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[BOLT] Adjust Shdr alignment

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Shdr's are not necesarily size 2^n, and there is no reason to align to
that boundary if they are.

Differential Revision: https://reviews.llvm.org/D148666
This commit is contained in:
Nathan Sidwell 2023-04-18 18:13:16 -04:00
parent 31deca465f
commit f2f0411924
1 changed files with 3 additions and 2 deletions
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5
bolt/lib/Rewrite/RewriteInstance.cpp
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@ -4765,9 +4765,10 @@ void RewriteInstance::patchELFSectionHeaderTable(ELFObjectFile<ELFT> *File) {
dbgs() << " " << I << " -> " << NewSectionIndex[I] << '\n';
);
// Align starting address for section header table.
// Align starting address for section header table. There's no architecutal
// need to align this, it is just for pleasant human readability.
uint64_t SHTOffset = OS.tell();
SHTOffset = appendPadding(OS, SHTOffset, sizeof(ELFShdrTy));
SHTOffset = appendPadding(OS, SHTOffset, 16);
// Write all section header entries while patching section references.
for (ELFShdrTy &Section : OutputSections) {