDOWN, X86::ADJCALLSTACKUP),
// Cache some information.
const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
Is64Bit = Subtarget->is64Bit();
+ IsWin64 = Subtarget->isTargetWin64();
StackAlign = TM.getFrameInfo()->getStackAlignment();
if (Is64Bit) {
SlotSize = 8;
StackPtr = X86::ESP;
FramePtr = X86::EBP;
}
-
- SmallVector<unsigned,16> AmbEntries;
- static const unsigned OpTbl2Addr[][2] = {
- { X86::ADC32ri, X86::ADC32mi },
- { X86::ADC32ri8, X86::ADC32mi8 },
- { X86::ADC32rr, X86::ADC32mr },
- { X86::ADC64ri32, X86::ADC64mi32 },
- { X86::ADC64ri8, X86::ADC64mi8 },
- { X86::ADC64rr, X86::ADC64mr },
- { X86::ADD16ri, X86::ADD16mi },
- { X86::ADD16ri8, X86::ADD16mi8 },
- { X86::ADD16rr, X86::ADD16mr },
- { X86::ADD32ri, X86::ADD32mi },
- { X86::ADD32ri8, X86::ADD32mi8 },
- { X86::ADD32rr, X86::ADD32mr },
- { X86::ADD64ri32, X86::ADD64mi32 },
- { X86::ADD64ri8, X86::ADD64mi8 },
- { X86::ADD64rr, X86::ADD64mr },
- { X86::ADD8ri, X86::ADD8mi },
- { X86::ADD8rr, X86::ADD8mr },
- { X86::AND16ri, X86::AND16mi },
- { X86::AND16ri8, X86::AND16mi8 },
- { X86::AND16rr, X86::AND16mr },
- { X86::AND32ri, X86::AND32mi },
- { X86::AND32ri8, X86::AND32mi8 },
- { X86::AND32rr, X86::AND32mr },
- { X86::AND64ri32, X86::AND64mi32 },
- { X86::AND64ri8, X86::AND64mi8 },
- { X86::AND64rr, X86::AND64mr },
- { X86::AND8ri, X86::AND8mi },
- { X86::AND8rr, X86::AND8mr },
- { X86::DEC16r, X86::DEC16m },
- { X86::DEC32r, X86::DEC32m },
- { X86::DEC64_16r, X86::DEC64_16m },
- { X86::DEC64_32r, X86::DEC64_32m },
- { X86::DEC64r, X86::DEC64m },
- { X86::DEC8r, X86::DEC8m },
- { X86::INC16r, X86::INC16m },
- { X86::INC32r, X86::INC32m },
- { X86::INC64_16r, X86::INC64_16m },
- { X86::INC64_32r, X86::INC64_32m },
- { X86::INC64r, X86::INC64m },
- { X86::INC8r, X86::INC8m },
- { X86::NEG16r, X86::NEG16m },
- { X86::NEG32r, X86::NEG32m },
- { X86::NEG64r, X86::NEG64m },
- { X86::NEG8r, X86::NEG8m },
- { X86::NOT16r, X86::NOT16m },
- { X86::NOT32r, X86::NOT32m },
- { X86::NOT64r, X86::NOT64m },
- { X86::NOT8r, X86::NOT8m },
- { X86::OR16ri, X86::OR16mi },
- { X86::OR16ri8, X86::OR16mi8 },
- { X86::OR16rr, X86::OR16mr },
- { X86::OR32ri, X86::OR32mi },
- { X86::OR32ri8, X86::OR32mi8 },
- { X86::OR32rr, X86::OR32mr },
- { X86::OR64ri32, X86::OR64mi32 },
- { X86::OR64ri8, X86::OR64mi8 },
- { X86::OR64rr, X86::OR64mr },
- { X86::OR8ri, X86::OR8mi },
- { X86::OR8rr, X86::OR8mr },
- { X86::ROL16r1, X86::ROL16m1 },
- { X86::ROL16rCL, X86::ROL16mCL },
- { X86::ROL16ri, X86::ROL16mi },
- { X86::ROL32r1, X86::ROL32m1 },
- { X86::ROL32rCL, X86::ROL32mCL },
- { X86::ROL32ri, X86::ROL32mi },
- { X86::ROL64r1, X86::ROL64m1 },
- { X86::ROL64rCL, X86::ROL64mCL },
- { X86::ROL64ri, X86::ROL64mi },
- { X86::ROL8r1, X86::ROL8m1 },
- { X86::ROL8rCL, X86::ROL8mCL },
- { X86::ROL8ri, X86::ROL8mi },
- { X86::ROR16r1, X86::ROR16m1 },
- { X86::ROR16rCL, X86::ROR16mCL },
- { X86::ROR16ri, X86::ROR16mi },
- { X86::ROR32r1, X86::ROR32m1 },
- { X86::ROR32rCL, X86::ROR32mCL },
- { X86::ROR32ri, X86::ROR32mi },
- { X86::ROR64r1, X86::ROR64m1 },
- { X86::ROR64rCL, X86::ROR64mCL },
- { X86::ROR64ri, X86::ROR64mi },
- { X86::ROR8r1, X86::ROR8m1 },
- { X86::ROR8rCL, X86::ROR8mCL },
- { X86::ROR8ri, X86::ROR8mi },
- { X86::SAR16r1, X86::SAR16m1 },
- { X86::SAR16rCL, X86::SAR16mCL },
- { X86::SAR16ri, X86::SAR16mi },
- { X86::SAR32r1, X86::SAR32m1 },
- { X86::SAR32rCL, X86::SAR32mCL },
- { X86::SAR32ri, X86::SAR32mi },
- { X86::SAR64r1, X86::SAR64m1 },
- { X86::SAR64rCL, X86::SAR64mCL },
- { X86::SAR64ri, X86::SAR64mi },
- { X86::SAR8r1, X86::SAR8m1 },
- { X86::SAR8rCL, X86::SAR8mCL },
- { X86::SAR8ri, X86::SAR8mi },
- { X86::SBB32ri, X86::SBB32mi },
- { X86::SBB32ri8, X86::SBB32mi8 },
- { X86::SBB32rr, X86::SBB32mr },
- { X86::SBB64ri32, X86::SBB64mi32 },
- { X86::SBB64ri8, X86::SBB64mi8 },
- { X86::SBB64rr, X86::SBB64mr },
- { X86::SHL16r1, X86::SHL16m1 },
- { X86::SHL16rCL, X86::SHL16mCL },
- { X86::SHL16ri, X86::SHL16mi },
- { X86::SHL32r1, X86::SHL32m1 },
- { X86::SHL32rCL, X86::SHL32mCL },
- { X86::SHL32ri, X86::SHL32mi },
- { X86::SHL64r1, X86::SHL64m1 },
- { X86::SHL64rCL, X86::SHL64mCL },
- { X86::SHL64ri, X86::SHL64mi },
- { X86::SHL8r1, X86::SHL8m1 },
- { X86::SHL8rCL, X86::SHL8mCL },
- { X86::SHL8ri, X86::SHL8mi },
- { X86::SHLD16rrCL, X86::SHLD16mrCL },
- { X86::SHLD16rri8, X86::SHLD16mri8 },
- { X86::SHLD32rrCL, X86::SHLD32mrCL },
- { X86::SHLD32rri8, X86::SHLD32mri8 },
- { X86::SHLD64rrCL, X86::SHLD64mrCL },
- { X86::SHLD64rri8, X86::SHLD64mri8 },
- { X86::SHR16r1, X86::SHR16m1 },
- { X86::SHR16rCL, X86::SHR16mCL },
- { X86::SHR16ri, X86::SHR16mi },
- { X86::SHR32r1, X86::SHR32m1 },
- { X86::SHR32rCL, X86::SHR32mCL },
- { X86::SHR32ri, X86::SHR32mi },
- { X86::SHR64r1, X86::SHR64m1 },
- { X86::SHR64rCL, X86::SHR64mCL },
- { X86::SHR64ri, X86::SHR64mi },
- { X86::SHR8r1, X86::SHR8m1 },
- { X86::SHR8rCL, X86::SHR8mCL },
- { X86::SHR8ri, X86::SHR8mi },
- { X86::SHRD16rrCL, X86::SHRD16mrCL },
- { X86::SHRD16rri8, X86::SHRD16mri8 },
- { X86::SHRD32rrCL, X86::SHRD32mrCL },
- { X86::SHRD32rri8, X86::SHRD32mri8 },
- { X86::SHRD64rrCL, X86::SHRD64mrCL },
- { X86::SHRD64rri8, X86::SHRD64mri8 },
- { X86::SUB16ri, X86::SUB16mi },
- { X86::SUB16ri8, X86::SUB16mi8 },
- { X86::SUB16rr, X86::SUB16mr },
- { X86::SUB32ri, X86::SUB32mi },
- { X86::SUB32ri8, X86::SUB32mi8 },
- { X86::SUB32rr, X86::SUB32mr },
- { X86::SUB64ri32, X86::SUB64mi32 },
- { X86::SUB64ri8, X86::SUB64mi8 },
- { X86::SUB64rr, X86::SUB64mr },
- { X86::SUB8ri, X86::SUB8mi },
- { X86::SUB8rr, X86::SUB8mr },
- { X86::XOR16ri, X86::XOR16mi },
- { X86::XOR16ri8, X86::XOR16mi8 },
- { X86::XOR16rr, X86::XOR16mr },
- { X86::XOR32ri, X86::XOR32mi },
- { X86::XOR32ri8, X86::XOR32mi8 },
- { X86::XOR32rr, X86::XOR32mr },
- { X86::XOR64ri32, X86::XOR64mi32 },
- { X86::XOR64ri8, X86::XOR64mi8 },
- { X86::XOR64rr, X86::XOR64mr },
- { X86::XOR8ri, X86::XOR8mi },
- { X86::XOR8rr, X86::XOR8mr }
- };
-
- for (unsigned i = 0, e = array_lengthof(OpTbl2Addr); i != e; ++i) {
- unsigned RegOp = OpTbl2Addr[i][0];
- unsigned MemOp = OpTbl2Addr[i][1];
- if (!RegOp2MemOpTable2Addr.insert(std::make_pair((unsigned*)RegOp, MemOp)))
- assert(false && "Duplicated entries?");
- unsigned AuxInfo = 0 | (1 << 4) | (1 << 5); // Index 0,folded load and store
- if (!MemOp2RegOpTable.insert(std::make_pair((unsigned*)MemOp,
- std::make_pair(RegOp, AuxInfo))))
- AmbEntries.push_back(MemOp);
- }
-
- // If the third value is 1, then it's folding either a load or a store.
