diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/select.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/select.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/select.ll b/llvm/test/Transforms/InstCombine/select.ll index 7df3ba01998..876999b95dc 100644 --- a/llvm/test/Transforms/InstCombine/select.ll +++ b/llvm/test/Transforms/InstCombine/select.ll @@ -1589,3 +1589,21 @@ define i32 @PR23757(i32 %x) { %sel = select i1 %cmp, i32 -2147483648, i32 %add ret i32 %sel } + + +define i32 @PR27137(i32 %a) { +; CHECK-LABEL: @PR27137( +; CHECK-NEXT: %not_a = xor i32 %a, -1 +; CHECK-NEXT: %c0 = icmp slt i32 %a, 0 +; CHECK-NEXT: %s0 = select i1 %c0, i32 %not_a, i32 -1 +; CHECK-NEXT: %c1 = icmp sgt i32 %s0, -1 +; CHECK-NEXT: %s1 = select i1 %c1, i32 %s0, i32 -1 +; CHECK-NEXT: ret i32 %s1 + + %not_a = xor i32 %a, -1 + %c0 = icmp slt i32 %a, 0 + %s0 = select i1 %c0, i32 %not_a, i32 -1 + %c1 = icmp sgt i32 %s0, -1 + %s1 = select i1 %c1, i32 %s0, i32 -1 + ret i32 %s1 +} |
