================
@@ -1242,9 +1242,17 @@ void CodeGenFunction::EmitDoStmt(const DoStmt &S,
// As long as the condition is true, iterate the loop.
if (EmitBoolCondBranch) {
uint64_t BackedgeCount = getProfileCount(S.getBody()) - ParentCount;
- Builder.CreateCondBr(
+ auto *I = Builder.CreateCondBr(
BoolCondVal, LoopBody, LoopExit.getBlock(),
createProfileWeightsForLoop(S.getCond(), BackedgeCount));
+
+ // Key Instructions: Emit the condition and branch as separate atoms to
+ // match existing loop stepping behaviour. FIXME: We could have the branch
----------------
jmorse wrote:
IMO "existing" should be expanded into what the stepping actually is, as this
comment could unexpectedly go out of date.
https://github.com/llvm/llvm-project/pull/134644
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