[InstCombine] allow icmp+binop folds before min/max bailout (PR43310)

This has the potential to uncover missed analysis/folds as shown in the
min/max code comment/test, but fewer restrictions on icmp folds should
be better in general to solve cases like:
https://bugs.llvm.org/show_bug.cgi?id=43310

llvm-svn: 372510

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
index e569ae866b5..5bafab49032 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -5394,6 +5394,9 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
   if (Instruction *Res = foldICmpWithDominatingICmp(I))
     return Res;
 
+  if (Instruction *Res = foldICmpBinOp(I))
+    return Res;
+
   if (Instruction *Res = foldICmpUsingKnownBits(I))
     return Res;
 
@@ -5471,9 +5474,6 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
   if (Instruction *R = foldICmpWithCastOp(I))
     return R;
 
-  if (Instruction *Res = foldICmpBinOp(I))
-    return Res;
-
   if (Instruction *Res = foldICmpWithMinMax(I))
     return Res;