[PATCH] D126800: Write output sections in parallel
Michael Eisel via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Jun 1 14:07:13 PDT 2022
michaeleisel updated this revision to Diff 433541.
michaeleisel added a comment.
Use range-based insertion for output sections
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D126800/new/
https://reviews.llvm.org/D126800
Files:
lld/MachO/Writer.cpp
Index: lld/MachO/Writer.cpp
===================================================================
--- lld/MachO/Writer.cpp
+++ lld/MachO/Writer.cpp
@@ -20,6 +20,7 @@
#include "SyntheticSections.h"
#include "Target.h"
#include "UnwindInfoSection.h"
+#include "llvm/Support/Parallel.h"
#include "lld/Common/Arrays.h"
#include "lld/Common/CommonLinkerContext.h"
@@ -1081,9 +1082,15 @@
void Writer::writeSections() {
uint8_t *buf = buffer->getBufferStart();
- for (const OutputSegment *seg : outputSegments)
- for (const OutputSection *osec : seg->getSections())
- osec->writeTo(buf + osec->fileOff);
+ std::vector<const OutputSection *> osecs;
+ for (const OutputSegment *seg : outputSegments) {
+ const std::vector<OutputSection *> §ions = seg->getSections();
+ osecs.insert(osecs.end(), sections.begin(), sections.end());
+ }
+
+ parallelForEach(osecs.begin(), osecs.end(), [&](const OutputSection *osec) {
+ osec->writeTo(buf + osec->fileOff);
+ });
}
// In order to utilize multiple cores, we first split the buffer into chunks,
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