- static const unsigned OpTbl0[][3] = {
- { X86::CALL32r, X86::CALL32m, 1 },
- { X86::CALL64r, X86::CALL64m, 1 },
- { X86::CMP16ri, X86::CMP16mi, 1 },
- { X86::CMP16ri8, X86::CMP16mi8, 1 },
- { X86::CMP32ri, X86::CMP32mi, 1 },
- { X86::CMP32ri8, X86::CMP32mi8, 1 },
- { X86::CMP64ri32, X86::CMP64mi32, 1 },
- { X86::CMP64ri8, X86::CMP64mi8, 1 },
- { X86::CMP8ri, X86::CMP8mi, 1 },
- { X86::DIV16r, X86::DIV16m, 1 },
- { X86::DIV32r, X86::DIV32m, 1 },
- { X86::DIV64r, X86::DIV64m, 1 },
- { X86::DIV8r, X86::DIV8m, 1 },
- { X86::FsMOVAPDrr, X86::MOVSDmr, 0 },
- { X86::FsMOVAPSrr, X86::MOVSSmr, 0 },
- { X86::IDIV16r, X86::IDIV16m, 1 },
- { X86::IDIV32r, X86::IDIV32m, 1 },
- { X86::IDIV64r, X86::IDIV64m, 1 },
- { X86::IDIV8r, X86::IDIV8m, 1 },
- { X86::IMUL16r, X86::IMUL16m, 1 },
- { X86::IMUL32r, X86::IMUL32m, 1 },
- { X86::IMUL64r, X86::IMUL64m, 1 },
- { X86::IMUL8r, X86::IMUL8m, 1 },
- { X86::JMP32r, X86::JMP32m, 1 },
- { X86::JMP64r, X86::JMP64m, 1 },
- { X86::MOV16ri, X86::MOV16mi, 0 },
- { X86::MOV16rr, X86::MOV16mr, 0 },
- { X86::MOV16to16_, X86::MOV16_mr, 0 },
- { X86::MOV32ri, X86::MOV32mi, 0 },
- { X86::MOV32rr, X86::MOV32mr, 0 },
- { X86::MOV32to32_, X86::MOV32_mr, 0 },
- { X86::MOV64ri32, X86::MOV64mi32, 0 },
- { X86::MOV64rr, X86::MOV64mr, 0 },
- { X86::MOV8ri, X86::MOV8mi, 0 },
- { X86::MOV8rr, X86::MOV8mr, 0 },
- { X86::MOVAPDrr, X86::MOVAPDmr, 0 },
- { X86::MOVAPSrr, X86::MOVAPSmr, 0 },
- { X86::MOVPDI2DIrr, X86::MOVPDI2DImr, 0 },
- { X86::MOVPQIto64rr,X86::MOVPQIto64mr, 0 },
- { X86::MOVPS2SSrr, X86::MOVPS2SSmr, 0 },
- { X86::MOVSDrr, X86::MOVSDmr, 0 },
- { X86::MOVSDto64rr, X86::MOVSDto64mr, 0 },
- { X86::MOVSS2DIrr, X86::MOVSS2DImr, 0 },
- { X86::MOVSSrr, X86::MOVSSmr, 0 },
- { X86::MOVUPDrr, X86::MOVUPDmr, 0 },
- { X86::MOVUPSrr, X86::MOVUPSmr, 0 },
- { X86::MUL16r, X86::MUL16m, 1 },
- { X86::MUL32r, X86::MUL32m, 1 },
- { X86::MUL64r, X86::MUL64m, 1 },
- { X86::MUL8r, X86::MUL8m, 1 },
- { X86::SETAEr, X86::SETAEm, 0 },
- { X86::SETAr, X86::SETAm, 0 },
- { X86::SETBEr, X86::SETBEm, 0 },
- { X86::SETBr, X86::SETBm, 0 },
- { X86::SETEr, X86::SETEm, 0 },
- { X86::SETGEr, X86::SETGEm, 0 },
- { X86::SETGr, X86::SETGm, 0 },
- { X86::SETLEr, X86::SETLEm, 0 },
- { X86::SETLr, X86::SETLm, 0 },
- { X86::SETNEr, X86::SETNEm, 0 },
- { X86::SETNPr, X86::SETNPm, 0 },
- { X86::SETNSr, X86::SETNSm, 0 },
- { X86::SETPr, X86::SETPm, 0 },
- { X86::SETSr, X86::SETSm, 0 },
- { X86::TAILJMPr, X86::TAILJMPm, 1 },
- { X86::TEST16ri, X86::TEST16mi, 1 },
- { X86::TEST32ri, X86::TEST32mi, 1 },
- { X86::TEST64ri32, X86::TEST64mi32, 1 },
- { X86::TEST8ri, X86::TEST8mi, 1 },
- { X86::XCHG16rr, X86::XCHG16mr, 0 },
- { X86::XCHG32rr, X86::XCHG32mr, 0 },
- { X86::XCHG64rr, X86::XCHG64mr, 0 },
- { X86::XCHG8rr, X86::XCHG8mr, 0 }
- };
-
- for (unsigned i = 0, e = array_lengthof(OpTbl0); i != e; ++i) {
- unsigned RegOp = OpTbl0[i][0];
- unsigned MemOp = OpTbl0[i][1];
- if (!RegOp2MemOpTable0.insert(std::make_pair((unsigned*)RegOp, MemOp)))
- assert(false && "Duplicated entries?");
- unsigned FoldedLoad = OpTbl0[i][2];
- // Index 0, folded load or store.
- unsigned AuxInfo = 0 | (FoldedLoad << 4) | ((FoldedLoad^1) << 5);
- if (RegOp != X86::FsMOVAPDrr && RegOp != X86::FsMOVAPSrr)
- if (!MemOp2RegOpTable.insert(std::make_pair((unsigned*)MemOp,
- std::make_pair(RegOp, AuxInfo))))
- AmbEntries.push_back(MemOp);
- }
-
- static const unsigned OpTbl1[][2] = {
- { X86::CMP16rr, X86::CMP16rm },
- { X86::CMP32rr, X86::CMP32rm },
- { X86::CMP64rr, X86::CMP64rm },
- { X86::CMP8rr, X86::CMP8rm },
- { X86::CVTSD2SSrr, X86::CVTSD2SSrm },
- { X86::CVTSI2SD64rr, X86::CVTSI2SD64rm },
- { X86::CVTSI2SDrr, X86::CVTSI2SDrm },
- { X86::CVTSI2SS64rr, X86::CVTSI2SS64rm },
- { X86::CVTSI2SSrr, X86::CVTSI2SSrm },
- { X86::CVTSS2SDrr, X86::CVTSS2SDrm },
- { X86::CVTTSD2SI64rr, X86::CVTTSD2SI64rm },
- { X86::CVTTSD2SIrr, X86::CVTTSD2SIrm },
- { X86::CVTTSS2SI64rr, X86::CVTTSS2SI64rm },
- { X86::CVTTSS2SIrr, X86::CVTTSS2SIrm },
- { X86::FsMOVAPDrr, X86::MOVSDrm },
- { X86::FsMOVAPSrr, X86::MOVSSrm },
- { X86::IMUL16rri, X86::IMUL16rmi },
- { X86::IMUL16rri8, X86::IMUL16rmi8 },
- { X86::IMUL32rri, X86::IMUL32rmi },
- { X86::IMUL32rri8, X86::IMUL32rmi8 },
- { X86::IMUL64rri32, X86::IMUL64rmi32 },
- { X86::IMUL64rri8, X86::IMUL64rmi8 },
- { X86::Int_CMPSDrr, X86::Int_CMPSDrm },
- { X86::Int_CMPSSrr, X86::Int_CMPSSrm },
- { X86::Int_COMISDrr, X86::Int_COMISDrm },
- { X86::Int_COMISSrr, X86::Int_COMISSrm },
- { X86::Int_CVTDQ2PDrr, X86::Int_CVTDQ2PDrm },
- { X86::Int_CVTDQ2PSrr, X86::Int_CVTDQ2PSrm },
- { X86::Int_CVTPD2DQrr, X86::Int_CVTPD2DQrm },
- { X86::Int_CVTPD2PSrr, X86::Int_CVTPD2PSrm },
- { X86::Int_CVTPS2DQrr, X86::Int_CVTPS2DQrm },
- { X86::Int_CVTPS2PDrr, X86::Int_CVTPS2PDrm },
- { X86::Int_CVTSD2SI64rr,X86::Int_CVTSD2SI64rm },
- { X86::Int_CVTSD2SIrr, X86::Int_CVTSD2SIrm },
- { X86::Int_CVTSD2SSrr, X86::Int_CVTSD2SSrm },
- { X86::Int_CVTSI2SD64rr,X86::Int_CVTSI2SD64rm },
- { X86::Int_CVTSI2SDrr, X86::Int_CVTSI2SDrm },
- { X86::Int_CVTSI2SS64rr,X86::Int_CVTSI2SS64rm },
- { X86::Int_CVTSI2SSrr, X86::Int_CVTSI2SSrm },
- { X86::Int_CVTSS2SDrr, X86::Int_CVTSS2SDrm },
- { X86::Int_CVTSS2SI64rr,X86::Int_CVTSS2SI64rm },
- { X86::Int_CVTSS2SIrr, X86::Int_CVTSS2SIrm },
- { X86::Int_CVTTPD2DQrr, X86::Int_CVTTPD2DQrm },
- { X86::Int_CVTTPS2DQrr, X86::Int_CVTTPS2DQrm },
- { X86::Int_CVTTSD2SI64rr,X86::Int_CVTTSD2SI64rm },
- { X86::Int_CVTTSD2SIrr, X86::Int_CVTTSD2SIrm },
- { X86::Int_CVTTSS2SI64rr,X86::Int_CVTTSS2SI64rm },
- { X86::Int_CVTTSS2SIrr, X86::Int_CVTTSS2SIrm },
- { X86::Int_UCOMISDrr, X86::Int_UCOMISDrm },
- { X86::Int_UCOMISSrr, X86::Int_UCOMISSrm },
- { X86::MOV16rr, X86::MOV16rm },
- { X86::MOV16to16_, X86::MOV16_rm },
- { X86::MOV32rr, X86::MOV32rm },
- { X86::MOV32to32_, X86::MOV32_rm },
- { X86::MOV64rr, X86::MOV64rm },
- { X86::MOV64toPQIrr, X86::MOV64toPQIrm },
- { X86::MOV64toSDrr, X86::MOV64toSDrm },
- { X86::MOV8rr, X86::MOV8rm },
- { X86::MOVAPDrr, X86::MOVAPDrm },
- { X86::MOVAPSrr, X86::MOVAPSrm },
- { X86::MOVDDUPrr, X86::MOVDDUPrm },
- { X86::MOVDI2PDIrr, X86::MOVDI2PDIrm },
- { X86::MOVDI2SSrr, X86::MOVDI2SSrm },
- { X86::MOVSD2PDrr, X86::MOVSD2PDrm },
- { X86::MOVSDrr, X86::MOVSDrm },
- { X86::MOVSHDUPrr, X86::MOVSHDUPrm },
- { X86::MOVSLDUPrr, X86::MOVSLDUPrm },
- { X86::MOVSS2PSrr, X86::MOVSS2PSrm },
- { X86::MOVSSrr, X86::MOVSSrm },
- { X86::MOVSX16rr8, X86::MOVSX16rm8 },
- { X86::MOVSX32rr16, X86::MOVSX32rm16 },
- { X86::MOVSX32rr8, X86::MOVSX32rm8 },
- { X86::MOVSX64rr16, X86::MOVSX64rm16 },
- { X86::MOVSX64rr32, X86::MOVSX64rm32 },
- { X86::MOVSX64rr8, X86::MOVSX64rm8 },
- { X86::MOVUPDrr, X86::MOVUPDrm },
- { X86::MOVUPSrr, X86::MOVUPSrm },
- { X86::MOVZX16rr8, X86::MOVZX16rm8 },
- { X86::MOVZX32rr16, X86::MOVZX32rm16 },
- { X86::MOVZX32rr8, X86::MOVZX32rm8 },
- { X86::MOVZX64rr16, X86::MOVZX64rm16 },
- { X86::MOVZX64rr8, X86::MOVZX64rm8 },
- { X86::PSHUFDri, X86::PSHUFDmi },
- { X86::PSHUFHWri, X86::PSHUFHWmi },
- { X86::PSHUFLWri, X86::PSHUFLWmi },
- { X86::PsMOVZX64rr32, X86::PsMOVZX64rm32 },
- { X86::RCPPSr, X86::RCPPSm },
- { X86::RCPPSr_Int, X86::RCPPSm_Int },
- { X86::RSQRTPSr, X86::RSQRTPSm },
- { X86::RSQRTPSr_Int, X86::RSQRTPSm_Int },
- { X86::RSQRTSSr, X86::RSQRTSSm },
- { X86::RSQRTSSr_Int, X86::RSQRTSSm_Int },
- { X86::SQRTPDr, X86::SQRTPDm },
- { X86::SQRTPDr_Int, X86::SQRTPDm_Int },
- { X86::SQRTPSr, X86::SQRTPSm },
- { X86::SQRTPSr_Int, X86::SQRTPSm_Int },
- { X86::SQRTSDr, X86::SQRTSDm },
- { X86::SQRTSDr_Int, X86::SQRTSDm_Int },
- { X86::SQRTSSr, X86::SQRTSSm },
- { X86::SQRTSSr_Int, X86::SQRTSSm_Int },
- { X86::TEST16rr, X86::TEST16rm },
- { X86::TEST32rr, X86::TEST32rm },
- { X86::TEST64rr, X86::TEST64rm },
- { X86::TEST8rr, X86::TEST8rm },
- // FIXME: TEST*rr EAX,EAX ---> CMP [mem], 0
- { X86::UCOMISDrr, X86::UCOMISDrm },
