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-rw-r--r--lib/CodeGen/AsmPrinter/AsmPrinter.cpp128
1 files changed, 110 insertions, 18 deletions
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 9bbc77b3056b..7070451e3330 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -12,10 +12,10 @@
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/AsmPrinter.h"
-#include "AsmPrinterHandler.h"
#include "CodeViewDebug.h"
#include "DwarfDebug.h"
#include "DwarfException.h"
+#include "WasmException.h"
#include "WinCFGuard.h"
#include "WinException.h"
#include "llvm/ADT/APFloat.h"
@@ -32,8 +32,10 @@
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/EHPersonalities.h"
#include "llvm/Analysis/OptimizationRemarkEmitter.h"
+#include "llvm/BinaryFormat/COFF.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/CodeGen/AsmPrinterHandler.h"
#include "llvm/CodeGen/GCMetadata.h"
#include "llvm/CodeGen/GCMetadataPrinter.h"
#include "llvm/CodeGen/GCStrategy.h"
@@ -52,6 +54,7 @@
#include "llvm/CodeGen/MachineModuleInfoImpls.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"
+#include "llvm/CodeGen/StackMaps.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetLowering.h"
@@ -260,7 +263,7 @@ bool AsmPrinter::doInitialization(Module &M) {
// use the directive, where it would need the same conditionalization
// anyway.
const Triple &Target = TM.getTargetTriple();
- OutStreamer->EmitVersionForTarget(Target);
+ OutStreamer->EmitVersionForTarget(Target, M.getSDKVersion());
// Allow the target to emit any magic that it wants at the start of the file.
EmitStartOfAsmFile(M);
@@ -355,7 +358,7 @@ bool AsmPrinter::doInitialization(Module &M) {
}
break;
case ExceptionHandling::Wasm:
- // TODO to prevent warning
+ ES = new WasmException(this);
break;
}
if (ES)
@@ -363,7 +366,7 @@ bool AsmPrinter::doInitialization(Module &M) {
DWARFGroupName, DWARFGroupDescription));
if (mdconst::extract_or_null<ConstantInt>(
- MMI->getModule()->getModuleFlag("cfguard")))
+ MMI->getModule()->getModuleFlag("cfguardtable")))
Handlers.push_back(HandlerInfo(new WinCFGuard(this), CFGuardName,
CFGuardDescription, DWARFGroupName,
DWARFGroupDescription));
@@ -627,8 +630,7 @@ void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
///
/// \p Value - The value to emit.
/// \p Size - The size of the integer (in bytes) to emit.
-void AsmPrinter::EmitDebugThreadLocal(const MCExpr *Value,
- unsigned Size) const {
+void AsmPrinter::EmitDebugValue(const MCExpr *Value, unsigned Size) const {
OutStreamer->EmitValue(Value, Size);
}
@@ -749,18 +751,30 @@ static bool emitComments(const MachineInstr &MI, raw_ostream &CommentOS,
const MachineFrameInfo &MFI = MF->getFrameInfo();
bool Commented = false;
+ auto getSize =
+ [&MFI](const SmallVectorImpl<const MachineMemOperand *> &Accesses) {
+ unsigned Size = 0;
+ for (auto A : Accesses)
+ if (MFI.isSpillSlotObjectIndex(
+ cast<FixedStackPseudoSourceValue>(A->getPseudoValue())
+ ->getFrameIndex()))
+ Size += A->getSize();
+ return Size;
+ };
+
// We assume a single instruction only has a spill or reload, not
// both.
const MachineMemOperand *MMO;
+ SmallVector<const MachineMemOperand *, 2> Accesses;
if (TII->isLoadFromStackSlotPostFE(MI, FI)) {
if (MFI.isSpillSlotObjectIndex(FI)) {
MMO = *MI.memoperands_begin();
CommentOS << MMO->getSize() << "-byte Reload";
Commented = true;
}
- } else if (TII->hasLoadFromStackSlot(MI, MMO, FI)) {
- if (MFI.isSpillSlotObjectIndex(FI)) {
- CommentOS << MMO->getSize() << "-byte Folded Reload";
+ } else if (TII->hasLoadFromStackSlot(MI, Accesses)) {
+ if (auto Size = getSize(Accesses)) {
+ CommentOS << Size << "-byte Folded Reload";
Commented = true;
}
} else if (TII->isStoreToStackSlotPostFE(MI, FI)) {
@@ -769,9 +783,9 @@ static bool emitComments(const MachineInstr &MI, raw_ostream &CommentOS,
CommentOS << MMO->getSize() << "-byte Spill";
Commented = true;
}
- } else if (TII->hasStoreToStackSlot(MI, MMO, FI)) {
- if (MFI.isSpillSlotObjectIndex(FI)) {
- CommentOS << MMO->getSize() << "-byte Folded Spill";
+ } else if (TII->hasStoreToStackSlot(MI, Accesses)) {
+ if (auto Size = getSize(Accesses)) {
+ CommentOS << Size << "-byte Folded Spill";
Commented = true;
}
}
@@ -1066,6 +1080,10 @@ void AsmPrinter::EmitFunctionBody() {
++NumInstsInFunction;
}
+ // If there is a pre-instruction symbol, emit a label for it here.
+ if (MCSymbol *S = MI.getPreInstrSymbol())
+ OutStreamer->EmitLabel(S);
+
if (ShouldPrintDebugScopes) {
for (const HandlerInfo &HI : Handlers) {
NamedRegionTimer T(HI.TimerName, HI.TimerDescription,
@@ -1117,6 +1135,10 @@ void AsmPrinter::EmitFunctionBody() {
break;
}
+ // If there is a post-instruction symbol, emit a label for it here.
