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Add hash of source files in debug info

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* Adds either an MD5 or SHA1 hash to the debug info.
* Adds new unstable option `-Z src-hash-algorithm` to control the hashing algorithm.
This commit is contained in:
Arlo Siemsen 2020-03-30 22:17:15 -07:00
parent 537ccdf3ac
commit f86b078e2d
19 changed files with 332 additions and 92 deletions
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29
src/rustllvm/RustWrapper.cpp
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@ -640,6 +640,25 @@ static DICompileUnit::DebugEmissionKind fromRust(LLVMRustDebugEmissionKind Kind)
}
}
enum class LLVMRustChecksumKind {
None,
MD5,
SHA1,
};
static Optional<DIFile::ChecksumKind> fromRust(LLVMRustChecksumKind Kind) {
switch (Kind) {
case LLVMRustChecksumKind::None:
return None;
case LLVMRustChecksumKind::MD5:
return DIFile::ChecksumKind::CSK_MD5;
case LLVMRustChecksumKind::SHA1:
return DIFile::ChecksumKind::CSK_SHA1;
default:
report_fatal_error("bad ChecksumKind.");
}
}
extern "C" uint32_t LLVMRustDebugMetadataVersion() {
return DEBUG_METADATA_VERSION;
}
@ -686,9 +705,15 @@ extern "C" LLVMMetadataRef LLVMRustDIBuilderCreateCompileUnit(
extern "C" LLVMMetadataRef LLVMRustDIBuilderCreateFile(
LLVMRustDIBuilderRef Builder,
const char *Filename, size_t FilenameLen,
const char *Directory, size_t DirectoryLen) {
const char *Directory, size_t DirectoryLen, LLVMRustChecksumKind CSKind,
const char *Checksum, size_t ChecksumLen) {
Optional<DIFile::ChecksumKind> llvmCSKind = fromRust(CSKind);
Optional<DIFile::ChecksumInfo<StringRef>> CSInfo{};
if (llvmCSKind)
CSInfo.emplace(*llvmCSKind, StringRef{Checksum, ChecksumLen});
return wrap(Builder->createFile(StringRef(Filename, FilenameLen),
StringRef(Directory, DirectoryLen)));
StringRef(Directory, DirectoryLen),
CSInfo));
}
extern "C" LLVMMetadataRef