- { X86::UCOMISSrr, X86::UCOMISSrm },
- { X86::XCHG16rr, X86::XCHG16rm },
- { X86::XCHG32rr, X86::XCHG32rm },
- { X86::XCHG64rr, X86::XCHG64rm },
- { X86::XCHG8rr, X86::XCHG8rm }
- };
-
- for (unsigned i = 0, e = array_lengthof(OpTbl1); i != e; ++i) {
- unsigned RegOp = OpTbl1[i][0];
- unsigned MemOp = OpTbl1[i][1];
- if (!RegOp2MemOpTable1.insert(std::make_pair((unsigned*)RegOp, MemOp)))
- assert(false && "Duplicated entries?");
- unsigned AuxInfo = 1 | (1 << 4); // Index 1, folded load
- if (RegOp != X86::FsMOVAPDrr && RegOp != X86::FsMOVAPSrr)
- if (!MemOp2RegOpTable.insert(std::make_pair((unsigned*)MemOp,
- std::make_pair(RegOp, AuxInfo))))
- AmbEntries.push_back(MemOp);
- }
-
- static const unsigned OpTbl2[][2] = {
- { X86::ADC32rr, X86::ADC32rm },
- { X86::ADC64rr, X86::ADC64rm },
- { X86::ADD16rr, X86::ADD16rm },
- { X86::ADD32rr, X86::ADD32rm },
- { X86::ADD64rr, X86::ADD64rm },
- { X86::ADD8rr, X86::ADD8rm },
- { X86::ADDPDrr, X86::ADDPDrm },
- { X86::ADDPSrr, X86::ADDPSrm },
- { X86::ADDSDrr, X86::ADDSDrm },
- { X86::ADDSSrr, X86::ADDSSrm },
- { X86::ADDSUBPDrr, X86::ADDSUBPDrm },
- { X86::ADDSUBPSrr, X86::ADDSUBPSrm },
- { X86::AND16rr, X86::AND16rm },
- { X86::AND32rr, X86::AND32rm },
- { X86::AND64rr, X86::AND64rm },
- { X86::AND8rr, X86::AND8rm },
- { X86::ANDNPDrr, X86::ANDNPDrm },
- { X86::ANDNPSrr, X86::ANDNPSrm },
- { X86::ANDPDrr, X86::ANDPDrm },
- { X86::ANDPSrr, X86::ANDPSrm },
- { X86::CMOVA16rr, X86::CMOVA16rm },
- { X86::CMOVA32rr, X86::CMOVA32rm },
- { X86::CMOVA64rr, X86::CMOVA64rm },
- { X86::CMOVAE16rr, X86::CMOVAE16rm },
- { X86::CMOVAE32rr, X86::CMOVAE32rm },
- { X86::CMOVAE64rr, X86::CMOVAE64rm },
- { X86::CMOVB16rr, X86::CMOVB16rm },
- { X86::CMOVB32rr, X86::CMOVB32rm },
- { X86::CMOVB64rr, X86::CMOVB64rm },
- { X86::CMOVBE16rr, X86::CMOVBE16rm },
- { X86::CMOVBE32rr, X86::CMOVBE32rm },
- { X86::CMOVBE64rr, X86::CMOVBE64rm },
- { X86::CMOVE16rr, X86::CMOVE16rm },
- { X86::CMOVE32rr, X86::CMOVE32rm },
- { X86::CMOVE64rr, X86::CMOVE64rm },
- { X86::CMOVG16rr, X86::CMOVG16rm },
- { X86::CMOVG32rr, X86::CMOVG32rm },
- { X86::CMOVG64rr, X86::CMOVG64rm },
- { X86::CMOVGE16rr, X86::CMOVGE16rm },
- { X86::CMOVGE32rr, X86::CMOVGE32rm },
- { X86::CMOVGE64rr, X86::CMOVGE64rm },
- { X86::CMOVL16rr, X86::CMOVL16rm },
- { X86::CMOVL32rr, X86::CMOVL32rm },
- { X86::CMOVL64rr, X86::CMOVL64rm },
- { X86::CMOVLE16rr, X86::CMOVLE16rm },
- { X86::CMOVLE32rr, X86::CMOVLE32rm },
- { X86::CMOVLE64rr, X86::CMOVLE64rm },
- { X86::CMOVNE16rr, X86::CMOVNE16rm },
- { X86::CMOVNE32rr, X86::CMOVNE32rm },
- { X86::CMOVNE64rr, X86::CMOVNE64rm },
- { X86::CMOVNP16rr, X86::CMOVNP16rm },
- { X86::CMOVNP32rr, X86::CMOVNP32rm },
- { X86::CMOVNP64rr, X86::CMOVNP64rm },
- { X86::CMOVNS16rr, X86::CMOVNS16rm },
- { X86::CMOVNS32rr, X86::CMOVNS32rm },
- { X86::CMOVNS64rr, X86::CMOVNS64rm },
- { X86::CMOVP16rr, X86::CMOVP16rm },
- { X86::CMOVP32rr, X86::CMOVP32rm },
- { X86::CMOVP64rr, X86::CMOVP64rm },
- { X86::CMOVS16rr, X86::CMOVS16rm },
- { X86::CMOVS32rr, X86::CMOVS32rm },
- { X86::CMOVS64rr, X86::CMOVS64rm },
- { X86::CMPPDrri, X86::CMPPDrmi },
- { X86::CMPPSrri, X86::CMPPSrmi },
- { X86::CMPSDrr, X86::CMPSDrm },
- { X86::CMPSSrr, X86::CMPSSrm },
- { X86::DIVPDrr, X86::DIVPDrm },
- { X86::DIVPSrr, X86::DIVPSrm },
- { X86::DIVSDrr, X86::DIVSDrm },
- { X86::DIVSSrr, X86::DIVSSrm },
- { X86::HADDPDrr, X86::HADDPDrm },
- { X86::HADDPSrr, X86::HADDPSrm },
- { X86::HSUBPDrr, X86::HSUBPDrm },
- { X86::HSUBPSrr, X86::HSUBPSrm },
- { X86::IMUL16rr, X86::IMUL16rm },
- { X86::IMUL32rr, X86::IMUL32rm },
- { X86::IMUL64rr, X86::IMUL64rm },
- { X86::MAXPDrr, X86::MAXPDrm },
- { X86::MAXPDrr_Int, X86::MAXPDrm_Int },
- { X86::MAXPSrr, X86::MAXPSrm },
- { X86::MAXPSrr_Int, X86::MAXPSrm_Int },
- { X86::MAXSDrr, X86::MAXSDrm },
- { X86::MAXSDrr_Int, X86::MAXSDrm_Int },
- { X86::MAXSSrr, X86::MAXSSrm },
- { X86::MAXSSrr_Int, X86::MAXSSrm_Int },
- { X86::MINPDrr, X86::MINPDrm },
- { X86::MINPDrr_Int, X86::MINPDrm_Int },
- { X86::MINPSrr, X86::MINPSrm },
- { X86::MINPSrr_Int, X86::MINPSrm_Int },
- { X86::MINSDrr, X86::MINSDrm },
- { X86::MINSDrr_Int, X86::MINSDrm_Int },
- { X86::MINSSrr, X86::MINSSrm },
- { X86::MINSSrr_Int, X86::MINSSrm_Int },
- { X86::MULPDrr, X86::MULPDrm },
- { X86::MULPSrr, X86::MULPSrm },
- { X86::MULSDrr, X86::MULSDrm },
- { X86::MULSSrr, X86::MULSSrm },
- { X86::OR16rr, X86::OR16rm },
- { X86::OR32rr, X86::OR32rm },
- { X86::OR64rr, X86::OR64rm },
- { X86::OR8rr, X86::OR8rm },
- { X86::ORPDrr, X86::ORPDrm },
- { X86::ORPSrr, X86::ORPSrm },
- { X86::PACKSSDWrr, X86::PACKSSDWrm },
- { X86::PACKSSWBrr, X86::PACKSSWBrm },
- { X86::PACKUSWBrr, X86::PACKUSWBrm },
- { X86::PADDBrr, X86::PADDBrm },
- { X86::PADDDrr, X86::PADDDrm },
- { X86::PADDQrr, X86::PADDQrm },
- { X86::PADDSBrr, X86::PADDSBrm },
- { X86::PADDSWrr, X86::PADDSWrm },
- { X86::PADDWrr, X86::PADDWrm },
- { X86::PANDNrr, X86::PANDNrm },
- { X86::PANDrr, X86::PANDrm },
- { X86::PAVGBrr, X86::PAVGBrm },
- { X86::PAVGWrr, X86::PAVGWrm },
- { X86::PCMPEQBrr, X86::PCMPEQBrm },
- { X86::PCMPEQDrr, X86::PCMPEQDrm },
- { X86::PCMPEQWrr, X86::PCMPEQWrm },
- { X86::PCMPGTBrr, X86::PCMPGTBrm },
- { X86::PCMPGTDrr, X86::PCMPGTDrm },
- { X86::PCMPGTWrr, X86::PCMPGTWrm },
- { X86::PINSRWrri, X86::PINSRWrmi },
- { X86::PMADDWDrr, X86::PMADDWDrm },
- { X86::PMAXSWrr, X86::PMAXSWrm },
- { X86::PMAXUBrr, X86::PMAXUBrm },
- { X86::PMINSWrr, X86::PMINSWrm },
- { X86::PMINUBrr, X86::PMINUBrm },
- { X86::PMULHUWrr, X86::PMULHUWrm },
- { X86::PMULHWrr, X86::PMULHWrm },
- { X86::PMULLWrr, X86::PMULLWrm },
- { X86::PMULUDQrr, X86::PMULUDQrm },
- { X86::PORrr, X86::PORrm },
- { X86::PSADBWrr, X86::PSADBWrm },
- { X86::PSLLDrr, X86::PSLLDrm },
- { X86::PSLLQrr, X86::PSLLQrm },
- { X86::PSLLWrr, X86::PSLLWrm },
- { X86::PSRADrr, X86::PSRADrm },
- { X86::PSRAWrr, X86::PSRAWrm },
- { X86::PSRLDrr, X86::PSRLDrm },
- { X86::PSRLQrr, X86::PSRLQrm },
- { X86::PSRLWrr, X86::PSRLWrm },
- { X86::PSUBBrr, X86::PSUBBrm },
- { X86::PSUBDrr, X86::PSUBDrm },
- { X86::PSUBSBrr, X86::PSUBSBrm },
- { X86::PSUBSWrr, X86::PSUBSWrm },
- { X86::PSUBWrr, X86::PSUBWrm },
- { X86::PUNPCKHBWrr, X86::PUNPCKHBWrm },
- { X86::PUNPCKHDQrr, X86::PUNPCKHDQrm },
- { X86::PUNPCKHQDQrr, X86::PUNPCKHQDQrm },
- { X86::PUNPCKHWDrr, X86::PUNPCKHWDrm },
- { X86::PUNPCKLBWrr, X86::PUNPCKLBWrm },
- { X86::PUNPCKLDQrr, X86::PUNPCKLDQrm },
- { X86::PUNPCKLQDQrr, X86::PUNPCKLQDQrm },
- { X86::PUNPCKLWDrr, X86::PUNPCKLWDrm },
- { X86::PXORrr, X86::PXORrm },
- { X86::SBB32rr, X86::SBB32rm },
- { X86::SBB64rr, X86::SBB64rm },
- { X86::SHUFPDrri, X86::SHUFPDrmi },
- { X86::SHUFPSrri, X86::SHUFPSrmi },
- { X86::SUB16rr, X86::SUB16rm },
- { X86::SUB32rr, X86::SUB32rm },
- { X86::SUB64rr, X86::SUB64rm },
- { X86::SUB8rr, X86::SUB8rm },
- { X86::SUBPDrr, X86::SUBPDrm },
- { X86::SUBPSrr, X86::SUBPSrm },
- { X86::SUBSDrr, X86::SUBSDrm },
- { X86::SUBSSrr, X86::SUBSSrm },
- // FIXME: TEST*rr -> swapped operand of TEST*mr.
- { X86::UNPCKHPDrr, X86::UNPCKHPDrm },
- { X86::UNPCKHPSrr, X86::UNPCKHPSrm },
- { X86::UNPCKLPDrr, X86::UNPCKLPDrm },
- { X86::UNPCKLPSrr, X86::UNPCKLPSrm },
- { X86::XOR16rr, X86::XOR16rm },
- { X86::XOR32rr, X86::XOR32rm },
- { X86::XOR64rr, X86::XOR64rm },
- { X86::XOR8rr, X86::XOR8rm },
- { X86::XORPDrr, X86::XORPDrm },
- { X86::XORPSrr, X86::XORPSrm }
- };
-
- for (unsigned i = 0, e = array_lengthof(OpTbl2); i != e; ++i) {
- unsigned RegOp = OpTbl2[i][0];
- unsigned MemOp = OpTbl2[i][1];
- if (!RegOp2MemOpTable2.insert(std::make_pair((unsigned*)RegOp, MemOp)))
- assert(false && "Duplicated entries?");
- unsigned AuxInfo = 2 | (1 << 4); // Index 1, folded load
- if (!MemOp2RegOpTable.insert(std::make_pair((unsigned*)MemOp,
- std::make_pair(RegOp, AuxInfo))))
- AmbEntries.push_back(MemOp);
- }
-
- // Remove ambiguous entries.
