diff options
| -rw-r--r-- | llvm/test/Transforms/InstCombine/icmp-shl-nsw.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/icmp-shl-nsw.ll b/llvm/test/Transforms/InstCombine/icmp-shl-nsw.ll index 85e397ec241..896a45625b9 100644 --- a/llvm/test/Transforms/InstCombine/icmp-shl-nsw.ll +++ b/llvm/test/Transforms/InstCombine/icmp-shl-nsw.ll @@ -201,5 +201,18 @@ define i1 @icmp_sgt11(i8 %x) { ret i1 %cmp } +; Splat vector version should fold the same way. + +define <2 x i1> @icmp_sgt11_vec(<2 x i8> %x) { +; CHECK-LABEL: @icmp_sgt11_vec( +; CHECK-NEXT: [[SHL:%.*]] = shl nsw <2 x i8> %x, <i8 7, i8 7> +; CHECK-NEXT: [[CMP:%.*]] = icmp sgt <2 x i8> [[SHL]], <i8 -2, i8 -2> +; CHECK-NEXT: ret <2 x i1> [[CMP]] +; + %shl = shl nsw <2 x i8> %x, <i8 7, i8 7> + %cmp = icmp sgt <2 x i8> %shl, <i8 -2, i8 -2> + ret <2 x i1> %cmp +} + ; Known bits analysis returns false for compares with >=0. |
