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CodeGen: Add a dwo output file argument to addPassesToEmitFile and hook it up to dwo output.

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Part of PR37466.

Differential Revision: https://reviews.llvm.org/D47089

llvm-svn: 332881
This commit is contained in:
Peter Collingbourne 2018-05-21 20:16:41 +00:00
parent fd0e6cf515
commit 7f9b89f0e2
12 changed files with 79 additions and 45 deletions
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8
include/llvm/Target/TargetMachine.h
View File

@ -252,7 +252,7 @@ public:
/// \p MMI is an optional parameter that, if set to non-nullptr,
/// will be used to set the MachineModuloInfo for this PM.
virtual bool addPassesToEmitFile(PassManagerBase &, raw_pwrite_stream &,
CodeGenFileType,
raw_pwrite_stream *, CodeGenFileType,
bool /*DisableVerify*/ = true,
MachineModuleInfo *MMI = nullptr) {
return true;
@ -321,7 +321,8 @@ public:
/// \p MMI is an optional parameter that, if set to non-nullptr,
/// will be used to set the MachineModuloInfofor this PM.
bool addPassesToEmitFile(PassManagerBase &PM, raw_pwrite_stream &Out,
CodeGenFileType FileType, bool DisableVerify = true,
raw_pwrite_stream *DwoOut, CodeGenFileType FileType,
bool DisableVerify = true,
MachineModuleInfo *MMI = nullptr) override;
/// Add passes to the specified pass manager to get machine code emitted with
@ -341,7 +342,8 @@ public:
/// Adds an AsmPrinter pass to the pipeline that prints assembly or
/// machine code from the MI representation.
bool addAsmPrinter(PassManagerBase &PM, raw_pwrite_stream &Out,
CodeGenFileType FileTYpe, MCContext &Context);
raw_pwrite_stream *DwoOut, CodeGenFileType FileTYpe,
MCContext &Context);
};
} // end namespace llvm

15
lib/CodeGen/LLVMTargetMachine.cpp
View File

@ -121,8 +121,10 @@ addPassesToGenerateCode(LLVMTargetMachine *TM, PassManagerBase &PM,
}
bool LLVMTargetMachine::addAsmPrinter(PassManagerBase &PM,
raw_pwrite_stream &Out, CodeGenFileType FileType,
MCContext &Context) {
raw_pwrite_stream &Out,
raw_pwrite_stream *DwoOut,
CodeGenFileType FileType,
MCContext &Context) {
if (Options.MCOptions.MCSaveTempLabels)
Context.setAllowTemporaryLabels(false);
@ -168,8 +170,9 @@ bool LLVMTargetMachine::addAsmPrinter(PassManagerBase &PM,
Triple T(getTargetTriple().str());
AsmStreamer.reset(getTarget().createMCObjectStreamer(
T, Context, std::unique_ptr<MCAsmBackend>(MAB),
MAB->createObjectWriter(Out), std::unique_ptr<MCCodeEmitter>(MCE), STI,
Options.MCOptions.MCRelaxAll,
DwoOut ? MAB->createDwoObjectWriter(Out, *DwoOut)
: MAB->createObjectWriter(Out),
std::unique_ptr<MCCodeEmitter>(MCE), STI, Options.MCOptions.MCRelaxAll,
Options.MCOptions.MCIncrementalLinkerCompatible,
/*DWARFMustBeAtTheEnd*/ true));
break;
@ -193,6 +196,7 @@ bool LLVMTargetMachine::addAsmPrinter(PassManagerBase &PM,
bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
raw_pwrite_stream &Out,
raw_pwrite_stream *DwoOut,
CodeGenFileType FileType,
bool DisableVerify,
MachineModuleInfo *MMI) {
@ -203,7 +207,8 @@ bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
if (!Context)
return true;
if (WillCompleteCodeGenPipeline && addAsmPrinter(PM, Out, FileType, *Context))
if (WillCompleteCodeGenPipeline &&
addAsmPrinter(PM, Out, DwoOut, FileType, *Context))
return true;
PM.add(createFreeMachineFunctionPass());

2
lib/CodeGen/ParallelCG.cpp
View File

@ -30,7 +30,7 @@ static void codegen(Module *M, llvm::raw_pwrite_stream &OS,
TargetMachine::CodeGenFileType FileType) {
std::unique_ptr<TargetMachine> TM = TMFactory();
legacy::PassManager CodeGenPasses;
if (TM->addPassesToEmitFile(CodeGenPasses, OS, FileType))
if (TM->addPassesToEmitFile(CodeGenPasses, OS, nullptr, FileType))
report_fatal_error("Failed to setup codegen");
CodeGenPasses.run(*M);
}