- assert(AmbEntries.empty() && "Duplicated entries in unfolding maps?");
}
// getDwarfRegNum - This function maps LLVM register identifiers to the
unsigned Flavour = DWARFFlavour::X86_64;
if (!Subtarget->is64Bit()) {
if (Subtarget->isTargetDarwin()) {
- Flavour = DWARFFlavour::X86_32_Darwin;
+ if (isEH)
+ Flavour = DWARFFlavour::X86_32_DarwinEH;
+ else
+ Flavour = DWARFFlavour::X86_32_Generic;
} else if (Subtarget->isTargetCygMing()) {
// Unsupported by now, just quick fallback
- Flavour = DWARFFlavour::X86_32_ELF;
+ Flavour = DWARFFlavour::X86_32_Generic;
} else {
- Flavour = DWARFFlavour::X86_32_ELF;
+ Flavour = DWARFFlavour::X86_32_Generic;
}
}
case X86::ST4: case X86::ST5: case X86::ST6: case X86::ST7:
return RegNo-X86::ST0;
- case X86::XMM0: case X86::XMM8:
+ case X86::XMM0: case X86::XMM8: case X86::MM0:
return 0;
- case X86::XMM1: case X86::XMM9:
+ case X86::XMM1: case X86::XMM9: case X86::MM1:
return 1;
- case X86::XMM2: case X86::XMM10:
+ case X86::XMM2: case X86::XMM10: case X86::MM2:
return 2;
- case X86::XMM3: case X86::XMM11:
+ case X86::XMM3: case X86::XMM11: case X86::MM3:
return 3;
- case X86::XMM4: case X86::XMM12:
+ case X86::XMM4: case X86::XMM12: case X86::MM4:
return 4;
- case X86::XMM5: case X86::XMM13:
+ case X86::XMM5: case X86::XMM13: case X86::MM5:
return 5;
- case X86::XMM6: case X86::XMM14:
+ case X86::XMM6: case X86::XMM14: case X86::MM6:
return 6;
- case X86::XMM7: case X86::XMM15:
+ case X86::XMM7: case X86::XMM15: case X86::MM7:
return 7;
default:
}
}
-bool X86RegisterInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI) const {
- if (CSI.empty())
- return false;
-
- MachineFunction &MF = *MBB.getParent();
- X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
- X86FI->setCalleeSavedFrameSize(CSI.size() * SlotSize);
- unsigned Opc = Is64Bit ? X86::PUSH64r : X86::PUSH32r;
- for (unsigned i = CSI.size(); i != 0; --i) {
- unsigned Reg = CSI[i-1].getReg();
- // Add the callee-saved register as live-in. It's killed at the spill.
- MBB.addLiveIn(Reg);
- BuildMI(MBB, MI, TII.get(Opc)).addReg(Reg);
- }
- return true;
-}
-
-bool X86RegisterInfo::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI) const {
- if (CSI.empty())
- return false;
-
- unsigned Opc = Is64Bit ? X86::POP64r : X86::POP32r;
- for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
- unsigned Reg = CSI[i].getReg();
- BuildMI(MBB, MI, TII.get(Opc), Reg);
- }
- return true;
-}
-
-static const MachineInstrBuilder &X86InstrAddOperand(MachineInstrBuilder &MIB,
- MachineOperand &MO) {
- if (MO.isRegister())
- MIB = MIB.addReg(MO.getReg(), MO.isDef(), MO.isImplicit(),
- false, false, MO.getSubReg());
- else if (MO.isImmediate())
- MIB = MIB.addImm(MO.getImm());
- else if (MO.isFrameIndex())
- MIB = MIB.addFrameIndex(MO.getFrameIndex());
- else if (MO.isGlobalAddress())
- MIB = MIB.addGlobalAddress(MO.getGlobal(), MO.getOffset());
- else if (MO.isConstantPoolIndex())
- MIB = MIB.addConstantPoolIndex(MO.getConstantPoolIndex(), MO.getOffset());
- else if (MO.isJumpTableIndex())
- MIB = MIB.addJumpTableIndex(MO.getJumpTableIndex());
- else if (MO.isExternalSymbol())
- MIB = MIB.addExternalSymbol(MO.getSymbolName());
- else
- assert(0 && "Unknown operand for X86InstrAddOperand!");
-
- return MIB;
-}
-
-static unsigned getStoreRegOpcode(const TargetRegisterClass *RC,
- unsigned StackAlign) {
- unsigned Opc = 0;
- if (RC == &X86::GR64RegClass) {
- Opc = X86::MOV64mr;
- } else if (RC == &X86::GR32RegClass) {
- Opc = X86::MOV32mr;
- } else if (RC == &X86::GR16RegClass) {
- Opc = X86::MOV16mr;
- } else if (RC == &X86::GR8RegClass) {
- Opc = X86::MOV8mr;
- } else if (RC == &X86::GR32_RegClass) {
- Opc = X86::MOV32_mr;
- } else if (RC == &X86::GR16_RegClass) {
- Opc = X86::MOV16_mr;
- } else if (RC == &X86::RFP80RegClass) {
- Opc = X86::ST_FpP80m; // pops
- } else if (RC == &X86::RFP64RegClass) {
- Opc = X86::ST_Fp64m;
- } else if (RC == &X86::RFP32RegClass) {
- Opc = X86::ST_Fp32m;
- } else if (RC == &X86::FR32RegClass) {
- Opc = X86::MOVSSmr;
- } else if (RC == &X86::FR64RegClass) {
- Opc = X86::MOVSDmr;
- } else if (RC == &X86::VR128RegClass) {
- // FIXME: Use movaps once we are capable of selectively
- // aligning functions that spill SSE registers on 16-byte boundaries.
- Opc = StackAlign >= 16 ? X86::MOVAPSmr : X86::MOVUPSmr;
- } else if (RC == &X86::VR64RegClass) {
- Opc = X86::MMX_MOVQ64mr;
- } else {
- assert(0 && "Unknown regclass");
- abort();
- }
-
- return Opc;
-}
-
-void X86RegisterInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- unsigned SrcReg, int FrameIdx,
- const TargetRegisterClass *RC) const {
- unsigned Opc = getStoreRegOpcode(RC, StackAlign);
- addFrameReference(BuildMI(MBB, MI, TII.get(Opc)), FrameIdx)
- .addReg(SrcReg, false, false, true);
-}
-
-void X86RegisterInfo::storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
- SmallVectorImpl<MachineOperand> &Addr,
- const TargetRegisterClass *RC,
- SmallVectorImpl<MachineInstr*> &NewMIs) const {
- unsigned Opc = getStoreRegOpcode(RC, StackAlign);
- MachineInstrBuilder MIB = BuildMI(TII.get(Opc));
- for (unsigned i = 0, e = Addr.size(); i != e; ++i)
- MIB = X86InstrAddOperand(MIB, Addr[i]);
- MIB.addReg(SrcReg, false, false, true);
- NewMIs.push_back(MIB);
-}
-
-static unsigned getLoadRegOpcode(const TargetRegisterClass *RC,
- unsigned StackAlign) {
- unsigned Opc = 0;
- if (RC == &X86::GR64RegClass) {
- Opc = X86::MOV64rm;
- } else if (RC == &X86::GR32RegClass) {
- Opc = X86::MOV32rm;
- } else if (RC == &X86::GR16RegClass) {
- Opc = X86::MOV16rm;
- } else if (RC == &X86::GR8RegClass) {
- Opc = X86::MOV8rm;
- } else if (RC == &X86::GR32_RegClass) {
- Opc = X86::MOV32_rm;
- } else if (RC == &X86::GR16_RegClass) {
- Opc = X86::MOV16_rm;
- } else if (RC == &X86::RFP80RegClass) {
- Opc = X86::LD_Fp80m;
- } else if (RC == &X86::RFP64RegClass) {
- Opc = X86::LD_Fp64m;
- } else if (RC == &X86::RFP32RegClass) {
- Opc = X86::LD_Fp32m;
- } else if (RC == &X86::FR32RegClass) {
- Opc = X86::MOVSSrm;
- } else if (RC == &X86::FR64RegClass) {
- Opc = X86::MOVSDrm;
- } else if (RC == &X86::VR128RegClass) {
- // FIXME: Use movaps once we are capable of selectively
- // aligning functions that spill SSE registers on 16-byte boundaries.
- Opc = StackAlign >= 16 ? X86::MOVAPSrm : X86::MOVUPSrm;
- } else if (RC == &X86::VR64RegClass) {
- Opc = X86::MMX_MOVQ64rm;
- } else {
- assert(0 && "Unknown regclass");
- abort();
- }
-
- return Opc;
-}
-
-void X86RegisterInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- unsigned DestReg, int FrameIdx,
- const TargetRegisterClass *RC) const{
- unsigned Opc = getLoadRegOpcode(RC, StackAlign);
- addFrameReference(BuildMI(MBB, MI, TII.get(Opc), DestReg), FrameIdx);
-}
-
-void X86RegisterInfo::loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
- SmallVectorImpl<MachineOperand> &Addr,
- const TargetRegisterClass *RC,
- SmallVectorImpl<MachineInstr*> &NewMIs) const {
- unsigned Opc = getLoadRegOpcode(RC, StackAlign);
- MachineInstrBuilder MIB = BuildMI(TII.get(Opc), DestReg);
- for (unsigned i = 0, e = Addr.size(); i != e; ++i)
- MIB = X86InstrAddOperand(MIB, Addr[i]);
- NewMIs.push_back(MIB);
-}
-
-void X86RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *DestRC,
- const TargetRegisterClass *SrcRC) const {
- if (DestRC != SrcRC) {
- // Moving EFLAGS to / from another register requires a push and a pop.
- if (SrcRC == &X86::CCRRegClass) {
- assert(SrcReg == X86::EFLAGS);
- if (DestRC == &X86::GR64RegClass) {
- BuildMI(MBB, MI, TII.get(X86::PUSHFQ));
- BuildMI(MBB, MI, TII.get(X86::POP64r), DestReg);
- return;
- } else if (DestRC == &X86::GR32RegClass) {
- BuildMI(MBB, MI, TII.get(X86::PUSHFD));
- BuildMI(MBB, MI, TII.get(X86::POP32r), DestReg);
- return;
- }
- } else if (DestRC == &X86::CCRRegClass) {
- assert(DestReg == X86::EFLAGS);
- if (SrcRC == &X86::GR64RegClass) {
- BuildMI(MBB, MI, TII.get(X86::PUSH64r)).addReg(SrcReg);
- BuildMI(MBB, MI, TII.get(X86::POPFQ));
- return;
- } else if (SrcRC == &X86::GR32RegClass) {
- BuildMI(MBB, MI, TII.get(X86::PUSH32r)).addReg(SrcReg);
- BuildMI(MBB, MI, TII.get(X86::POPFD));
- return;
- }
- }
- cerr << "Not yet supported!";
- abort();
- }
-
- unsigned Opc;
- if (DestRC == &X86::GR64RegClass) {
- Opc = X86::MOV64rr;
- } else if (DestRC == &X86::GR32RegClass) {
- Opc = X86::MOV32rr;
- } else if (DestRC == &X86::GR16RegClass) {
- Opc = X86::MOV16rr;
- } else if (DestRC == &X86::GR8RegClass) {
- Opc = X86::MOV8rr;
- } else if (DestRC == &X86::GR32_RegClass) {
- Opc = X86::MOV32_rr;
- } else if (DestRC == &X86::GR16_RegClass) {
- Opc = X86::MOV16_rr;
- } else if (DestRC == &X86::RFP32RegClass) {
- Opc = X86::MOV_Fp3232;
- } else if (DestRC == &X86::RFP64RegClass || DestRC == &X86::RSTRegClass) {
- Opc = X86::MOV_Fp6464;
- } else if (DestRC == &X86::RFP80RegClass) {
- Opc = X86::MOV_Fp8080;
- } else if (DestRC == &X86::FR32RegClass) {
- Opc = X86::FsMOVAPSrr;
- } else if (DestRC == &X86::FR64RegClass) {
- Opc = X86::FsMOVAPDrr;
- } else if (DestRC == &X86::VR128RegClass) {
- Opc = X86::MOVAPSrr;
- } else if (DestRC == &X86::VR64RegClass) {
- Opc = X86::MMX_MOVQ64rr;
- } else {
- assert(0 && "Unknown regclass");
- abort();
- }
- BuildMI(MBB, MI, TII.get(Opc), DestReg).addReg(SrcReg);
-}
-
const TargetRegisterClass *
X86RegisterInfo::getCrossCopyRegClass(const TargetRegisterClass *RC) const {
- if (RC == &X86::CCRRegClass)
+ if (RC == &X86::CCRRegClass) {
if (Is64Bit)
return &X86::GR64RegClass;
else
return &X86::GR32RegClass;
- return NULL;
-}
-
-void X86RegisterInfo::reMaterialize(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- unsigned DestReg,
- const MachineInstr *Orig) const {
- // MOV32r0 etc. are implemented with xor which clobbers condition code.
- // Re-materialize them as movri instructions to avoid side effects.
- switch (Orig->getOpcode()) {
- case X86::MOV8r0:
- BuildMI(MBB, I, TII.get(X86::MOV8ri), DestReg).addImm(0);
- break;
- case X86::MOV16r0:
- BuildMI(MBB, I, TII.get(X86::MOV16ri), DestReg).addImm(0);
- break;
- case X86::MOV32r0:
- BuildMI(MBB, I, TII.get(X86::MOV32ri), DestReg).addImm(0);
- break;
- case X86::MOV64r0:
- BuildMI(MBB, I, TII.get(X86::MOV64ri32), DestReg).addImm(0);
- break;
- default: {
- MachineInstr *MI = Orig->clone();
- MI->getOperand(0).setReg(DestReg);
- MBB.insert(I, MI);
- break;
- }
}
-}
-
-static MachineInstr *FuseTwoAddrInst(unsigned Opcode,
- SmallVector<MachineOperand,4> &MOs,
- MachineInstr *MI, const TargetInstrInfo &TII) {
- // Create the base instruction with the memory operand as the first part.
