================
@@ -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
+ // as the backup location for the condition, which would probably be a
+ // better experience (no jumping to the brace).
+ if (auto *I = dyn_cast<llvm::Instruction>(BoolCondVal))
+ addInstToNewSourceAtom(I, nullptr);
----------------
jmorse wrote:
Please call the casted BoolCondVal something other than `I` to avoid the reader
having to think about shadowed variables ._.
https://github.com/llvm/llvm-project/pull/134644
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