diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/signed-comparison.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/signed-comparison.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/signed-comparison.ll b/llvm/test/Transforms/InstCombine/signed-comparison.ll new file mode 100644 index 00000000000..1fbfc2d1463 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/signed-comparison.ll @@ -0,0 +1,25 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -instcombine -S | FileCheck %s + +; Convert the zext+slt into a simple ult. + +define i1 @scalar_zext_slt(i16 %t4) { +; CHECK-LABEL: @scalar_zext_slt( +; CHECK-NEXT: [[T6:%.*]] = icmp ult i16 %t4, 500 +; CHECK-NEXT: ret i1 [[T6]] +; + %t5 = zext i16 %t4 to i32 + %t6 = icmp slt i32 %t5, 500 + ret i1 %t6 +} + +define <4 x i1> @vector_zext_slt(<4 x i16> %t4) { +; CHECK-LABEL: @vector_zext_slt( +; CHECK-NEXT: [[T6:%.*]] = icmp ult <4 x i16> %t4, <i16 500, i16 0, i16 501, i16 -1> +; CHECK-NEXT: ret <4 x i1> [[T6]] +; + %t5 = zext <4 x i16> %t4 to <4 x i32> + %t6 = icmp slt <4 x i32> %t5, <i32 500, i32 0, i32 501, i32 65535> + ret <4 x i1> %t6 +} + |