- MachineInstr *NewMI = new MachineInstr(TII.get(Opcode), true);
- MachineInstrBuilder MIB(NewMI);
- unsigned NumAddrOps = MOs.size();
- for (unsigned i = 0; i != NumAddrOps; ++i)
- MIB = X86InstrAddOperand(MIB, MOs[i]);
- if (NumAddrOps < 4) // FrameIndex only
- MIB.addImm(1).addReg(0).addImm(0);
-
- // Loop over the rest of the ri operands, converting them over.
- unsigned NumOps = TII.getNumOperands(MI->getOpcode())-2;
- for (unsigned i = 0; i != NumOps; ++i) {
- MachineOperand &MO = MI->getOperand(i+2);
- MIB = X86InstrAddOperand(MIB, MO);
- }
- for (unsigned i = NumOps+2, e = MI->getNumOperands(); i != e; ++i) {
- MachineOperand &MO = MI->getOperand(i);
- MIB = X86InstrAddOperand(MIB, MO);
- }
- return MIB;
-}
-
-static MachineInstr *FuseInst(unsigned Opcode, unsigned OpNo,
- SmallVector<MachineOperand,4> &MOs,
- MachineInstr *MI, const TargetInstrInfo &TII) {
- MachineInstr *NewMI = new MachineInstr(TII.get(Opcode), true);
- MachineInstrBuilder MIB(NewMI);
-
- for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
- MachineOperand &MO = MI->getOperand(i);
- if (i == OpNo) {
- assert(MO.isRegister() && "Expected to fold into reg operand!");
- unsigned NumAddrOps = MOs.size();
- for (unsigned i = 0; i != NumAddrOps; ++i)
- MIB = X86InstrAddOperand(MIB, MOs[i]);
- if (NumAddrOps < 4) // FrameIndex only
- MIB.addImm(1).addReg(0).addImm(0);
- } else {
- MIB = X86InstrAddOperand(MIB, MO);
- }
- }
- return MIB;
-}
-
-static MachineInstr *MakeM0Inst(const TargetInstrInfo &TII, unsigned Opcode,
- SmallVector<MachineOperand,4> &MOs,
- MachineInstr *MI) {
- MachineInstrBuilder MIB = BuildMI(TII.get(Opcode));
-
- unsigned NumAddrOps = MOs.size();
- for (unsigned i = 0; i != NumAddrOps; ++i)
- MIB = X86InstrAddOperand(MIB, MOs[i]);
- if (NumAddrOps < 4) // FrameIndex only
- MIB.addImm(1).addReg(0).addImm(0);
- return MIB.addImm(0);
-}
-
-MachineInstr*
-X86RegisterInfo::foldMemoryOperand(MachineInstr *MI, unsigned i,
- SmallVector<MachineOperand,4> &MOs) const {
- const DenseMap<unsigned*, unsigned> *OpcodeTablePtr = NULL;
- bool isTwoAddrFold = false;
- unsigned NumOps = TII.getNumOperands(MI->getOpcode());
- bool isTwoAddr = NumOps > 1 &&
- MI->getInstrDescriptor()->getOperandConstraint(1, TOI::TIED_TO) != -1;
-
- MachineInstr *NewMI = NULL;
- // Folding a memory location into the two-address part of a two-address
- // instruction is different than folding it other places. It requires
- // replacing the *two* registers with the memory location.
- if (isTwoAddr && NumOps >= 2 && i < 2 &&
- MI->getOperand(0).isRegister() &&
- MI->getOperand(1).isRegister() &&
- MI->getOperand(0).getReg() == MI->getOperand(1).getReg()) {
- OpcodeTablePtr = &RegOp2MemOpTable2Addr;
- isTwoAddrFold = true;
- } else if (i == 0) { // If operand 0
- if (MI->getOpcode() == X86::MOV16r0)
- NewMI = MakeM0Inst(TII, X86::MOV16mi, MOs, MI);
- else if (MI->getOpcode() == X86::MOV32r0)
- NewMI = MakeM0Inst(TII, X86::MOV32mi, MOs, MI);
- else if (MI->getOpcode() == X86::MOV64r0)
- NewMI = MakeM0Inst(TII, X86::MOV64mi32, MOs, MI);
- else if (MI->getOpcode() == X86::MOV8r0)
- NewMI = MakeM0Inst(TII, X86::MOV8mi, MOs, MI);
- if (NewMI) {
- NewMI->copyKillDeadInfo(MI);
- return NewMI;
- }
-
- OpcodeTablePtr = &RegOp2MemOpTable0;
- } else if (i == 1) {
- OpcodeTablePtr = &RegOp2MemOpTable1;
- } else if (i == 2) {
- OpcodeTablePtr = &RegOp2MemOpTable2;
- }
-
- // If table selected...
- if (OpcodeTablePtr) {
- // Find the Opcode to fuse
- DenseMap<unsigned*, unsigned>::iterator I =
- OpcodeTablePtr->find((unsigned*)MI->getOpcode());
- if (I != OpcodeTablePtr->end()) {
- if (isTwoAddrFold)
- NewMI = FuseTwoAddrInst(I->second, MOs, MI, TII);
- else
- NewMI = FuseInst(I->second, i, MOs, MI, TII);
- NewMI->copyKillDeadInfo(MI);
- return NewMI;
- }
- }
-
- // No fusion
- if (PrintFailedFusing)
- cerr << "We failed to fuse ("
- << ((i == 1) ? "r" : "s") << "): " << *MI;
return NULL;
}
+const unsigned *
+X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
+ bool callsEHReturn = false;
-MachineInstr* X86RegisterInfo::foldMemoryOperand(MachineInstr *MI,
- SmallVectorImpl<unsigned> &Ops,
- int FrameIndex) const {
- // Check switch flag
- if (NoFusing) return NULL;
-
- if (Ops.size() == 2 && Ops[0] == 0 && Ops[1] == 1) {
- unsigned NewOpc = 0;
- switch (MI->getOpcode()) {
- default: return NULL;
- case X86::TEST8rr: NewOpc = X86::CMP8ri; break;
- case X86::TEST16rr: NewOpc = X86::CMP16ri; break;
- case X86::TEST32rr: NewOpc = X86::CMP32ri; break;
- case X86::TEST64rr: NewOpc = X86::CMP64ri32; break;
- }
- // Change to CMPXXri r, 0 first.
- MI->setInstrDescriptor(TII.get(NewOpc));
- MI->getOperand(1).ChangeToImmediate(0);
- } else if (Ops.size() != 1)
- return NULL;
-
- SmallVector<MachineOperand,4> MOs;
- MOs.push_back(MachineOperand::CreateFrameIndex(FrameIndex));
- return foldMemoryOperand(MI, Ops[0], MOs);
-}
-
-MachineInstr* X86RegisterInfo::foldMemoryOperand(MachineInstr *MI,
- SmallVectorImpl<unsigned> &Ops,
- MachineInstr *LoadMI) const {
- // Check switch flag
- if (NoFusing) return NULL;
-
- if (Ops.size() == 2 && Ops[0] == 0 && Ops[1] == 1) {
- unsigned NewOpc = 0;
- switch (MI->getOpcode()) {
- default: return NULL;
- case X86::TEST8rr: NewOpc = X86::CMP8ri; break;
- case X86::TEST16rr: NewOpc = X86::CMP16ri; break;
- case X86::TEST32rr: NewOpc = X86::CMP32ri; break;
- case X86::TEST64rr: NewOpc = X86::CMP64ri32; break;
- }
- // Change to CMPXXri r, 0 first.
- MI->setInstrDescriptor(TII.get(NewOpc));
- MI->getOperand(1).ChangeToImmediate(0);
- } else if (Ops.size() != 1)
- return NULL;
-
- SmallVector<MachineOperand,4> MOs;
- unsigned NumOps = TII.getNumOperands(LoadMI->getOpcode());
- for (unsigned i = NumOps - 4; i != NumOps; ++i)
- MOs.push_back(LoadMI->getOperand(i));
- return foldMemoryOperand(MI, Ops[0], MOs);
-}
-
-
-unsigned X86RegisterInfo::getOpcodeAfterMemoryFold(unsigned Opc,
- unsigned OpNum) const {
- // Check switch flag
- if (NoFusing) return 0;
- const DenseMap<unsigned*, unsigned> *OpcodeTablePtr = NULL;
- unsigned NumOps = TII.getNumOperands(Opc);
- bool isTwoAddr = NumOps > 1 &&
- TII.getOperandConstraint(Opc, 1, TOI::TIED_TO) != -1;
-
- // Folding a memory location into the two-address part of a two-address
- // instruction is different than folding it other places. It requires
- // replacing the *two* registers with the memory location.
- if (isTwoAddr && NumOps >= 2 && OpNum < 2) {
- OpcodeTablePtr = &RegOp2MemOpTable2Addr;
- } else if (OpNum == 0) { // If operand 0
- switch (Opc) {
- case X86::MOV16r0:
- return X86::MOV16mi;
- case X86::MOV32r0:
- return X86::MOV32mi;
- case X86::MOV64r0:
- return X86::MOV64mi32;
- case X86::MOV8r0:
- return X86::MOV8mi;
- default: break;
- }
- OpcodeTablePtr = &RegOp2MemOpTable0;
- } else if (OpNum == 1) {
- OpcodeTablePtr = &RegOp2MemOpTable1;
- } else if (OpNum == 2) {
- OpcodeTablePtr = &RegOp2MemOpTable2;
- }
-
- if (OpcodeTablePtr) {
- // Find the Opcode to fuse
- DenseMap<unsigned*, unsigned>::iterator I =
- OpcodeTablePtr->find((unsigned*)Opc);
- if (I != OpcodeTablePtr->end())
- return I->second;
- }
- return 0;
-}
-
-bool X86RegisterInfo::unfoldMemoryOperand(MachineFunction &MF, MachineInstr *MI,
- unsigned Reg, bool UnfoldLoad, bool UnfoldStore,
- SmallVectorImpl<MachineInstr*> &NewMIs) const {
- DenseMap<unsigned*, std::pair<unsigned,unsigned> >::iterator I =
- MemOp2RegOpTable.find((unsigned*)MI->getOpcode());
- if (I == MemOp2RegOpTable.end())
- return false;
- unsigned Opc = I->second.first;
- unsigned Index = I->second.second & 0xf;
- bool FoldedLoad = I->second.second & (1 << 4);
- bool FoldedStore = I->second.second & (1 << 5);
- if (UnfoldLoad && !FoldedLoad)
- return false;
- UnfoldLoad &= FoldedLoad;
- if (UnfoldStore && !FoldedStore)
- return false;
- UnfoldStore &= FoldedStore;
-
- const TargetInstrDescriptor &TID = TII.get(Opc);
- const TargetOperandInfo &TOI = TID.OpInfo[Index];
- const TargetRegisterClass *RC = (TOI.Flags & M_LOOK_UP_PTR_REG_CLASS)
- ? TII.getPointerRegClass() : getRegClass(TOI.RegClass);
- SmallVector<MachineOperand,4> AddrOps;
- SmallVector<MachineOperand,2> BeforeOps;
- SmallVector<MachineOperand,2> AfterOps;
- SmallVector<MachineOperand,4> ImpOps;
- for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
- MachineOperand &Op = MI->getOperand(i);
- if (i >= Index && i < Index+4)
- AddrOps.push_back(Op);
- else if (Op.isRegister() && Op.isImplicit())
- ImpOps.push_back(Op);
- else if (i < Index)
- BeforeOps.push_back(Op);
- else if (i > Index)
- AfterOps.push_back(Op);
- }
-
- // Emit the load instruction.
- if (UnfoldLoad) {
- loadRegFromAddr(MF, Reg, AddrOps, RC, NewMIs);
- if (UnfoldStore) {
- // Address operands cannot be marked isKill.
- for (unsigned i = 1; i != 5; ++i) {
- MachineOperand &MO = NewMIs[0]->getOperand(i);
- if (MO.isRegister())
- MO.unsetIsKill();
- }
- }
- }
-
- // Emit the data processing instruction.
- MachineInstr *DataMI = new MachineInstr(TID, true);
- MachineInstrBuilder MIB(DataMI);
-
- if (FoldedStore)
- MIB.addReg(Reg, true);
- for (unsigned i = 0, e = BeforeOps.size(); i != e; ++i)
- MIB = X86InstrAddOperand(MIB, BeforeOps[i]);
- if (FoldedLoad)
- MIB.addReg(Reg);
- for (unsigned i = 0, e = AfterOps.size(); i != e; ++i)
- MIB = X86InstrAddOperand(MIB, AfterOps[i]);
- for (unsigned i = 0, e = ImpOps.size(); i != e; ++i) {
- MachineOperand &MO = ImpOps[i];
- MIB.addReg(MO.getReg(), MO.isDef(), true, MO.isKill(), MO.isDead());
- }
- // Change CMP32ri r, 0 back to TEST32rr r, r, etc.
