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-rw-r--r--lib/CodeGen/StackMaps.cpp210
1 files changed, 109 insertions, 101 deletions
diff --git a/lib/CodeGen/StackMaps.cpp b/lib/CodeGen/StackMaps.cpp
index f1d1160c95289..ffe59c19d3e0f 100644
--- a/lib/CodeGen/StackMaps.cpp
+++ b/lib/CodeGen/StackMaps.cpp
@@ -19,8 +19,6 @@
#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"
@@ -76,21 +74,32 @@ StackMaps::StackMaps(AsmPrinter &AP) : AP(AP) {
llvm_unreachable("Unsupported stackmap version!");
}
+/// Go up the super-register chain until we hit a valid dwarf register number.
+static unsigned getDwarfRegNum(unsigned Reg, const TargetRegisterInfo *TRI) {
+ int RegNo = TRI->getDwarfRegNum(Reg, false);
+ for (MCSuperRegIterator SR(Reg, TRI); SR.isValid() && RegNo < 0; ++SR)
+ RegNo = TRI->getDwarfRegNum(*SR, false);
+
+ assert(RegNo >= 0 && "Invalid Dwarf register number.");
+ return (unsigned) RegNo;
+}
+
MachineInstr::const_mop_iterator
StackMaps::parseOperand(MachineInstr::const_mop_iterator MOI,
MachineInstr::const_mop_iterator MOE,
LocationVec &Locs, LiveOutVec &LiveOuts) const {
+ const TargetRegisterInfo *TRI = AP.MF->getSubtarget().getRegisterInfo();
if (MOI->isImm()) {
switch (MOI->getImm()) {
default: llvm_unreachable("Unrecognized operand type.");
case StackMaps::DirectMemRefOp: {
- unsigned Size =
- AP.TM.getSubtargetImpl()->getDataLayout()->getPointerSizeInBits();
+ unsigned Size = AP.TM.getDataLayout()->getPointerSizeInBits();
assert((Size % 8) == 0 && "Need pointer size in bytes.");
Size /= 8;
unsigned Reg = (++MOI)->getReg();
int64_t Imm = (++MOI)->getImm();
- Locs.push_back(Location(StackMaps::Location::Direct, Size, Reg, Imm));
+ Locs.push_back(Location(StackMaps::Location::Direct, Size,
+ getDwarfRegNum(Reg, TRI), Imm));
break;
}
case StackMaps::IndirectMemRefOp: {
@@ -98,7 +107,8 @@ StackMaps::parseOperand(MachineInstr::const_mop_iterator MOI,
assert(Size > 0 && "Need a valid size for indirect memory locations.");
unsigned Reg = (++MOI)->getReg();
int64_t Imm = (++MOI)->getImm();
- Locs.push_back(Location(StackMaps::Location::Indirect, Size, Reg, Imm));
+ Locs.push_back(Location(StackMaps::Location::Indirect, Size,
+ getDwarfRegNum(Reg, TRI), Imm));
break;
}
case StackMaps::ConstantOp: {
@@ -123,12 +133,18 @@ StackMaps::parseOperand(MachineInstr::const_mop_iterator MOI,
assert(TargetRegisterInfo::isPhysicalRegister(MOI->getReg()) &&
"Virtreg operands should have been rewritten before now.");
- const TargetRegisterClass *RC =
- AP.TM.getSubtargetImpl()->getRegisterInfo()->getMinimalPhysRegClass(
- MOI->getReg());
+ const TargetRegisterClass *RC = TRI->getMinimalPhysRegClass(MOI->getReg());
assert(!MOI->getSubReg() && "Physical subreg still around.");
+
+ unsigned Offset = 0;
+ unsigned RegNo = getDwarfRegNum(MOI->getReg(), TRI);
+ unsigned LLVMRegNo = TRI->getLLVMRegNum(RegNo, false);
+ unsigned SubRegIdx = TRI->getSubRegIndex(LLVMRegNo, MOI->getReg());
+ if (SubRegIdx)
+ Offset = TRI->getSubRegIdxOffset(SubRegIdx);
+
Locs.push_back(
- Location(Location::Register, RC->getSize(), MOI->getReg(), 0));
+ Location(Location::Register, RC->getSize(), RegNo, Offset));
return ++MOI;
}
@@ -138,14 +154,74 @@ StackMaps::parseOperand(MachineInstr::const_mop_iterator MOI,
return ++MOI;
}
-/// Go up the super-register chain until we hit a valid dwarf register number.
