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[wasm-ld] Switch to xxh3_64bits

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Similar to recent changes to ELF (e.g., D154813), Mach-O, and COFF to
improve hashing performance.

Reviewed By: dschuff

Differential Revision: https://reviews.llvm.org/D155752
This commit is contained in:
Fangrui Song
2023-07-20 10:47:47 -07:00
parent 8e0715e40e
commit a3622ac80b
3 changed files with 4 additions and 4 deletions
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4
lld/test/wasm/build-id.test
View File

@@ -43,8 +43,8 @@ foo:
# DEFAULT: Contents of section build_id:
# DEFAULT-NEXT: 0000 10cdbf99 f76b1f5e ebb2f36a 1bde1d6c .....k.^...j...l
# DEFAULT-NEXT: 0010 01
# DEFAULT-NEXT: 0000 100e228e 4e2fa853 6393b43d ed1d4676
# DEFAULT-NEXT: 0010 13 .
# SHA1: Contents of section build_id:
# SHA1-NEXT: 0000 14ad22e8 54d72438 94af85de 3c5592bd ..".T.$8....<U..

2
lld/wasm/InputChunks.cpp
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@@ -451,7 +451,7 @@ void MergeInputChunk::splitStrings(ArrayRef<uint8_t> data) {
fatal(toString(this) + ": string is not null terminated");
size_t size = end + 1;
pieces.emplace_back(off, xxHash64(s.substr(0, size)), true);
pieces.emplace_back(off, xxh3_64bits(s.substr(0, size)), true);
s = s.substr(size);
off += size;
}

2
lld/wasm/Writer.cpp
View File

@@ -290,7 +290,7 @@ void Writer::writeBuildId() {
case BuildIdKind::Fast: {
std::vector<uint8_t> fileHash(8);
computeHash(fileHash, buf, [](uint8_t *dest, ArrayRef<uint8_t> arr) {
support::endian::write64le(dest, xxHash64(arr));
support::endian::write64le(dest, xxh3_64bits(arr));
});
makeUUID(5, fileHash, buildId);
break;