- unsigned NewOpc = 0;
- switch (DataMI->getOpcode()) {
- default: break;
- case X86::CMP64ri32:
- case X86::CMP32ri:
- case X86::CMP16ri:
- case X86::CMP8ri: {
- MachineOperand &MO0 = DataMI->getOperand(0);
- MachineOperand &MO1 = DataMI->getOperand(1);
- if (MO1.getImm() == 0) {
- switch (DataMI->getOpcode()) {
- default: break;
- case X86::CMP64ri32: NewOpc = X86::TEST64rr; break;
- case X86::CMP32ri: NewOpc = X86::TEST32rr; break;
- case X86::CMP16ri: NewOpc = X86::TEST16rr; break;
- case X86::CMP8ri: NewOpc = X86::TEST8rr; break;
- }
- DataMI->setInstrDescriptor(TII.get(NewOpc));
- MO1.ChangeToRegister(MO0.getReg(), false);
- }
- }
- }
- NewMIs.push_back(DataMI);
-
- // Emit the store instruction.
- if (UnfoldStore) {
- const TargetOperandInfo &DstTOI = TID.OpInfo[0];
- const TargetRegisterClass *DstRC = (DstTOI.Flags & M_LOOK_UP_PTR_REG_CLASS)
- ? TII.getPointerRegClass() : getRegClass(DstTOI.RegClass);
- storeRegToAddr(MF, Reg, AddrOps, DstRC, NewMIs);
- }
-
- return true;
-}
-
-
-bool
-X86RegisterInfo::unfoldMemoryOperand(SelectionDAG &DAG, SDNode *N,
- SmallVectorImpl<SDNode*> &NewNodes) const {
- if (!N->isTargetOpcode())
- return false;
-
- DenseMap<unsigned*, std::pair<unsigned,unsigned> >::iterator I =
- MemOp2RegOpTable.find((unsigned*)N->getTargetOpcode());
- if (I == MemOp2RegOpTable.end())
- return false;
- unsigned Opc = I->second.first;
- unsigned Index = I->second.second & 0xf;
- bool FoldedLoad = I->second.second & (1 << 4);
- bool FoldedStore = I->second.second & (1 << 5);
- const TargetInstrDescriptor &TID = TII.get(Opc);
- const TargetOperandInfo &TOI = TID.OpInfo[Index];
- const TargetRegisterClass *RC = (TOI.Flags & M_LOOK_UP_PTR_REG_CLASS)
- ? TII.getPointerRegClass() : getRegClass(TOI.RegClass);
- std::vector<SDOperand> AddrOps;
- std::vector<SDOperand> BeforeOps;
- std::vector<SDOperand> AfterOps;
- unsigned NumOps = N->getNumOperands();
- for (unsigned i = 0; i != NumOps-1; ++i) {
- SDOperand Op = N->getOperand(i);
- if (i >= Index && i < Index+4)
- AddrOps.push_back(Op);
- else if (i < Index)
- BeforeOps.push_back(Op);
- else if (i > Index)
- AfterOps.push_back(Op);
- }
- SDOperand Chain = N->getOperand(NumOps-1);
- AddrOps.push_back(Chain);
-
- // Emit the load instruction.
- SDNode *Load = 0;
- if (FoldedLoad) {
- MVT::ValueType VT = *RC->vt_begin();
- Load = DAG.getTargetNode(getLoadRegOpcode(RC, StackAlign), VT, MVT::Other,
- &AddrOps[0], AddrOps.size());
- NewNodes.push_back(Load);
+ if (MF) {
+ const MachineFrameInfo *MFI = MF->getFrameInfo();
+ const MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
+ callsEHReturn = (MMI ? MMI->callsEHReturn() : false);
}
- // Emit the data processing instruction.
- std::vector<MVT::ValueType> VTs;
- const TargetRegisterClass *DstRC = 0;
- if (TID.numDefs > 0) {
- const TargetOperandInfo &DstTOI = TID.OpInfo[0];
- DstRC = (DstTOI.Flags & M_LOOK_UP_PTR_REG_CLASS)
- ? TII.getPointerRegClass() : getRegClass(DstTOI.RegClass);
- VTs.push_back(*DstRC->vt_begin());
- }
- for (unsigned i = 0, e = N->getNumValues(); i != e; ++i) {
- MVT::ValueType VT = N->getValueType(i);
- if (VT != MVT::Other && i >= TID.numDefs)
- VTs.push_back(VT);
- }
- if (Load)
- BeforeOps.push_back(SDOperand(Load, 0));
- std::copy(AfterOps.begin(), AfterOps.end(), std::back_inserter(BeforeOps));
- SDNode *NewNode= DAG.getTargetNode(Opc, VTs, &BeforeOps[0], BeforeOps.size());
- NewNodes.push_back(NewNode);
-
- // Emit the store instruction.
- if (FoldedStore) {
- AddrOps.pop_back();
- AddrOps.push_back(SDOperand(NewNode, 0));
- AddrOps.push_back(Chain);
- SDNode *Store = DAG.getTargetNode(getStoreRegOpcode(DstRC, StackAlign),
- MVT::Other, &AddrOps[0], AddrOps.size());
- NewNodes.push_back(Store);
- }
-
- return true;
-}
-
-unsigned X86RegisterInfo::getOpcodeAfterMemoryUnfold(unsigned Opc,
- bool UnfoldLoad, bool UnfoldStore) const {
- DenseMap<unsigned*, std::pair<unsigned,unsigned> >::iterator I =
- MemOp2RegOpTable.find((unsigned*)Opc);
- if (I == MemOp2RegOpTable.end())
- return 0;
- bool FoldedLoad = I->second.second & (1 << 4);
- bool FoldedStore = I->second.second & (1 << 5);
- if (UnfoldLoad && !FoldedLoad)
- return 0;
- if (UnfoldStore && !FoldedStore)
- return 0;
- return I->second.first;
-}
-
-const unsigned *
-X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
static const unsigned CalleeSavedRegs32Bit[] = {
X86::ESI, X86::EDI, X86::EBX, X86::EBP, 0
};
X86::RBX, X86::R12, X86::R13, X86::R14, X86::R15, X86::RBP, 0
};
- if (Is64Bit)
- return CalleeSavedRegs64Bit;
- else {
- if (MF) {
- MachineFrameInfo *MFI = MF->getFrameInfo();
- MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
- if (MMI && MMI->callsEHReturn())
- return CalleeSavedRegs32EHRet;
- }
- return CalleeSavedRegs32Bit;
+ static const unsigned CalleeSavedRegs64EHRet[] = {
+ X86::RAX, X86::RDX, X86::RBX, X86::R12,
+ X86::R13, X86::R14, X86::R15, X86::RBP, 0
+ };
+
+ static const unsigned CalleeSavedRegsWin64[] = {
+ X86::RBX, X86::RBP, X86::RDI, X86::RSI,
+ X86::R12, X86::R13, X86::R14, X86::R15,
+ X86::XMM6, X86::XMM7, X86::XMM8, X86::XMM9,
+ X86::XMM10, X86::XMM11, X86::XMM12, X86::XMM13,
+ X86::XMM14, X86::XMM15, 0
+ };
+
+ if (Is64Bit) {
+ if (IsWin64)
+ return CalleeSavedRegsWin64;
+ else
+ return (callsEHReturn ? CalleeSavedRegs64EHRet : CalleeSavedRegs64Bit);
+ } else {
+ return (callsEHReturn ? CalleeSavedRegs32EHRet : CalleeSavedRegs32Bit);
}
}
const TargetRegisterClass* const*
X86RegisterInfo::getCalleeSavedRegClasses(const MachineFunction *MF) const {
+ bool callsEHReturn = false;
+
+ if (MF) {
+ const MachineFrameInfo *MFI = MF->getFrameInfo();
+ const MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
+ callsEHReturn = (MMI ? MMI->callsEHReturn() : false);
+ }
+
static const TargetRegisterClass * const CalleeSavedRegClasses32Bit[] = {
&X86::GR32RegClass, &X86::GR32RegClass,
&X86::GR32RegClass, &X86::GR32RegClass, 0
&X86::GR64RegClass, &X86::GR64RegClass,
&X86::GR64RegClass, &X86::GR64RegClass, 0
};
+ static const TargetRegisterClass * const CalleeSavedRegClasses64EHRet[] = {
+ &X86::GR64RegClass, &X86::GR64RegClass,
+ &X86::GR64RegClass, &X86::GR64RegClass,
+ &X86::GR64RegClass, &X86::GR64RegClass,
+ &X86::GR64RegClass, &X86::GR64RegClass, 0
+ };
+ static const TargetRegisterClass * const CalleeSavedRegClassesWin64[] = {
+ &X86::GR64RegClass, &X86::GR64RegClass,
+ &X86::GR64RegClass, &X86::GR64RegClass,
+ &X86::GR64RegClass, &X86::GR64RegClass,
+ &X86::GR64RegClass, &X86::GR64RegClass,
+ &X86::VR128RegClass, &X86::VR128RegClass,
+ &X86::VR128RegClass, &X86::VR128RegClass,
+ &X86::VR128RegClass, &X86::VR128RegClass,
+ &X86::VR128RegClass, &X86::VR128RegClass,
+ &X86::VR128RegClass, &X86::VR128RegClass, 0
+ };
- if (Is64Bit)
- return CalleeSavedRegClasses64Bit;
- else {
- if (MF) {
- MachineFrameInfo *MFI = MF->getFrameInfo();
- MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
- if (MMI && MMI->callsEHReturn())
- return CalleeSavedRegClasses32EHRet;
- }
- return CalleeSavedRegClasses32Bit;
+ if (Is64Bit) {
+ if (IsWin64)
+ return CalleeSavedRegClassesWin64;
+ else
+ return (callsEHReturn ?
+ CalleeSavedRegClasses64EHRet : CalleeSavedRegClasses64Bit);
+ } else {
+ return (callsEHReturn ?
+ CalleeSavedRegClasses32EHRet : CalleeSavedRegClasses32Bit);
}
-
}
BitVector X86RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
// Stack Frame Processing methods
//===----------------------------------------------------------------------===//
+static unsigned calculateMaxStackAlignment(const MachineFrameInfo *FFI) {
+ unsigned MaxAlign = 0;
+ for (int i = FFI->getObjectIndexBegin(),
+ e = FFI->getObjectIndexEnd(); i != e; ++i) {
+ if (FFI->isDeadObjectIndex(i))
+ continue;
+ unsigned Align = FFI->getObjectAlignment(i);
+ MaxAlign = std::max(MaxAlign, Align);
+ }
+
+ return MaxAlign;
+}
+
// hasFP - Return true if the specified function should have a dedicated frame
// pointer register. This is true if the function has variable sized allocas or
// if frame pointer elimination is disabled.
//
bool X86RegisterInfo::hasFP(const MachineFunction &MF) const {
- MachineFrameInfo *MFI = MF.getFrameInfo();
- MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
+ const MachineFrameInfo *MFI = MF.getFrameInfo();
+ const MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
- return (NoFramePointerElim ||
+ return (NoFramePointerElim ||
+ needsStackRealignment(MF) ||
MFI->hasVarSizedObjects() ||
MF.getInfo<X86MachineFunctionInfo>()->getForceFramePointer() ||
(MMI && MMI->callsUnwindInit()));
}
+bool X86RegisterInfo::needsStackRealignment(const MachineFunction &MF) const {
+ const MachineFrameInfo *MFI = MF.getFrameInfo();;
+
+ // FIXME: Currently we don't support stack realignment for functions with
+ // variable-sized allocas
+ return (RealignStack &&
+ (MFI->getMaxAlignment() > StackAlign &&
+ !MFI->hasVarSizedObjects()));
+}
+
bool X86RegisterInfo::hasReservedCallFrame(MachineFunction &MF) const {
return !MF.getFrameInfo()->hasVarSizedObjects();
}
+int
+X86RegisterInfo::getFrameIndexOffset(MachineFunction &MF, int FI) const {
+ int Offset = MF.getFrameInfo()->getObjectOffset(FI) + SlotSize;
+ uint64_t StackSize = MF.getFrameInfo()->getStackSize();
+
+ if (needsStackRealignment(MF)) {
+ if (FI < 0)
+ // Skip the saved EBP
+ Offset += SlotSize;
+ else {
+ unsigned Align = MF.getFrameInfo()->getObjectAlignment(FI);
+ assert( (-(Offset + StackSize)) % Align == 0);
+ return Offset + StackSize;
+ }
+
+ // FIXME: Support tail calls
+ } else {
+ if (!hasFP(MF))
+ return Offset + StackSize;
+
+ // Skip the saved EBP
+ Offset += SlotSize;
+
+ // Skip the RETADDR move area
+ X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
+ int TailCallReturnAddrDelta = X86FI->getTCReturnAddrDelta();
+ if (TailCallReturnAddrDelta < 0) Offset -= TailCallReturnAddrDelta;
+ }
+
+ return Offset;
+}
+
void X86RegisterInfo::
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const {
MachineInstr *New = 0;
if (Old->getOpcode() == X86::ADJCALLSTACKDOWN) {
- New=BuildMI(TII.get(Is64Bit ? X86::SUB64ri32 : X86::SUB32ri), StackPtr)
- .addReg(StackPtr).addImm(Amount);
+ New = BuildMI(MF, TII.get(Is64Bit ? X86::SUB64ri32 : X86::SUB32ri),
+ StackPtr).addReg(StackPtr).addImm(Amount);
} else {
assert(Old->getOpcode() == X86::ADJCALLSTACKUP);
// factor out the amount the callee already popped.
unsigned Opc = (Amount < 128) ?
