cl::desc("Disable frame pointer elimination optimization"));
}
+X86RegisterInfo::X86RegisterInfo()
+ : X86GenRegisterInfo(X86::ADJCALLSTACKDOWN, X86::ADJCALLSTACKUP) {}
+
static unsigned getIdx(const TargetRegisterClass *RC) {
switch (RC->getSize()) {
default: assert(0 && "Invalid data size!");
MBBI = MBB.insert(MBBI, MI)+1;
}
-const unsigned* X86RegisterInfo::getCalleeSaveRegs() const {
- static const unsigned CalleeSaveRegs[] = {
- X86::ESI, X86::EDI, X86::EBX, X86::EBP, 0
- };
- return CalleeSaveRegs;
-}
-
-
//===----------------------------------------------------------------------===//
// Stack Frame Processing methods
//===----------------------------------------------------------------------===//
}
}
-
-//===----------------------------------------------------------------------===//
-// Register Class Implementation Code
-//===----------------------------------------------------------------------===//
-
-//===----------------------------------------------------------------------===//
-// 8 Bit Integer Registers
-//
-namespace {
- const unsigned ByteRegClassRegs[] = {
- X86::AL, X86::CL, X86::DL, X86::BL, X86::AH, X86::CH, X86::DH, X86::BH,
- };
-
- TargetRegisterClass X86ByteRegisterClassInstance(1, 1, ByteRegClassRegs,
- ByteRegClassRegs+sizeof(ByteRegClassRegs)/sizeof(ByteRegClassRegs[0]));
-
-//===----------------------------------------------------------------------===//
-// 16 Bit Integer Registers
-//
- const unsigned ShortRegClassRegs[] = {
- X86::AX, X86::CX, X86::DX, X86::BX, X86::SI, X86::DI, X86::BP, X86::SP
- };
-
- struct R16CL : public TargetRegisterClass {
- R16CL():TargetRegisterClass(2, 2, ShortRegClassRegs, ShortRegClassRegs+8) {}
- iterator allocation_order_end(MachineFunction &MF) const {
- if (hasFP(MF)) // Does the function dedicate EBP to being a frame ptr?
- return end()-2; // Don't allocate SP or BP
- else
- return end()-1; // Don't allocate SP
- }
- } X86ShortRegisterClassInstance;
-
-//===----------------------------------------------------------------------===//
-// 32 Bit Integer Registers
-//
- const unsigned IntRegClassRegs[] = {
- X86::EAX, X86::ECX, X86::EDX, X86::EBX,
- X86::ESI, X86::EDI, X86::EBP, X86::ESP
- };
-
- struct R32CL : public TargetRegisterClass {
- R32CL() : TargetRegisterClass(4, 4, IntRegClassRegs, IntRegClassRegs+8) {}
- iterator allocation_order_end(MachineFunction &MF) const {
- if (hasFP(MF)) // Does the function dedicate EBP to being a frame ptr?
- return end()-2; // Don't allocate ESP or EBP
- else
- return end()-1; // Don't allocate ESP
- }
- } X86IntRegisterClassInstance;
-
-//===----------------------------------------------------------------------===//
-// Pseudo Floating Point Registers
-//
- const unsigned PFPRegClassRegs[] = {
-#define PFP(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) X86::ENUM,
-#include "X86RegisterInfo.def"
- };
-
- TargetRegisterClass X86FPRegisterClassInstance(10, 4, PFPRegClassRegs,
- PFPRegClassRegs+sizeof(PFPRegClassRegs)/sizeof(PFPRegClassRegs[0]));
-
-//===----------------------------------------------------------------------===//
-// Register class array...
-//
- const TargetRegisterClass * const X86RegClasses[] = {
- &X86ByteRegisterClassInstance,
- &X86ShortRegisterClassInstance,
- &X86IntRegisterClassInstance,
- &X86FPRegisterClassInstance,
- };
-}
-
-
-// Create static lists to contain register alias sets...
