[llvm] 1e34a17 - Reapply "InstSimplify: Use isKnownNeverInfOrNaN"

[Matt Arsenault via llvm-commits]

Author: Matt Arsenault
Date: 2023-05-23T08:48:25+01:00
New Revision: 1e34a1792610c91decd0019ee58be3a24e58af0f

URL: https://github.com/llvm/llvm-project/commit/1e34a1792610c91decd0019ee58be3a24e58af0f
DIFF: https://github.com/llvm/llvm-project/commit/1e34a1792610c91decd0019ee58be3a24e58af0f.diff

LOG: Reapply "InstSimplify: Use isKnownNeverInfOrNaN"

This reverts commit f55224735ed39af16bccd7ff67b734fd758db6fc.

Added: 
    

Modified: 
    llvm/lib/Analysis/InstructionSimplify.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Analysis/InstructionSimplify.cpp b/llvm/lib/Analysis/InstructionSimplify.cpp
index 3a721eba832a..e73b13f558ef 100644
--- 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()) {