(Is64Bit ? X86::ADD64ri8 : X86::ADD32ri8) :
(Is64Bit ? X86::ADD64ri32 : X86::ADD32ri);
- New = BuildMI(TII.get(Opc), StackPtr).addReg(StackPtr).addImm(Amount);
+ New = BuildMI(MF, TII.get(Opc), StackPtr)
+ .addReg(StackPtr).addImm(Amount);
}
}
(Is64Bit ? X86::SUB64ri8 : X86::SUB32ri8) :
(Is64Bit ? X86::SUB64ri32 : X86::SUB32ri);
MachineInstr *New =
- BuildMI(TII.get(Opc), StackPtr).addReg(StackPtr).addImm(CalleeAmt);
+ BuildMI(MF, TII.get(Opc), StackPtr).addReg(StackPtr).addImm(CalleeAmt);
MBB.insert(I, New);
}
}
assert(i < MI.getNumOperands() && "Instr doesn't have FrameIndex operand!");
}
- int FrameIndex = MI.getOperand(i).getFrameIndex();
+ int FrameIndex = MI.getOperand(i).getIndex();
+
+ unsigned BasePtr;
+ if (needsStackRealignment(MF))
+ BasePtr = (FrameIndex < 0 ? FramePtr : StackPtr);
+ else
+ BasePtr = (hasFP(MF) ? FramePtr : StackPtr);
+
// This must be part of a four operand memory reference. Replace the
// FrameIndex with base register with EBP. Add an offset to the offset.
- MI.getOperand(i).ChangeToRegister(hasFP(MF) ? FramePtr : StackPtr, false);
+ MI.getOperand(i).ChangeToRegister(BasePtr, false);
// Now add the frame object offset to the offset from EBP.
- int64_t Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) +
- MI.getOperand(i+3).getImm()+SlotSize;
+ int64_t Offset = getFrameIndexOffset(MF, FrameIndex) +
+ MI.getOperand(i+3).getImm();
- if (!hasFP(MF))
- Offset += MF.getFrameInfo()->getStackSize();
- else {
- Offset += SlotSize; // Skip the saved EBP
- // Skip the RETADDR move area
- X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
- int TailCallReturnAddrDelta = X86FI->getTCReturnAddrDelta();
- if (TailCallReturnAddrDelta < 0) Offset -= TailCallReturnAddrDelta;
- }
-
MI.getOperand(i+3).ChangeToImmediate(Offset);
}
+void
+X86RegisterInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
+ RegScavenger *RS) const {
+ MachineFrameInfo *FFI = MF.getFrameInfo();
+
+ // Calculate and set max stack object alignment early, so we can decide
+ // whether we will need stack realignment (and thus FP).
+ unsigned MaxAlign = std::max(FFI->getMaxAlignment(),
+ calculateMaxStackAlignment(FFI));
+
+ FFI->setMaxAlignment(MaxAlign);
+}
+
void
X86RegisterInfo::processFunctionBeforeFrameFinalized(MachineFunction &MF) const{
X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
void mergeSPUpdatesUp(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
unsigned StackPtr, uint64_t *NumBytes = NULL) {
if (MBBI == MBB.begin()) return;
-
+
MachineBasicBlock::iterator PI = prior(MBBI);
unsigned Opc = PI->getOpcode();
if ((Opc == X86::ADD64ri32 || Opc == X86::ADD64ri8 ||
MachineBasicBlock::iterator &MBBI,
unsigned StackPtr, uint64_t *NumBytes = NULL) {
return;
-
+
if (MBBI == MBB.end()) return;
-
+
MachineBasicBlock::iterator NI = next(MBBI);
if (NI == MBB.end()) return;
-
+
unsigned Opc = NI->getOpcode();
if ((Opc == X86::ADD64ri32 || Opc == X86::ADD64ri8 ||
Opc == X86::ADD32ri || Opc == X86::ADD32ri8) &&
}
/// mergeSPUpdates - Checks the instruction before/after the passed
-/// instruction. If it is an ADD/SUB instruction it is deleted
+/// instruction. If it is an ADD/SUB instruction it is deleted
/// argument and the stack adjustment is returned as a positive value for ADD
-/// and a negative for SUB.
+/// and a negative for SUB.
static int mergeSPUpdates(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI,
- unsigned StackPtr,
+ unsigned StackPtr,
bool doMergeWithPrevious) {
if ((doMergeWithPrevious && MBBI == MBB.begin()) ||
Offset -= PI->getOperand(2).getImm();
MBB.erase(PI);
if (!doMergeWithPrevious) MBBI = NI;
- }
+ }
return Offset;
}
+void X86RegisterInfo::emitFrameMoves(MachineFunction &MF,
+ unsigned FrameLabelId,
+ unsigned ReadyLabelId) const {
+ MachineFrameInfo *MFI = MF.getFrameInfo();
+ MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
+ if (!MMI)
+ return;
+
+ uint64_t StackSize = MFI->getStackSize();
+ std::vector<MachineMove> &Moves = MMI->getFrameMoves();
+ const TargetData *TD = MF.getTarget().getTargetData();
+
+ // Calculate amount of bytes used for return address storing
+ int stackGrowth =
+ (MF.getTarget().getFrameInfo()->getStackGrowthDirection() ==
+ TargetFrameInfo::StackGrowsUp ?
+ TD->getPointerSize() : -TD->getPointerSize());
+
+ if (StackSize) {
+ // Show update of SP.
+ if (hasFP(MF)) {
+ // Adjust SP
+ MachineLocation SPDst(MachineLocation::VirtualFP);
+ MachineLocation SPSrc(MachineLocation::VirtualFP, 2*stackGrowth);
+ Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
+ } else {
+ MachineLocation SPDst(MachineLocation::VirtualFP);
+ MachineLocation SPSrc(MachineLocation::VirtualFP,
+ -StackSize+stackGrowth);
+ Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
+ }
+ } else {
+ //FIXME: Verify & implement for FP
+ MachineLocation SPDst(StackPtr);
+ MachineLocation SPSrc(StackPtr, stackGrowth);
+ Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
+ }
+
+ // Add callee saved registers to move list.
+ const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
+
+ // FIXME: This is dirty hack. The code itself is pretty mess right now.
+ // It should be rewritten from scratch and generalized sometimes.
+
+ // Determine maximum offset (minumum due to stack growth)
+ int64_t MaxOffset = 0;
+ for (unsigned I = 0, E = CSI.size(); I!=E; ++I)
+ MaxOffset = std::min(MaxOffset,
+ MFI->getObjectOffset(CSI[I].getFrameIdx()));
+
+ // Calculate offsets
+ int64_t saveAreaOffset = (hasFP(MF) ? 3 : 2)*stackGrowth;
+ for (unsigned I = 0, E = CSI.size(); I!=E; ++I) {
+ int64_t Offset = MFI->getObjectOffset(CSI[I].getFrameIdx());
+ unsigned Reg = CSI[I].getReg();
+ Offset = (MaxOffset-Offset+saveAreaOffset);
+ MachineLocation CSDst(MachineLocation::VirtualFP, Offset);
+ MachineLocation CSSrc(Reg);
+ Moves.push_back(MachineMove(FrameLabelId, CSDst, CSSrc));
+ }
+
+ if (hasFP(MF)) {
+ // Save FP
+ MachineLocation FPDst(MachineLocation::VirtualFP, 2*stackGrowth);
+ MachineLocation FPSrc(FramePtr);
+ Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc));
+ }
+
+ MachineLocation FPDst(hasFP(MF) ? FramePtr : StackPtr);
+ MachineLocation FPSrc(MachineLocation::VirtualFP);
+ Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc));
+}
+
+
void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
MachineBasicBlock::iterator MBBI = MBB.begin();
-
+ bool needsFrameMoves = (MMI && MMI->hasDebugInfo()) ||
+ !Fn->doesNotThrow() ||
+ UnwindTablesMandatory;
// Prepare for frame info.
unsigned FrameLabelId = 0;
-
+
// Get the number of bytes to allocate from the FrameInfo.
uint64_t StackSize = MFI->getStackSize();
+ // Get desired stack alignment
+ uint64_t MaxAlign = MFI->getMaxAlignment();
+
// Add RETADDR move area to callee saved frame size.
int TailCallReturnAddrDelta = X86FI->getTCReturnAddrDelta();
- if (TailCallReturnAddrDelta < 0)
+ if (TailCallReturnAddrDelta < 0)
X86FI->setCalleeSavedFrameSize(
X86FI->getCalleeSavedFrameSize() +(-TailCallReturnAddrDelta));
- uint64_t NumBytes = StackSize - X86FI->getCalleeSavedFrameSize();
// Insert stack pointer adjustment for later moving of return addr. Only
// applies to tail call optimized functions where the callee argument stack
// size is bigger than the callers.
if (TailCallReturnAddrDelta < 0) {
- BuildMI(MBB, MBBI, TII.get(Is64Bit? X86::SUB64ri32 : X86::SUB32ri),
+ BuildMI(MBB, MBBI, TII.get(Is64Bit? X86::SUB64ri32 : X86::SUB32ri),
StackPtr).addReg(StackPtr).addImm(-TailCallReturnAddrDelta);
}
+ uint64_t NumBytes = 0;
if (hasFP(MF)) {
+ // Calculate required stack adjustment
+ uint64_t FrameSize = StackSize - SlotSize;
+ if (needsStackRealignment(MF))
+ FrameSize = (FrameSize + MaxAlign - 1)/MaxAlign*MaxAlign;
+
+ NumBytes = FrameSize - X86FI->getCalleeSavedFrameSize();
+
// Get the offset of the stack slot for the EBP register... which is
// guaranteed to be the last slot by processFunctionBeforeFrameFinalized.
// Update the frame offset adjustment.
- MFI->setOffsetAdjustment(SlotSize-NumBytes);
+ MFI->setOffsetAdjustment(-NumBytes);
// Save EBP into the appropriate stack slot...
BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::PUSH64r : X86::PUSH32r))
.addReg(FramePtr);
- NumBytes -= SlotSize;
- if (MMI && MMI->needsFrameInfo()) {
+ if (needsFrameMoves) {
// Mark effective beginning of when frame pointer becomes valid.
FrameLabelId = MMI->NextLabelID();
- BuildMI(MBB, MBBI, TII.get(X86::LABEL)).addImm(FrameLabelId);
+ BuildMI(MBB, MBBI, TII.get(X86::DBG_LABEL)).addImm(FrameLabelId);
}
// Update EBP with the new base value...
BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr), FramePtr)
.addReg(StackPtr);
- }
-
+
+ // Realign stack
+ if (needsStackRealignment(MF))
+ BuildMI(MBB, MBBI,
+ TII.get(Is64Bit ? X86::AND64ri32 : X86::AND32ri),
+ StackPtr).addReg(StackPtr).addImm(-MaxAlign);
+ } else
+ NumBytes = StackSize - X86FI->getCalleeSavedFrameSize();
+
unsigned ReadyLabelId = 0;
- if (MMI && MMI->needsFrameInfo()) {
+ if (needsFrameMoves) {
// Mark effective beginning of when frame pointer is ready.