5
lib/LTO/LTOBackend.cpp
View File

@ -304,7 +304,7 @@ void codegenWithSplitDwarf(Config &Conf, TargetMachine *TM,
TM->Options.MCOptions.SplitDwarfFile = DwarfFile.str().str();
legacy::PassManager CodeGenPasses;
if (TM->addPassesToEmitFile(CodeGenPasses, OS, Conf.CGFileType))
if (TM->addPassesToEmitFile(CodeGenPasses, OS, nullptr, Conf.CGFileType))
report_fatal_error("Failed to setup codegen");
CodeGenPasses.run(Mod);
@ -355,7 +355,8 @@ void codegen(Config &Conf, TargetMachine *TM, AddStreamFn AddStream,
auto Stream = AddStream(Task);
legacy::PassManager CodeGenPasses;
if (TM->addPassesToEmitFile(CodeGenPasses, *Stream->OS, Conf.CGFileType))
if (TM->addPassesToEmitFile(CodeGenPasses, *Stream->OS, nullptr,
Conf.CGFileType))
report_fatal_error("Failed to setup codegen");
CodeGenPasses.run(Mod);
}

2
lib/LTO/ThinLTOCodeGenerator.cpp
View File

@ -268,7 +268,7 @@ std::unique_ptr<MemoryBuffer> codegenModule(Module &TheModule,
PM.add(createObjCARCContractPass());
// Setup the codegen now.
if (TM.addPassesToEmitFile(PM, OS, TargetMachine::CGFT_ObjectFile,
if (TM.addPassesToEmitFile(PM, OS, nullptr, TargetMachine::CGFT_ObjectFile,
/* DisableVerify */ true))
report_fatal_error("Failed to setup codegen");

2
lib/Target/TargetMachineC.cpp
View File

@ -196,7 +196,7 @@ static LLVMBool LLVMTargetMachineEmit(LLVMTargetMachineRef T, LLVMModuleRef M,
ft = TargetMachine::CGFT_ObjectFile;
break;
}
if (TM->addPassesToEmitFile(pass, OS, ft)) {
if (TM->addPassesToEmitFile(pass, OS, nullptr, ft)) {
error = "TargetMachine can't emit a file of this type";
*ErrorMessage = strdup(error.c_str());
return true;

48
test/CodeGen/X86/dwarf-headers.ll
View File

@ -2,17 +2,21 @@
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=SINGLE-4
; RUN: llc -split-dwarf-file=foo.dwo -dwarf-version=4 -generate-type-units \
; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \
; RUN: -dwarf-version=4 -generate-type-units \
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=SPLIT-4
; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=O-4
; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s --check-prefix=DWO-4
; RUN: llc -dwarf-version=5 -generate-type-units \
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=SINGLE-5
; RUN: llc -split-dwarf-file=foo.dwo -dwarf-version=5 -generate-type-units \
; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \
; RUN: -dwarf-version=5 -generate-type-units \
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=SPLIT-5
; RUN: | llvm-dwarfdump -v - | FileCheck %s --check-prefix=O-5
; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s --check-prefix=DWO-5
; Looking for DWARF headers to be generated correctly.
; There are 7 variants: v4 CU, v4 TU, v5 (normal/skeleton/split) CU,
@ -42,17 +46,17 @@
; Verify the v4 split headers.
;
; SPLIT-4: .debug_info contents:
; SPLIT-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004 abbr_offset
; SPLIT-4: 0x0000000b: DW_TAG_compile_unit
; O-4: .debug_info contents:
; O-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004 abbr_offset
; O-4: 0x0000000b: DW_TAG_compile_unit
;
; SPLIT-4: .debug_info.dwo contents:
; SPLIT-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004 abbr_offset
; SPLIT-4: 0x0000000b: DW_TAG_compile_unit
; DWO-4: .debug_info.dwo contents:
; DWO-4: 0x00000000: Compile Unit: {{.*}} version = 0x0004 abbr_offset
; DWO-4: 0x0000000b: DW_TAG_compile_unit
;
; SPLIT-4: .debug_types.dwo contents:
; SPLIT-4: 0x00000000: Type Unit: {{.*}} version = 0x0004 abbr_offset
; SPLIT-4: 0x00000017: DW_TAG_type_unit
; DWO-4: .debug_types.dwo contents:
; DWO-4: 0x00000000: Type Unit: {{.*}} version = 0x0004 abbr_offset
; DWO-4: 0x00000017: DW_TAG_type_unit
; Verify the v5 non-split headers.
;
@ -67,18 +71,18 @@
; Verify the v5 split headers.
;
; SPLIT-5: .debug_info contents:
; SPLIT-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005 unit_type = DW_UT_skeleton abbr_offset
; SPLIT-5: 0x0000000c: DW_TAG_compile_unit
; O-5: .debug_info contents:
; O-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005 unit_type = DW_UT_skeleton abbr_offset
; O-5: 0x0000000c: DW_TAG_compile_unit
;
; SPLIT-5: .debug_info.dwo contents:
; SPLIT-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005 unit_type = DW_UT_split_compile abbr_offset
; SPLIT-5: 0x0000000c: DW_TAG_compile_unit
; DWO-5: .debug_info.dwo contents:
; DWO-5: 0x00000000: Compile Unit: {{.*}} version = 0x0005 unit_type = DW_UT_split_compile abbr_offset
; DWO-5: 0x0000000c: DW_TAG_compile_unit
;
; FIXME: V5 wants type units in .debug_info.dwo not .debug_types.dwo.
; SPLIT-5: .debug_types.dwo contents:
; SPLIT-5: 0x00000000: Type Unit: {{.*}} version = 0x0005 unit_type = DW_UT_split_type abbr_offset
; SPLIT-5: 0x00000018: DW_TAG_type_unit
; DWO-5: .debug_types.dwo contents:
; DWO-5: 0x00000000: Type Unit: {{.*}} version = 0x0005 unit_type = DW_UT_split_type abbr_offset
; DWO-5: 0x00000018: DW_TAG_type_unit
; ModuleID = 't.cpp'