-#define ALIASLIST(NAME, ...) \
- static const unsigned NAME[] = { __VA_ARGS__ };
-#include "X86RegisterInfo.def"
-
-
-// X86Regs - Turn the X86RegisterInfo.def file into a bunch of register
-// descriptors
-//
-static const MRegisterDesc X86Regs[] = {
-#define R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
- { NAME, ALIAS_SET, FLAGS, TSFLAGS },
-#include "X86RegisterInfo.def"
-};
-
-X86RegisterInfo::X86RegisterInfo()
- : MRegisterInfo(X86Regs, sizeof(X86Regs)/sizeof(X86Regs[0]),
- X86RegClasses,
- X86RegClasses+sizeof(X86RegClasses)/sizeof(X86RegClasses[0]),
- X86::ADJCALLSTACKDOWN, X86::ADJCALLSTACKUP) {
-}
-
-
+#include "X86GenRegisterInfo.inc"
const TargetRegisterClass*
X86RegisterInfo::getRegClassForType(const Type* Ty) const {
default: assert(0 && "Invalid type to getClass!");
case Type::BoolTyID:
case Type::SByteTyID:
- case Type::UByteTyID: return &X86ByteRegisterClassInstance;
+ case Type::UByteTyID: return &r8Instance;
case Type::ShortTyID:
- case Type::UShortTyID: return &X86ShortRegisterClassInstance;
+ case Type::UShortTyID: return &r16Instance;
case Type::IntTyID:
case Type::UIntTyID:
- case Type::PointerTyID: return &X86IntRegisterClassInstance;
+ case Type::PointerTyID: return &r32Instance;
case Type::FloatTyID:
- case Type::DoubleTyID: return &X86FPRegisterClassInstance;
+ case Type::DoubleTyID: return &rFPInstance;
}
}
+++ /dev/null
-//===-- X86RegisterInfo.def - X86 Register Information ----------*- C++ -*-===//
-//
-// This file describes all of the registers that the X86 backend uses. It relies
-// on an external 'R' macro being defined that takes the arguments specified
-// below, and is used to make all of the information relevant to registers be in
-// one place.
-//
-//===----------------------------------------------------------------------===//
-
-// NOTE: No include guards desired
-#ifndef R
-#define R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-#ifndef R8
-#define R8(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
- R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-#ifndef R16
-#define R16(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
- R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-#ifndef R32
-#define R32(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
- R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-// Pseudo Floating Point registers
-#ifndef PFP
-#define PFP(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
- R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-// Floating Point Stack registers
-#ifndef FPS
-#define FPS(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
- R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-// Arguments passed into the R macros
-// #1: Enum Name - This ends up being a symbol in the X86 namespace
-// #2: Register name - The name of the register as used by the gnu assembler
-// #3: Register Flags - A bitfield of flags or'd together from the
-// MRegisterInfo.h file.
-// #4: Target Specific Flags - Another bitfield containing X86 specific flags
-// as necessary.
-// #5: Alias set for registers aliased to this register (sets defined below).
-
-
-// The first register must always be a 'noop' register for all backends. This
-// is used as the destination register for instructions that do not produce a
-// value. Some frontends may use this as an operand register to mean special
-// things, for example, the Sparc backend uses R#0 to mean %g0 which always
-// PRODUCES the value 0.
-//
-// The X86 backend uses this value as an operand register only in memory
-// references where it means that there is no base or index register.
-//
-R(NoReg,"none", 0, 0, 0/*noalias*/)
-
-// 32 bit registers, ordered as the processor does...