ReadyLabelId = MMI->NextLabelID();
- BuildMI(MBB, MBBI, TII.get(X86::LABEL)).addImm(ReadyLabelId);
+ BuildMI(MBB, MBBI, TII.get(X86::DBG_LABEL)).addImm(ReadyLabelId);
}
// Skip the callee-saved push instructions.
if (NumBytes >= 4096 && Subtarget->isTargetCygMing()) {
// Check, whether EAX is livein for this function
bool isEAXAlive = false;
- for (MachineFunction::livein_iterator II = MF.livein_begin(),
- EE = MF.livein_end(); (II != EE) && !isEAXAlive; ++II) {
+ for (MachineRegisterInfo::livein_iterator
+ II = MF.getRegInfo().livein_begin(),
+ EE = MF.getRegInfo().livein_end(); (II != EE) && !isEAXAlive; ++II) {
unsigned Reg = II->first;
isEAXAlive = (Reg == X86::EAX || Reg == X86::AX ||
Reg == X86::AH || Reg == X86::AL);
}
- // Function prologue calls _alloca to probe the stack when allocating
- // more than 4k bytes in one go. Touching the stack at 4K increments is
+ // Function prologue calls _alloca to probe the stack when allocating
+ // more than 4k bytes in one go. Touching the stack at 4K increments is
// necessary to ensure that the guard pages used by the OS virtual memory
// manager are allocated in correct sequence.
if (!isEAXAlive) {
BuildMI(MBB, MBBI, TII.get(X86::CALLpcrel32))
.addExternalSymbol("_alloca");
// Restore EAX
- MachineInstr *MI = addRegOffset(BuildMI(TII.get(X86::MOV32rm),X86::EAX),
- StackPtr, NumBytes-4);
+ MachineInstr *MI = addRegOffset(BuildMI(MF, TII.get(X86::MOV32rm),X86::EAX),
+ StackPtr, false, NumBytes-4);
MBB.insert(MBBI, MI);
}
} else {
// If there is an ADD32ri or SUB32ri of ESP immediately after this
// instruction, merge the two instructions.
mergeSPUpdatesDown(MBB, MBBI, StackPtr, &NumBytes);
-
+
if (NumBytes)
emitSPUpdate(MBB, MBBI, StackPtr, -(int64_t)NumBytes, Is64Bit, TII);
}
}
- if (MMI && MMI->needsFrameInfo()) {
- std::vector<MachineMove> &Moves = MMI->getFrameMoves();
- const TargetData *TD = MF.getTarget().getTargetData();
-
- // Calculate amount of bytes used for return address storing
- int stackGrowth =
- (MF.getTarget().getFrameInfo()->getStackGrowthDirection() ==
- TargetFrameInfo::StackGrowsUp ?
- TD->getPointerSize() : -TD->getPointerSize());
-
- if (StackSize) {
- // Show update of SP.
- if (hasFP(MF)) {
- // Adjust SP
- MachineLocation SPDst(MachineLocation::VirtualFP);
- MachineLocation SPSrc(MachineLocation::VirtualFP, 2*stackGrowth);
- Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
- } else {
- MachineLocation SPDst(MachineLocation::VirtualFP);
- MachineLocation SPSrc(MachineLocation::VirtualFP, -StackSize+stackGrowth);
- Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
- }
- } else {
- //FIXME: Verify & implement for FP
- MachineLocation SPDst(StackPtr);
- MachineLocation SPSrc(StackPtr, stackGrowth);
- Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
- }
-
- // Add callee saved registers to move list.
- const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
-
- // FIXME: This is dirty hack. The code itself is pretty mess right now.
- // It should be rewritten from scratch and generalized sometimes.
-
- // Determine maximum offset (minumum due to stack growth)
- int64_t MaxOffset = 0;
- for (unsigned I = 0, E = CSI.size(); I!=E; ++I)
- MaxOffset = std::min(MaxOffset,
- MFI->getObjectOffset(CSI[I].getFrameIdx()));
-
- // Calculate offsets
- int64_t saveAreaOffset = (hasFP(MF) ? 3 : 2)*stackGrowth;
- for (unsigned I = 0, E = CSI.size(); I!=E; ++I) {
- int64_t Offset = MFI->getObjectOffset(CSI[I].getFrameIdx());
- unsigned Reg = CSI[I].getReg();
- Offset = (MaxOffset-Offset+saveAreaOffset);
- MachineLocation CSDst(MachineLocation::VirtualFP, Offset);
- MachineLocation CSSrc(Reg);
- Moves.push_back(MachineMove(FrameLabelId, CSDst, CSSrc));
- }
-
- if (hasFP(MF)) {
- // Save FP
- MachineLocation FPDst(MachineLocation::VirtualFP, 2*stackGrowth);
- MachineLocation FPSrc(FramePtr);
- Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc));
- }
-
- MachineLocation FPDst(hasFP(MF) ? FramePtr : StackPtr);
- MachineLocation FPSrc(MachineLocation::VirtualFP);
- Moves.push_back(MachineMove(ReadyLabelId, FPDst, FPSrc));
- }
-
- // If it's main() on Cygwin\Mingw32 we should align stack as well
- if (Fn->hasExternalLinkage() && Fn->getName() == "main" &&
- Subtarget->isTargetCygMing()) {
- BuildMI(MBB, MBBI, TII.get(X86::AND32ri), X86::ESP)
- .addReg(X86::ESP).addImm(-StackAlign);
-
- // Probe the stack
- BuildMI(MBB, MBBI, TII.get(X86::MOV32ri), X86::EAX).addImm(StackAlign);
- BuildMI(MBB, MBBI, TII.get(X86::CALLpcrel32)).addExternalSymbol("_alloca");
- }
+ if (needsFrameMoves)
+ emitFrameMoves(MF, FrameLabelId, ReadyLabelId);
}
void X86RegisterInfo::emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const {
const MachineFrameInfo *MFI = MF.getFrameInfo();
- const Function* Fn = MF.getFunction();
X86MachineFunctionInfo *X86FI = MF.getInfo<X86MachineFunctionInfo>();
- const X86Subtarget* Subtarget = &MF.getTarget().getSubtarget<X86Subtarget>();
MachineBasicBlock::iterator MBBI = prior(MBB.end());
unsigned RetOpcode = MBBI->getOpcode();
case X86::TCRETURNri64:
case X86::TCRETURNdi64:
case X86::EH_RETURN:
+ case X86::EH_RETURN64:
case X86::TAILJMPd:
case X86::TAILJMPr:
case X86::TAILJMPm: break; // These are ok
// Get the number of bytes to allocate from the FrameInfo
uint64_t StackSize = MFI->getStackSize();
+ uint64_t MaxAlign = MFI->getMaxAlignment();
unsigned CSSize = X86FI->getCalleeSavedFrameSize();
- uint64_t NumBytes = StackSize - CSSize;
+ uint64_t NumBytes = 0;
if (hasFP(MF)) {
+ // Calculate required stack adjustment
+ uint64_t FrameSize = StackSize - SlotSize;
+ if (needsStackRealignment(MF))
+ FrameSize = (FrameSize + MaxAlign - 1)/MaxAlign*MaxAlign;
+
+ NumBytes = FrameSize - CSSize;
+
// pop EBP.
BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::POP64r : X86::POP32r), FramePtr);
- NumBytes -= SlotSize;
- }
+ } else
+ NumBytes = StackSize - CSSize;
// Skip the callee-saved pop instructions.
+ MachineBasicBlock::iterator LastCSPop = MBBI;
while (MBBI != MBB.begin()) {
MachineBasicBlock::iterator PI = prior(MBBI);
unsigned Opc = PI->getOpcode();
- if (Opc != X86::POP32r && Opc != X86::POP64r && !TII.isTerminatorInstr(Opc))
+ if (Opc != X86::POP32r && Opc != X86::POP64r &&
+ !PI->getDesc().isTerminator())
break;
--MBBI;
}
mergeSPUpdatesUp(MBB, MBBI, StackPtr, &NumBytes);
// If dynamic alloca is used, then reset esp to point to the last callee-saved
- // slot before popping them off! Also, if it's main() on Cygwin/Mingw32 we
- // aligned stack in the prologue, - revert stack changes back. Note: we're
- // assuming, that frame pointer was forced for main()
- if (MFI->hasVarSizedObjects() ||
- (Fn->hasExternalLinkage() && Fn->getName() == "main" &&
- Subtarget->isTargetCygMing())) {
- unsigned Opc = Is64Bit ? X86::LEA64r : X86::LEA32r;
+ // slot before popping them off! Same applies for the case, when stack was
+ // realigned
+ if (needsStackRealignment(MF)) {
+ // We cannot use LEA here, because stack pointer was realigned. We need to
+ // deallocate local frame back
+ if (CSSize) {
+ emitSPUpdate(MBB, MBBI, StackPtr, NumBytes, Is64Bit, TII);
+ MBBI = prior(LastCSPop);
+ }
+
+ BuildMI(MBB, MBBI,
+ TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),
+ StackPtr).addReg(FramePtr);
+ } else if (MFI->hasVarSizedObjects()) {
if (CSSize) {
- MachineInstr *MI = addRegOffset(BuildMI(TII.get(Opc), StackPtr),
- FramePtr, -CSSize);
+ unsigned Opc = Is64Bit ? X86::LEA64r : X86::LEA32r;
+ MachineInstr *MI = addRegOffset(BuildMI(MF, TII.get(Opc), StackPtr),
+ FramePtr, false, -CSSize);
MBB.insert(MBBI, MI);
} else
- BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),StackPtr).
- addReg(FramePtr);
+ BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),
+ StackPtr).addReg(FramePtr);
- NumBytes = 0;
+ } else {
+ // adjust stack pointer back: ESP += numbytes
+ if (NumBytes)
+ emitSPUpdate(MBB, MBBI, StackPtr, NumBytes, Is64Bit, TII);
}
- // adjust stack pointer back: ESP += numbytes
- if (NumBytes)
- emitSPUpdate(MBB, MBBI, StackPtr, NumBytes, Is64Bit, TII);
-
// We're returning from function via eh_return.
- if (RetOpcode == X86::EH_RETURN) {
+ if (RetOpcode == X86::EH_RETURN || RetOpcode == X86::EH_RETURN64) {
MBBI = prior(MBB.end());
MachineOperand &DestAddr = MBBI->getOperand(0);
assert(DestAddr.isRegister() && "Offset should be in register!");
- BuildMI(MBB, MBBI, TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),StackPtr).
- addReg(DestAddr.getReg());
+ BuildMI(MBB, MBBI,
+ TII.get(Is64Bit ? X86::MOV64rr : X86::MOV32rr),
+ StackPtr).addReg(DestAddr.getReg());
// Tail call return: adjust the stack pointer and jump to callee
} else if (RetOpcode == X86::TCRETURNri || RetOpcode == X86::TCRETURNdi ||
RetOpcode== X86::TCRETURNri64 || RetOpcode == X86::TCRETURNdi64) {
MachineOperand &JumpTarget = MBBI->getOperand(0);
MachineOperand &StackAdjust = MBBI->getOperand(1);
assert( StackAdjust.isImmediate() && "Expecting immediate value.");
-
+
// Adjust stack pointer.
int StackAdj = StackAdjust.getImm();
int MaxTCDelta = X86FI->getTCReturnAddrDelta();
// Check for possible merge with preceeding ADD instruction.
Offset += mergeSPUpdates(MBB, MBBI, StackPtr, true);
emitSPUpdate(MBB, MBBI, StackPtr, Offset, Is64Bit, TII);
- }
+ }
// Jump to label or value in register.
if (RetOpcode == X86::TCRETURNdi|| RetOpcode == X86::TCRETURNdi64)
BuildMI(MBB, MBBI, TII.get(X86::TAILJMPd)).
BuildMI(MBB, MBBI, TII.get(X86::TAILJMPr), JumpTarget.getReg());
// Delete the pseudo instruction TCRETURN.
MBB.erase(MBBI);
- } else if ((RetOpcode == X86::RET || RetOpcode == X86::RETI) &&
+ } else if ((RetOpcode == X86::RET || RetOpcode == X86::RETI) &&
(X86FI->getTCReturnAddrDelta() < 0)) {
// Add the return addr area delta back since we are not tail calling.
int delta = -1*X86FI->getTCReturnAddrDelta();
}
namespace llvm {
-unsigned getX86SubSuperRegister(unsigned Reg, MVT::ValueType VT, bool High) {
- switch (VT) {
+unsigned getX86SubSuperRegister(unsigned Reg, MVT VT, bool High) {
+ switch (VT.getSimpleVT()) {
default: return Reg;
case MVT::i8:
if (High) {
#include "X86GenRegisterInfo.inc"
+namespace {
+ struct VISIBILITY_HIDDEN MSAC : public MachineFunctionPass {
+ static char ID;
+ MSAC() : MachineFunctionPass(&ID) {}
+
+ virtual bool runOnMachineFunction(MachineFunction &MF) {
+ MachineFrameInfo *FFI = MF.getFrameInfo();
+ MachineRegisterInfo &RI = MF.getRegInfo();
+
+ // Calculate max stack alignment of all already allocated stack objects.
+ unsigned MaxAlign = calculateMaxStackAlignment(FFI);
+
+ // Be over-conservative: scan over all vreg defs and find, whether vector
+ // registers are used. If yes - there is probability, that vector register
+ // will be spilled and thus stack needs to be aligned properly.
+ for (unsigned RegNum = TargetRegisterInfo::FirstVirtualRegister;
+ RegNum < RI.getLastVirtReg(); ++RegNum)
+ MaxAlign = std::max(MaxAlign, RI.getRegClass(RegNum)->getAlignment());
+
+ FFI->setMaxAlignment(MaxAlign);
+
+ return false;
+ }
+
+ virtual const char *getPassName() const {
+ return "X86 Maximal Stack Alignment Calculator";
+ }
+ };
+
+ char MSAC::ID = 0;
+}
+
+FunctionPass*
+llvm::createX86MaxStackAlignmentCalculatorPass() { return new MSAC(); }
projects / oota-llvm.git / blobdiff