================
@@ -1165,6 +1188,23 @@ void Writer::createMiscChunks() {
llvm::TimeTraceScope timeScope("Misc chunks");
Configuration *config = &ctx.config;
+ auto searchForPgoMagicSection = [this](char sectionName[]) {
----------------
mikolaj-pirog wrote:
I haven't measured that yet. I was thinking of other solutions to this, but
this is the best I came up with. The fundamental problem is that the lld linker
has to know about pgu/pgi -- to do that I pass this info by creating special
sections in the COFF object files, and later look for them in the linking
phase. The other option is creating a new flag and pass it down to the linker,
but that is also far from ideal. I was hoping to maybe put some flag in some
header in the COFF file, I think COFF doesn't support that. As such, I opted
for the creating-and-later-looking-for section approach
https://github.com/llvm/llvm-project/pull/114260
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