================
@@ -908,6 +908,69 @@ void CodeGenFunction::EmitIfStmt(const IfStmt &S) {
incrementProfileCounter(&S);
}
+bool CodeGenFunction::checkIfLoopMustProgress(const Expr
*ControllingExpression,
+ bool HasEmptyBody) {
+ if (CGM.getCodeGenOpts().getFiniteLoops() ==
+ CodeGenOptions::FiniteLoopsKind::Never)
+ return false;
+
+ // Now apply rules for plain C (see 6.8.5.6 in C11).
+ // Loops with constant conditions do not have to make progress in any C
+ // version.
+ // As an extension, we consisider loops whose constant expression
+ // can be constant-folded.
+ Expr::EvalResult Result;
+ bool CondIsConstInt =
----------------
hubert-reinterpretcast wrote:
The following does not have UB according to the standard, but Clang treats it
as UB:
```
int main(void) {
int x = 1;
while (__builtin_is_constant_evaluated() || x);
return 0;
}
```
https://github.com/llvm/llvm-project/pull/90066
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