#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOpcodes.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
#include <iterator>
using namespace llvm;
#define DEBUG_TYPE "stackmaps"
+static cl::opt<int> StackMapVersion("stackmap-version", cl::init(1),
+ cl::desc("Specify the stackmap encoding version (default = 1)"));
+
+const char *StackMaps::WSMP = "Stack Maps: ";
+
PatchPointOpers::PatchPointOpers(const MachineInstr *MI)
: MI(MI),
HasDef(MI->getOperand(0).isReg() && MI->getOperand(0).isDef() &&
return ScratchIdx;
}
+StackMaps::StackMaps(AsmPrinter &AP) : AP(AP) {
+ if (StackMapVersion != 1)
+ llvm_unreachable("Unsupported stackmap version!");
+}
+
MachineInstr::const_mop_iterator
StackMaps::parseOperand(MachineInstr::const_mop_iterator MOI,
MachineInstr::const_mop_iterator MOE,
assert(TargetRegisterInfo::isPhysicalRegister(MOI->getReg()) &&
"Virtreg operands should have been rewritten before now.");
const TargetRegisterClass *RC =
- AP.TM.getRegisterInfo()->getMinimalPhysRegClass(MOI->getReg());
+ AP.TM.getSubtargetImpl()->getRegisterInfo()->getMinimalPhysRegClass(
+ MOI->getReg());
assert(!MOI->getSubReg() && "Physical subreg still around.");
Locs.push_back(
Location(Location::Register, RC->getSize(), MOI->getReg(), 0));
StackMaps::LiveOutVec
StackMaps::parseRegisterLiveOutMask(const uint32_t *Mask) const {
assert(Mask && "No register mask specified");
- const TargetRegisterInfo *TRI = AP.TM.getRegisterInfo();
+ const TargetRegisterInfo *TRI = AP.TM.getSubtargetImpl()->getRegisterInfo();
LiveOutVec LiveOuts;
// Create a LiveOutReg for each bit that is set in the register mask.
I != E; ++I) {
// Constants are encoded as sign-extended integers.
// -1 is directly encoded as .long 0xFFFFFFFF with no constant pool.
- if (I->LocType == Location::Constant &&
- ((I->Offset + (int64_t(1)<<31)) >> 32) != 0) {
+ if (I->LocType == Location::Constant && !isInt<32>(I->Offset)) {
I->LocType = Location::ConstantIndex;
+ // ConstPool is intentionally a MapVector of 'uint64_t's (as
+ // opposed to 'int64_t's). We should never be in a situation
+ // where we have to insert either the tombstone or the empty
+ // keys into a map, and for a DenseMap<uint64_t, T> these are
+ // (uint64_t)0 and (uint64_t)-1. They can be and are
+ // represented using 32 bit integers.
+
+ assert((uint64_t)I->Offset != DenseMapInfo<uint64_t>::getEmptyKey() &&
+ (uint64_t)I->Offset != DenseMapInfo<uint64_t>::getTombstoneKey() &&
+ "empty and tombstone keys should fit in 32 bits!");
auto Result = ConstPool.insert(std::make_pair(I->Offset, I->Offset));
I->Offset = Result.first - ConstPool.begin();
}
// entry.
const MCExpr *CSOffsetExpr = MCBinaryExpr::CreateSub(
MCSymbolRefExpr::Create(MILabel, OutContext),
- MCSymbolRefExpr::Create(AP.CurrentFnSym, OutContext),
+ MCSymbolRefExpr::Create(AP.CurrentFnSymForSize, OutContext),
OutContext);
- CSInfos.push_back(CallsiteInfo(CSOffsetExpr, ID, Locations, LiveOuts));
+ CSInfos.emplace_back(CSOffsetExpr, ID, std::move(Locations),
+ std::move(LiveOuts));
// Record the stack size of the current function.
const MachineFrameInfo *MFI = AP.MF->getFrameInfo();
+ const TargetRegisterInfo *RegInfo = AP.MF->getSubtarget().getRegisterInfo();
+ const bool DynamicFrameSize = MFI->hasVarSizedObjects() ||
+ RegInfo->needsStackRealignment(*(AP.MF));
FnStackSize[AP.CurrentFnSym] =
- MFI->hasVarSizedObjects() ? UINT64_MAX : MFI->getStackSize();
+ DynamicFrameSize ? UINT64_MAX : MFI->getStackSize();
}
void StackMaps::recordStackMap(const MachineInstr &MI) {
}
#endif
}
+void StackMaps::recordStatepoint(const MachineInstr &MI) {
+ assert(MI.getOpcode() == TargetOpcode::STATEPOINT &&
+ "expected statepoint");
+
+ StatepointOpers opers(&MI);
+ // Record all the deopt and gc operands (they're contiguous and run from the
+ // initial index to the end of the operand list)
+ const unsigned StartIdx = opers.getVarIdx();
+ recordStackMapOpers(MI, 0xABCDEF00,
+ MI.operands_begin() + StartIdx, MI.operands_end(),
+ false);
+}
/// Emit the stackmap header.
///
/// uint32 : NumRecords
void StackMaps::emitStackmapHeader(MCStreamer &OS) {
// Header.
- OS.EmitIntValue(1, 1); // Version.
+ OS.EmitIntValue(StackMapVersion, 1); // Version.
OS.EmitIntValue(0, 1); // Reserved.
OS.EmitIntValue(0, 2); // Reserved.
/// Serialize the stackmap data.
void StackMaps::serializeToStackMapSection() {
+ (void) WSMP;
// Bail out if there's no stack map data.
assert((!CSInfos.empty() || (CSInfos.empty() && ConstPool.empty())) &&
"Expected empty constant pool too!");
MCContext &OutContext = AP.OutStreamer.getContext();
MCStreamer &OS = AP.OutStreamer;
- const TargetRegisterInfo *TRI = AP.TM.getRegisterInfo();
+ const TargetRegisterInfo *TRI = AP.TM.getSubtargetImpl()->getRegisterInfo();
// Create the section.
const MCSection *StackMapSection =