Remove NoNaNsFPMath in DAGCombiner

paperchalice · paperchalice · commit 7d9d3ce09b12 · 2025-10-15T15:10:55.000+08:00
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -18337,8 +18337,7 @@ template <class MatchContextClass> SDValue DAGCombiner::visitFMA(SDNode *N) {
       return matcher.getNode(ISD::FMA, DL, VT, NegN0, NegN1, N2);
   }
 
-  if ((Options.NoNaNsFPMath && N->getFlags().hasNoInfs()) ||
-      (N->getFlags().hasNoNaNs() && N->getFlags().hasNoInfs())) {
+  if (N->getFlags().hasNoNaNs() && N->getFlags().hasNoInfs()) {
     if (N->getFlags().hasNoSignedZeros() ||
         (N2CFP && !N2CFP->isExactlyValue(-0.0))) {
       if (N0CFP && N0CFP->isZero())

Original file line number	Diff line number	Diff line change
`@@ -18337,8 +18337,7 @@ template <class MatchContextClass> SDValue DAGCombiner::visitFMA(SDNode *N) {`
`18337`	`18337`	`return matcher.getNode(ISD::FMA, DL, VT, NegN0, NegN1, N2);`
`18338`	`18338`	`}`
`18339`	`18339`
`18340`		`- if ((Options.NoNaNsFPMath && N->getFlags().hasNoInfs()) \|\|`
`18341`		`- (N->getFlags().hasNoNaNs() && N->getFlags().hasNoInfs())) {`
	`18340`	`+ if (N->getFlags().hasNoNaNs() && N->getFlags().hasNoInfs()) {`
`18342`	`18341`	`if (N->getFlags().hasNoSignedZeros() \|\|`
`18343`	`18342`	`(N2CFP && !N2CFP->isExactlyValue(-0.0))) {`
`18344`	`18343`	`if (N0CFP && N0CFP->isZero())`