================
@@ -6008,6 +6009,15 @@ static bool combineInstructionsOverFunction(
if (!MadeChangeInThisIteration)
break;
+ // Issue #147390: InstCombine emits `select` as rewrites of instructions
+ // without metadata. It may be possible to synthesize some more meaningful
+ // profiles in some cases (based on operands or based on the pattern)
+ if (auto EC = F.getEntryCount(); EC.has_value() && EC->getCount() > 0)
+ for (auto &BB : F)
+ for (auto &I : BB)
+ if (isa<SelectInst>(I) && !I.getMetadata(LLVMContext::MD_prof))
----------------
boomanaiden154 wrote:
Ah, forgot that the verifier runs after every pass. This seems reasonable
enough to me then.
https://github.com/llvm/llvm-project/pull/157599
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