[llvm] [DAGCombine] Propagate truncate to operands (PR #98666)

[Matt Arsenault via llvm-commits]

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@@ -1040,6 +1040,8 @@ bool AMDGPUTargetLowering::isNarrowingProfitable(SDNode *N, EVT SrcVT,
   case ISD::MUL:
   case ISD::SETCC:
   case ISD::SELECT:
+    if (DestVT.getScalarSizeInBits() == 1)
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arsenm wrote:

getScalarType() == i1

https://github.com/llvm/llvm-project/pull/98666