[llvm] [X86][APX] Exclusively emit setzucc to avoid false dependency (PR #142092)
Feng Zou via llvm-commits
llvm-commits at lists.llvm.org
Thu Jun 12 20:48:36 PDT 2025
================
@@ -137,11 +137,14 @@ let Predicates = [HasCMOV, HasCF] in {
}
// SetCC instructions.
-let Uses = [EFLAGS], isCodeGenOnly = 1, ForceDisassemble = 1 in {
+let Uses = [EFLAGS], isCodeGenOnly = 1, ForceDisassemble = 1, Predicates = [NoNDD] in {
----------------
fzou1 wrote:
> `NoNDD`?
Yes. See the definition in X86InstrPredicates.td as below:
```
def HasNDD : Predicate<"Subtarget->hasNDD()">;
def NoNDD : Predicate<"!Subtarget->hasNDD()">;
```
https://github.com/llvm/llvm-project/pull/142092
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