7
test/CodeGen/X86/dwarf-split-line-1.ll
View File

@ -1,9 +1,10 @@
; Verify that split type units with no source locations don't have a
; DW_AT_stmt_list attribute, and the .debug_line.dwo section is suppressed.
; RUN: llc -split-dwarf-file=foo.dwo -dwarf-version=5 -generate-type-units \
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
; RUN: | llvm-dwarfdump -v - | FileCheck %s
; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \
; RUN: -dwarf-version=5 -generate-type-units \
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s
; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s
; FIXME: V5 wants type units in .debug_info.dwo not .debug_types.dwo.
; CHECK-NOT: .debug_line.dwo

7
test/CodeGen/X86/dwarf-split-line-2.ll
View File

@ -2,9 +2,10 @@
; one without, the one without locations doesn't have a DW_AT_stmt_list
; attribute, but the other one does and the .debug_line.dwo section is present.
; RUN: llc -split-dwarf-file=foo.dwo -dwarf-version=5 -generate-type-units \
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s \
; RUN: | llvm-dwarfdump -v - | FileCheck %s
; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \
; RUN: -dwarf-version=5 -generate-type-units \
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s
; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s
; Currently the no-source-location type comes out first.
; FIXME: V5 wants type units in .debug_info.dwo not .debug_types.dwo.

22
tools/llc/llc.cpp
View File

@ -66,6 +66,11 @@ InputLanguage("x", cl::desc("Input language ('ir' or 'mir')"));
static cl::opt<std::string>
OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"));
static cl::opt<std::string>
SplitDwarfOutputFile("split-dwarf-output",
cl::desc(".dwo output filename"),
cl::value_desc("filename"));
static cl::opt<unsigned>
TimeCompilations("time-compilations", cl::Hidden, cl::init(1u),
cl::value_desc("N"),
@ -463,6 +468,17 @@ static int compileModule(char **argv, LLVMContext &Context) {
GetOutputStream(TheTarget->getName(), TheTriple.getOS(), argv[0]);
if (!Out) return 1;
std::unique_ptr<ToolOutputFile> DwoOut;
if (!SplitDwarfOutputFile.empty()) {
std::error_code EC;
DwoOut = llvm::make_unique<ToolOutputFile>(SplitDwarfOutputFile, EC,
sys::fs::F_None);
if (EC) {
errs() << EC.message() << '\n';
return 1;
}
}
// Build up all of the passes that we want to do to the module.
legacy::PassManager PM;
@ -541,7 +557,9 @@ static int compileModule(char **argv, LLVMContext &Context) {
TPC.setInitialized();
PM.add(createPrintMIRPass(*OS));
PM.add(createFreeMachineFunctionPass());
} else if (Target->addPassesToEmitFile(PM, *OS, FileType, NoVerify, MMI)) {
} else if (Target->addPassesToEmitFile(PM, *OS,
DwoOut ? &DwoOut->os() : nullptr,
FileType, NoVerify, MMI)) {
errs() << argv0 << ": target does not support generation of this"
<< " file type!\n";
return 1;
@ -598,6 +616,8 @@ static int compileModule(char **argv, LLVMContext &Context) {
// Declare success.
Out->keep();
if (DwoOut)
DwoOut->keep();
return 0;
}

4
tools/llvm-exegesis/lib/Assembler.cpp
View File

@ -167,8 +167,8 @@ void assembleToStream(std::unique_ptr<llvm::LLVMTargetMachine> TM,
TPC->setInitialized();
// AsmPrinter is responsible for generating the assembly into AsmBuffer.
if (TM->addAsmPrinter(PM, AsmStream, llvm::TargetMachine::CGFT_ObjectFile,
MCContext))
if (TM->addAsmPrinter(PM, AsmStream, nullptr,
llvm::TargetMachine::CGFT_ObjectFile, MCContext))
llvm::report_fatal_error("Cannot add AsmPrinter passes");
PM.run(*Module); // Run all the passes

2
tools/llvm-isel-fuzzer/llvm-isel-fuzzer.cpp
View File

@ -99,7 +99,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
TargetLibraryInfoImpl TLII(TM->getTargetTriple());
PM.add(new TargetLibraryInfoWrapperPass(TLII));
raw_null_ostream OS;
TM->addPassesToEmitFile(PM, OS, TargetMachine::CGFT_Null);
TM->addPassesToEmitFile(PM, OS, nullptr, TargetMachine::CGFT_Null);
PM.run(*M);
return 0;