-static unsigned getDwarfRegNum(unsigned Reg, const TargetRegisterInfo *TRI) {
- int RegNo = TRI->getDwarfRegNum(Reg, false);
- for (MCSuperRegIterator SR(Reg, TRI); SR.isValid() && RegNo < 0; ++SR)
- RegNo = TRI->getDwarfRegNum(*SR, false);
+void StackMaps::print(raw_ostream &OS) {
+ const TargetRegisterInfo *TRI =
+ AP.MF ? AP.MF->getSubtarget().getRegisterInfo() : nullptr;
+ OS << WSMP << "callsites:\n";
+ for (const auto &CSI : CSInfos) {
+ const LocationVec &CSLocs = CSI.Locations;
+ const LiveOutVec &LiveOuts = CSI.LiveOuts;
- assert(RegNo >= 0 && "Invalid Dwarf register number.");
- return (unsigned) RegNo;
+ OS << WSMP << "callsite " << CSI.ID << "\n";
+ OS << WSMP << " has " << CSLocs.size() << " locations\n";
+
+ unsigned OperIdx = 0;
+ for (const auto &Loc : CSLocs) {
+ OS << WSMP << " Loc " << OperIdx << ": ";
+ switch (Loc.LocType) {
+ case Location::Unprocessed:
+ OS << "<Unprocessed operand>";
+ break;
+ case Location::Register:
+ OS << "Register ";
+ if (TRI)
+ OS << TRI->getName(Loc.Reg);
+ else
+ OS << Loc.Reg;
+ break;
+ case Location::Direct:
+ OS << "Direct ";
+ if (TRI)
+ OS << TRI->getName(Loc.Reg);
+ else
+ OS << Loc.Reg;
+ if (Loc.Offset)
+ OS << " + " << Loc.Offset;
+ break;
+ case Location::Indirect:
+ OS << "Indirect ";
+ if (TRI)
+ OS << TRI->getName(Loc.Reg);
+ else
+ OS << Loc.Reg;
+ OS << "+" << Loc.Offset;
+ break;
+ case Location::Constant:
+ OS << "Constant " << Loc.Offset;
+ break;
+ case Location::ConstantIndex:
+ OS << "Constant Index " << Loc.Offset;
+ break;
+ }
+ OS << " [encoding: .byte " << Loc.LocType << ", .byte " << Loc.Size
+ << ", .short " << Loc.Reg << ", .int " << Loc.Offset << "]\n";
+ OperIdx++;
+ }
+
+ OS << WSMP << " has " << LiveOuts.size() << " live-out registers\n";
+
+ OperIdx = 0;
+ for (const auto &LO : LiveOuts) {
+ OS << WSMP << " LO " << OperIdx << ": ";
+ if (TRI)
+ OS << TRI->getName(LO.Reg);
+ else
+ OS << LO.Reg;
+ OS << " [encoding: .short " << LO.RegNo << ", .byte 0, .byte "
+ << LO.Size << "]\n";
+ OperIdx++;
+ }
+ }
}
/// Create a live-out register record for the given register Reg.
@@ -161,7 +237,7 @@ StackMaps::createLiveOutReg(unsigned Reg, const TargetRegisterInfo *TRI) const {
StackMaps::LiveOutVec
StackMaps::parseRegisterLiveOutMask(const uint32_t *Mask) const {
assert(Mask && "No register mask specified");
- const TargetRegisterInfo *TRI = AP.TM.getSubtargetImpl()->getRegisterInfo();
+ const TargetRegisterInfo *TRI = AP.MF->getSubtarget().getRegisterInfo();
LiveOutVec LiveOuts;
// Create a LiveOutReg for each bit that is set in the register mask.
@@ -197,9 +273,9 @@ void StackMaps::recordStackMapOpers(const MachineInstr &MI, uint64_t ID,
MachineInstr::const_mop_iterator MOE,
bool recordResult) {
- MCContext &OutContext = AP.OutStreamer.getContext();
- MCSymbol *MILabel = OutContext.CreateTempSymbol();
- AP.OutStreamer.EmitLabel(MILabel);
+ MCContext &OutContext = AP.OutStreamer->getContext();
+ MCSymbol *MILabel = OutContext.createTempSymbol();
+ AP.OutStreamer->EmitLabel(MILabel);
LocationVec Locations;
LiveOutVec LiveOuts;
@@ -294,9 +370,8 @@ void StackMaps::recordStatepoint(const MachineInstr &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);
+ recordStackMapOpers(MI, opers.getID(), MI.operands_begin() + StartIdx,
+ MI.operands_end(), false);
}
/// Emit the stackmap header.
@@ -384,16 +459,13 @@ void StackMaps::emitConstantPoolEntries(MCStreamer &OS) {
/// 0x3, Indirect, [Reg + Offset] (spilled value)
/// 0x4, Constant, Offset (small constant)
/// 0x5, ConstIndex, Constants[Offset] (large constant)
-void StackMaps::emitCallsiteEntries(MCStreamer &OS,
- const TargetRegisterInfo *TRI) {
+void StackMaps::emitCallsiteEntries(MCStreamer &OS) {
+ DEBUG(print(dbgs()));
// Callsite entries.
