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Run writeTo() concurrently. 

I don't know why we didn't use parallelForEach to call writeTo,
but there should be no reason to not do that, as most writeTo
functions are safe to run concurrently.

llvm-svn: 314616
This commit is contained in:
Rui Ueyama 2017-10-01 02:25:34 +00:00
parent bffac0eb81
commit cb222035c2
1 changed files with 4 additions and 2 deletions
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6
lld/ELF/Writer.cpp
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@ -1910,14 +1910,16 @@ template <class ELFT> void Writer<ELFT>::writeSections() {
// In -r or -emit-relocs mode, write the relocation sections first as in // In -r or -emit-relocs mode, write the relocation sections first as in
// ELf_Rel targets we might find out that we need to modify the relocated // ELf_Rel targets we might find out that we need to modify the relocated
// section while doing it. // section while doing it.
for (OutputSection *Sec : OutputSections) parallelForEach(OutputSections, [&](OutputSection *Sec) {
if (Sec->Type == SHT_REL || Sec->Type == SHT_RELA) if (Sec->Type == SHT_REL || Sec->Type == SHT_RELA)
Sec->writeTo<ELFT>(Buf + Sec->Offset); Sec->writeTo<ELFT>(Buf + Sec->Offset);
});
for (OutputSection *Sec : OutputSections) parallelForEach(OutputSections, [&](OutputSection *Sec) {
if (Sec != Out::Opd && Sec != EhFrameHdr && Sec->Type != SHT_REL && if (Sec != Out::Opd && Sec != EhFrameHdr && Sec->Type != SHT_REL &&
Sec->Type != SHT_RELA) Sec->Type != SHT_RELA)
Sec->writeTo<ELFT>(Buf + Sec->Offset); Sec->writeTo<ELFT>(Buf + Sec->Offset);
});
// The .eh_frame_hdr depends on .eh_frame section contents, therefore // The .eh_frame_hdr depends on .eh_frame section contents, therefore
// it should be written after .eh_frame is written. // it should be written after .eh_frame is written.