diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/TargetLowering.cpp | 2 | ||||
| -rw-r--r-- | test/CodeGen/X86/shrink-compare.ll | 16 |
2 files changed, 17 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp index f5fc66c4d3..95c327c8b0 100644 --- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -1160,7 +1160,7 @@ TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1, } // Make sure we're not losing bits from the constant. - if (MinBits < C1.getBitWidth() && MinBits > C1.getActiveBits()) { + if (MinBits < C1.getBitWidth() && MinBits >= C1.getActiveBits()) { EVT MinVT = EVT::getIntegerVT(*DAG.getContext(), MinBits); if (isTypeDesirableForOp(ISD::SETCC, MinVT)) { // Will get folded away. diff --git a/test/CodeGen/X86/shrink-compare.ll b/test/CodeGen/X86/shrink-compare.ll index 8d4b07f9d9..0c16f86ff1 100644 --- a/test/CodeGen/X86/shrink-compare.ll +++ b/test/CodeGen/X86/shrink-compare.ll @@ -34,3 +34,19 @@ if.end: ; CHECK: test2: ; CHECK: cmpb $47, %{{dil|cl}} } + +define void @test3(i32 %X) nounwind { +entry: + %and = and i32 %X, 255 + %cmp = icmp eq i32 %and, 255 + br i1 %cmp, label %if.then, label %if.end + +if.then: + tail call void @bar() nounwind + br label %if.end + +if.end: + ret void +; CHECK: test3: +; CHECK: cmpb $-1, %{{dil|cl}} +} |