[llvm-branch-commits] [lld] feadc37 - [lld/mac] Make X86_64::getImplicitAddend not do heap allocations
Nico Weber via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Mon Dec 7 06:24:13 PST 2020
Author: Nico Weber
Date: 2020-12-07T09:23:51-05:00
New Revision: feadc3798d9ab123057a7a1064897188ac8de934
URL: https://github.com/llvm/llvm-project/commit/feadc3798d9ab123057a7a1064897188ac8de934
DIFF: https://github.com/llvm/llvm-project/commit/feadc3798d9ab123057a7a1064897188ac8de934.diff
LOG: [lld/mac] Make X86_64::getImplicitAddend not do heap allocations
Speeds up linking Chromium's base_unittests almost 10%. According to ministat:
N Min Max Median Avg Stddev
x 5 0.72193289 0.73073196 0.72560811 0.72565799 0.0032265649
+ 5 0.64069581 0.67173195 0.65876389 0.65796089 0.011349451
Difference at 95.0% confidence
-0.0676971 +/- 0.0121682
-9.32906% +/- 1.67685%
(Student's t, pooled s = 0.00834328)
Differential Revision: https://reviews.llvm.org/D92734
Added:
Modified:
lld/MachO/Arch/X86_64.cpp
Removed:
################################################################################
diff --git a/lld/MachO/Arch/X86_64.cpp b/lld/MachO/Arch/X86_64.cpp
index 19e62a919caf..7f4024cc998d 100644
--- a/lld/MachO/Arch/X86_64.cpp
+++ b/lld/MachO/Arch/X86_64.cpp
@@ -52,9 +52,8 @@ static std::string getErrorLocation(MemoryBufferRef mb, const section_64 &sec,
static void validateLength(MemoryBufferRef mb, const section_64 &sec,
const relocation_info &rel,
- const std::vector<uint8_t> &validLengths) {
- if (std::find(validLengths.begin(), validLengths.end(), rel.r_length) !=
- validLengths.end())
+ ArrayRef<uint8_t> validLengths) {
+ if (find(validLengths, rel.r_length) != validLengths.end())
return;
std::string msg = getErrorLocation(mb, sec, rel) + ": relocations of type " +
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