+ if (MCSymbol *S = MI.getPostInstrSymbol())
+ OutStreamer->EmitLabel(S);
+
if (ShouldPrintDebugScopes) {
for (const HandlerInfo &HI : Handlers) {
NamedRegionTimer T(HI.TimerName, HI.TimerDescription,
@@ -1394,6 +1416,33 @@ bool AsmPrinter::doFinalization(Module &M) {
}
}
+ if (TM.getTargetTriple().isOSBinFormatCOFF()) {
+ MachineModuleInfoCOFF &MMICOFF =
+ MMI->getObjFileInfo<MachineModuleInfoCOFF>();
+
+ // Output stubs for external and common global variables.
+ MachineModuleInfoCOFF::SymbolListTy Stubs = MMICOFF.GetGVStubList();
+ if (!Stubs.empty()) {
+ const DataLayout &DL = M.getDataLayout();
+
+ for (const auto &Stub : Stubs) {
+ SmallString<256> SectionName = StringRef(".rdata$");
+ SectionName += Stub.first->getName();
+ OutStreamer->SwitchSection(OutContext.getCOFFSection(
+ SectionName,
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
+ COFF::IMAGE_SCN_LNK_COMDAT,
+ SectionKind::getReadOnly(), Stub.first->getName(),
+ COFF::IMAGE_COMDAT_SELECT_ANY));
+ EmitAlignment(Log2_32(DL.getPointerSize()));
+ OutStreamer->EmitSymbolAttribute(Stub.first, MCSA_Global);
+ OutStreamer->EmitLabel(Stub.first);
+ OutStreamer->EmitSymbolValue(Stub.second.getPointer(),
+ DL.getPointerSize());
+ }
+ }
+ }
+
// Finalize debug and EH information.
for (const HandlerInfo &HI : Handlers) {
NamedRegionTimer T(HI.TimerName, HI.TimerDescription, HI.TimerGroupName,
@@ -1450,6 +1499,9 @@ bool AsmPrinter::doFinalization(Module &M) {
// Emit llvm.ident metadata in an '.ident' directive.
EmitModuleIdents(M);
+ // Emit bytes for llvm.commandline metadata.
+ EmitModuleCommandLines(M);
+
// Emit __morestack address if needed for indirect calls.
if (MMI->usesMorestackAddr()) {
unsigned Align = 1;
@@ -1534,7 +1586,8 @@ bool AsmPrinter::doFinalization(Module &M) {
// Emit address-significance attributes for all globals.
OutStreamer->EmitAddrsig();
for (const GlobalValue &GV : M.global_values())
- if (!GV.isThreadLocal() && !GV.getName().startswith("llvm.") &&
+ if (!GV.use_empty() && !GV.isThreadLocal() &&
+ !GV.hasDLLImportStorageClass() && !GV.getName().startswith("llvm.") &&
!GV.hasAtLeastLocalUnnamedAddr())
OutStreamer->EmitAddrsigSym(getSymbol(&GV));
}
@@ -1958,6 +2011,29 @@ void AsmPrinter::EmitModuleIdents(Module &M) {
}
}
+void AsmPrinter::EmitModuleCommandLines(Module &M) {
+ MCSection *CommandLine = getObjFileLowering().getSectionForCommandLines();
+ if (!CommandLine)
+ return;
+
+ const NamedMDNode *NMD = M.getNamedMetadata("llvm.commandline");
+ if (!NMD || !NMD->getNumOperands())
+ return;
+
+ OutStreamer->PushSection();
+ OutStreamer->SwitchSection(CommandLine);
+ OutStreamer->EmitZeros(1);
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ const MDNode *N = NMD->getOperand(i);
+ assert(N->getNumOperands() == 1 &&
+ "llvm.commandline metadata entry can have only one operand");
+ const MDString *S = cast<MDString>(N->getOperand(0));
+ OutStreamer->EmitBytes(S->getString());
+ OutStreamer->EmitZeros(1);
+ }
+ OutStreamer->PopSection();
+}
+
//===--------------------------------------------------------------------===//
// Emission and print routines
//
@@ -2927,11 +3003,6 @@ GCMetadataPrinter *AsmPrinter::GetOrCreateGCPrinter(GCStrategy &S) {
if (!S.usesMetadata())
return nullptr;
- assert(!S.useStatepoints() && "statepoints do not currently support custom"
- " stackmap formats, please see the documentation for a description of"
- " the default format. If you really need a custom serialized format,"
- " please file a bug");
-
gcp_map_type &GCMap = getGCMap(GCMetadataPrinters);
gcp_map_type::iterator GCPI = GCMap.find(&S);
if (GCPI != GCMap.end())
@@ -2952,6 +3023,27 @@ GCMetadataPrinter *AsmPrinter::GetOrCreateGCPrinter(GCStrategy &S) {
report_fatal_error("no GCMetadataPrinter registered for GC: " + Twine(Name));
}
+void AsmPrinter::emitStackMaps(StackMaps &SM) {
+ GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>();
+ assert(MI && "AsmPrinter didn't require GCModuleInfo?");
+ bool NeedsDefault = false;
+ if (MI->begin() == MI->end())
+ // No GC strategy, use the default format.
+ NeedsDefault = true;
+ else
+ for (auto &I : *MI) {
+ if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*I))
+ if (MP->emitStackMaps(SM, *this))
+ continue;
+ // The strategy doesn't have printer or doesn't emit custom stack maps.
+ // Use the default format.
+ NeedsDefault = true;
+ }
+
+ if (NeedsDefault)
+ SM.serializeToStackMapSection();
+}
+
/// Pin vtable to this file.
AsmPrinterHandler::~AsmPrinterHandler() = default;
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-12 01:34:24 +0000