Strengthen the boundary conditions of this fold, implementing

InstCombine/set.ll:test25

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35852 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 62f2b5afd02a7161c54bfad71c21d79e6d38a053..c8ec52ef8d0be2e3599a0356afa8f34f9c15ea9f 100644 (file)
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -4741,13 +4741,13 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
       case ICmpInst::ICMP_ULT:
         if (Max.ult(RHSVal))
           return ReplaceInstUsesWith(I, ConstantInt::getTrue());
-        if (Min.ugt(RHSVal))
+        if (Min.uge(RHSVal))
           return ReplaceInstUsesWith(I, ConstantInt::getFalse());
         break;
       case ICmpInst::ICMP_UGT:
         if (Min.ugt(RHSVal))
           return ReplaceInstUsesWith(I, ConstantInt::getTrue());
-        if (Max.ult(RHSVal))
+        if (Max.ule(RHSVal))
           return ReplaceInstUsesWith(I, ConstantInt::getFalse());
         break;
       case ICmpInst::ICMP_SLT:
@@ -4759,7 +4759,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
       case ICmpInst::ICMP_SGT: 
         if (Min.sgt(RHSVal))
           return ReplaceInstUsesWith(I, ConstantInt::getTrue());
-        if (Max.slt(RHSVal))
+        if (Max.sle(RHSVal))
           return ReplaceInstUsesWith(I, ConstantInt::getFalse());
         break;
       }