Reapply "InstSimplify: Use isKnownNeverInfOrNaN"

This reverts commit f55224735ed39af16bccd7ff67b734fd758db6fc.

diff --git a/llvm/lib/Analysis/InstructionSimplify.cpp b/llvm/lib/Analysis/InstructionSimplify.cpp
index 3a721eb..e73b13f 100644 (file)
--- a/llvm/lib/Analysis/InstructionSimplify.cpp
+++ b/llvm/lib/Analysis/InstructionSimplify.cpp
@@ -4091,14 +4091,10 @@ static Value *simplifyFCmpInst(unsigned Predicate, Value *LHS, Value *RHS,
       if (Pred == FCmpInst::FCMP_UNE && isKnownNeverInfinity(LHS, Q.DL, Q.TLI))
         return getTrue(RetTy);
       // LHS == Inf || LHS == NaN
-      if (Pred == FCmpInst::FCMP_UEQ &&
-          isKnownNeverInfinity(LHS, Q.DL, Q.TLI) &&
-          isKnownNeverNaN(LHS, Q.DL, Q.TLI))
+      if (Pred == FCmpInst::FCMP_UEQ && isKnownNeverInfOrNaN(LHS, Q.DL, Q.TLI))
         return getFalse(RetTy);
       // LHS != Inf && LHS != NaN
-      if (Pred == FCmpInst::FCMP_ONE &&
-          isKnownNeverInfinity(LHS, Q.DL, Q.TLI) && // xxxx fixme
-          isKnownNeverNaN(LHS, Q.DL, Q.TLI))
+      if (Pred == FCmpInst::FCMP_ONE && isKnownNeverInfOrNaN(LHS, Q.DL, Q.TLI))
         return getTrue(RetTy);
     }
     if (C->isNegative() && !C->isNegZero()) {