[llvm] [InstCombine] Extend fcmp+select folding to minnum/maxnum intrinsics (PR #112088)

[Alexey Bader via llvm-commits]

================
@@ -3834,11 +3834,13 @@ Instruction *InstCombinerImpl::visitSelectInst(SelectInst &SI) {
     // minnum/maxnum intrinsics.
     if (SIFPOp->hasNoNaNs() && SIFPOp->hasNoSignedZeros()) {
       Value *X, *Y;
-      if (match(&SI, m_OrdFMax(m_Value(X), m_Value(Y))))
+      if (match(&SI, m_OrdFMax(m_Value(X), m_Value(Y))) ||
+          match(&SI, m_UnordFMax(m_Value(X), m_Value(Y))))
----------------
bader wrote:

Okay. I'll refactor this code.
Should I update other uses of `m_OrdFMax` and `m_UnordFMax` uses in this patch?

https://github.com/llvm/llvm-project/pull/112088