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[Remarks] Emit a section containing remark diagnostics metadata

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A section containing metadata on remark diagnostics will be emitted if
the flag (-mllvm) -remarks-section is present.

For now, the metadata is:

* a magic number for remarks: "REMARKS\0"
* the version number: a little-endian uint64_t
* the absolute file path to the serialized remark diagnostics: a
  null-terminated string.

Differential Revision: https://reviews.llvm.org/D59571

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@357043 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Francis Visoiu Mistrih
2019-03-27 01:13:59 +00:00
parent 7b01616565
commit 0c810b46bd
8 changed files with 108 additions and 0 deletions
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lib/MC/MCObjectFileInfo.cpp
+6
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@@ -290,6 +290,9 @@ void MCObjectFileInfo::initMachOMCObjectFileInfo(const Triple &T) {
FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps",
0, SectionKind::getMetadata());
RemarksSection = Ctx->getMachOSection(
"__LLVM", "__remarks", MachO::S_ATTR_DEBUG, SectionKind::getMetadata());
TLSExtraDataSection = TLSTLVSection;
}
@@ -475,6 +478,9 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(const Triple &T, bool Large) {
Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
StackSizesSection = Ctx->getELFSection(".stack_sizes", ELF::SHT_PROGBITS, 0);
RemarksSection =
Ctx->getELFSection(".remarks", ELF::SHT_PROGBITS, ELF::SHF_EXCLUDE);
}
void MCObjectFileInfo::initCOFFMCObjectFileInfo(const Triple &T) {