- DEBUG(dbgs() << WSMP << "callsites:\n");
for (const auto &CSI : CSInfos) {
const LocationVec &CSLocs = CSI.Locations;
const LiveOutVec &LiveOuts = CSI.LiveOuts;
- DEBUG(dbgs() << WSMP << "callsite " << CSI.ID << "\n");
-
// Verify stack map entry. It's better to communicate a problem to the
// runtime than crash in case of in-process compilation. Currently, we do
// simple overflow checks, but we may eventually communicate other
@@ -414,83 +486,20 @@ void StackMaps::emitCallsiteEntries(MCStreamer &OS,
// Reserved for flags.
OS.EmitIntValue(0, 2);
-
- DEBUG(dbgs() << WSMP << " has " << CSLocs.size() << " locations\n");
-
OS.EmitIntValue(CSLocs.size(), 2);
- unsigned OperIdx = 0;
for (const auto &Loc : CSLocs) {
- unsigned RegNo = 0;
- int Offset = Loc.Offset;
- if(Loc.Reg) {
- RegNo = getDwarfRegNum(Loc.Reg, TRI);
-
- // If this is a register location, put the subregister byte offset in
- // the location offset.
- if (Loc.LocType == Location::Register) {
- assert(!Loc.Offset && "Register location should have zero offset");
- unsigned LLVMRegNo = TRI->getLLVMRegNum(RegNo, false);
- unsigned SubRegIdx = TRI->getSubRegIndex(LLVMRegNo, Loc.Reg);
- if (SubRegIdx)
- Offset = TRI->getSubRegIdxOffset(SubRegIdx);
- }
- }
- else {
- assert(Loc.LocType != Location::Register &&
- "Missing location register");
- }
-
- DEBUG(dbgs() << WSMP << " Loc " << OperIdx << ": ";
- switch (Loc.LocType) {
- case Location::Unprocessed:
- dbgs() << "<Unprocessed operand>";
- break;
- case Location::Register:
- dbgs() << "Register " << TRI->getName(Loc.Reg);
- break;
- case Location::Direct:
- dbgs() << "Direct " << TRI->getName(Loc.Reg);
- if (Loc.Offset)
- dbgs() << " + " << Loc.Offset;
- break;
- case Location::Indirect:
- dbgs() << "Indirect " << TRI->getName(Loc.Reg)
- << " + " << Loc.Offset;
- break;
- case Location::Constant:
- dbgs() << "Constant " << Loc.Offset;
- break;
- case Location::ConstantIndex:
- dbgs() << "Constant Index " << Loc.Offset;
- break;
- }
- dbgs() << " [encoding: .byte " << Loc.LocType
- << ", .byte " << Loc.Size
- << ", .short " << RegNo
- << ", .int " << Offset << "]\n";
- );
-
OS.EmitIntValue(Loc.LocType, 1);
OS.EmitIntValue(Loc.Size, 1);
- OS.EmitIntValue(RegNo, 2);
- OS.EmitIntValue(Offset, 4);
- OperIdx++;
+ OS.EmitIntValue(Loc.Reg, 2);
+ OS.EmitIntValue(Loc.Offset, 4);
}
- DEBUG(dbgs() << WSMP << " has " << LiveOuts.size()
- << " live-out registers\n");
-
// Num live-out registers and padding to align to 4 byte.
OS.EmitIntValue(0, 2);
OS.EmitIntValue(LiveOuts.size(), 2);
- OperIdx = 0;
for (const auto &LO : LiveOuts) {
- DEBUG(dbgs() << WSMP << " LO " << OperIdx << ": "
- << TRI->getName(LO.Reg)
- << " [encoding: .short " << LO.RegNo
- << ", .byte 0, .byte " << LO.Size << "]\n");
OS.EmitIntValue(LO.RegNo, 2);
OS.EmitIntValue(0, 1);
OS.EmitIntValue(LO.Size, 1);
@@ -511,24 +520,23 @@ void StackMaps::serializeToStackMapSection() {
if (CSInfos.empty())
return;
- MCContext &OutContext = AP.OutStreamer.getContext();
- MCStreamer &OS = AP.OutStreamer;
- const TargetRegisterInfo *TRI = AP.TM.getSubtargetImpl()->getRegisterInfo();
+ MCContext &OutContext = AP.OutStreamer->getContext();
+ MCStreamer &OS = *AP.OutStreamer;
// Create the section.
- const MCSection *StackMapSection =
- OutContext.getObjectFileInfo()->getStackMapSection();
+ MCSection *StackMapSection =
+ OutContext.getObjectFileInfo()->getStackMapSection();
OS.SwitchSection(StackMapSection);
// Emit a dummy symbol to force section inclusion.
- OS.EmitLabel(OutContext.GetOrCreateSymbol(Twine("__LLVM_StackMaps")));
+ OS.EmitLabel(OutContext.getOrCreateSymbol(Twine("__LLVM_StackMaps")));
// Serialize data.
DEBUG(dbgs() << "********** Stack Map Output **********\n");
emitStackmapHeader(OS);
emitFunctionFrameRecords(OS);
emitConstantPoolEntries(OS);
- emitCallsiteEntries(OS, TRI);
+ emitCallsiteEntries(OS);
OS.AddBlankLine();
// Clean up.
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 04:22:47 +0000