-R32(EAX, "EAX", MVT::i32, 0, A_EAX)
-R32(ECX, "ECX", MVT::i32, 0, A_ECX)
-R32(EDX, "EDX", MVT::i32, 0, A_EDX)
-R32(EBX, "EBX", MVT::i32, 0, A_EBX)
-R32(ESP, "ESP", MVT::i32, 0, A_ESP)
-R32(EBP, "EBP", MVT::i32, 0, A_EBP)
-R32(ESI, "ESI", MVT::i32, 0, A_ESI)
-R32(EDI, "EDI", MVT::i32, 0, A_EDI)
-
-// 16 bit registers, aliased with the corresponding 32 bit registers above
-R16( AX, "AX" , MVT::i16, 0, A_AX)
-R16( CX, "CX" , MVT::i16, 0, A_CX)
-R16( DX, "DX" , MVT::i16, 0, A_DX)
-R16( BX, "BX" , MVT::i16, 0, A_BX)
-R16( SP, "SP" , MVT::i16, 0, A_SP)
-R16( BP, "BP" , MVT::i16, 0, A_BP)
-R16( SI, "SI" , MVT::i16, 0, A_SI)
-R16( DI, "DI" , MVT::i16, 0, A_DI)
-
-// 8 bit registers aliased with registers above as well
-R8 ( AL, "AL" , MVT::i8 , 0, A_AL)
-R8 ( CL, "CL" , MVT::i8 , 0, A_CL)
-R8 ( DL, "DL" , MVT::i8 , 0, A_DL)
-R8 ( BL, "BL" , MVT::i8 , 0, A_BL)
-R8 ( AH, "AH" , MVT::i8 , 0, A_AH)
-R8 ( CH, "CH" , MVT::i8 , 0, A_CH)
-R8 ( DH, "DH" , MVT::i8 , 0, A_DH)
-R8 ( BH, "BH" , MVT::i8 , 0, A_BH)
-
-// Pseudo Floating Point Registers
-PFP(FP0, "FP0", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP1, "FP1", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP2, "FP2", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP3, "FP3", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP4, "FP4", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP5, "FP5", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP6, "FP6", MVT::f80 , 0, 0 /*noalias*/)
-
-// Floating point stack registers
-FPS(ST0, "ST(0)", MVT::f80, 0, 0)
-FPS(ST1, "ST(1)", MVT::f80, 0, 0)
-FPS(ST2, "ST(2)", MVT::f80, 0, 0)
-FPS(ST3, "ST(3)", MVT::f80, 0, 0)
-FPS(ST4, "ST(4)", MVT::f80, 0, 0)
-FPS(ST5, "ST(5)", MVT::f80, 0, 0)
-FPS(ST6, "ST(6)", MVT::f80, 0, 0)
-FPS(ST7, "ST(7)", MVT::f80, 0, 0)
-
-// Flags, Segment registers, etc...
-
-// This is a slimy hack to make it possible to say that flags are clobbered...
-// Ideally we'd model instructions based on which particular flag(s) they
-// could clobber.
-R(EFLAGS, "EFLAGS", MVT::i16, 0, 0 /*noalias*/)
-
-
-//===----------------------------------------------------------------------===//
-// Register alias set handling...
-//
-
-// Macro to handle definitions of alias sets that registers use...
-#ifndef ALIASLIST
-#define ALIASLIST(NAME, ...)
-#endif
-
-ALIASLIST(A_EAX , X86::AX, X86::AH, X86::AL, 0)
-ALIASLIST(A_ECX , X86::CX, X86::CH, X86::CL, 0)
-ALIASLIST(A_EDX , X86::DX, X86::DH, X86::DL, 0)
-ALIASLIST(A_EBX , X86::BX, X86::BH, X86::BL, 0)
-ALIASLIST(A_ESP , X86::SP, 0)
-ALIASLIST(A_EBP , X86::BP, 0)
-ALIASLIST(A_ESI , X86::SI, 0)
-ALIASLIST(A_EDI , X86::DI, 0)
-ALIASLIST(A_AX , X86::EAX, X86::AH, X86::AL, 0)
-ALIASLIST(A_CX , X86::ECX, X86::CH, X86::CL, 0)
-ALIASLIST(A_DX , X86::EDX, X86::DH, X86::DL, 0)
-ALIASLIST(A_BX , X86::EBX, X86::BH, X86::BL, 0)
-ALIASLIST(A_SP , X86::ESP, 0)
-ALIASLIST(A_BP , X86::EBP, 0)
-ALIASLIST(A_SI , X86::ESI, 0)
-ALIASLIST(A_DI , X86::EDI, 0)
-ALIASLIST(A_AL , X86::EAX, X86::AX, 0)
-ALIASLIST(A_CL , X86::ECX, X86::CX, 0)
-ALIASLIST(A_DL , X86::EDX, X86::DX, 0)
-ALIASLIST(A_BL , X86::EBX, X86::BX, 0)
-ALIASLIST(A_AH , X86::EAX, X86::AX, 0)
-ALIASLIST(A_CH , X86::ECX, X86::CX, 0)
-ALIASLIST(A_DH , X86::EDX, X86::DX, 0)
-ALIASLIST(A_BH , X86::EBX, X86::BX, 0)
-#undef ALIASLIST
-
-// We are now done with the R* macros
-#undef R
-#undef R8
-#undef R16
-#undef R32
-#undef PFP
-#undef FPS
projects / oota-llvm.git / commitdiff