[clang] [llvm] wip: Move instrumentation passes (PR #92171)

[Egor Pasko via llvm-commits]

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@@ -1028,6 +1029,14 @@ PassBuilder::buildModuleSimplificationPipeline(OptimizationLevel Level,
       Phase != ThinOrFullLTOPhase::ThinLTOPostLink)
     MPM.addPass(SampleProfileProbePass(TM));
 
+  // Instrument function entry and exit before all inlining.
+  if (Phase != ThinOrFullLTOPhase::ThinLTOPostLink &&
+      Phase != ThinOrFullLTOPhase::FullLTOPostLink &&
+      Phase != ThinOrFullLTOPhase::None) {
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pasko wrote:

I was confused by setting None prior to that in `buildPerModuleDefaultPipeline`, but it is never called for this assignment to happen. Indeed, since None means non-LTO cases, we should instrument with None. Done.

https://github.com/llvm/llvm-project/pull/92171