diff options
Diffstat (limited to 'test/Transforms/InstCombine/signed-comparison.ll')
| -rw-r--r-- | test/Transforms/InstCombine/signed-comparison.ll | 45 |
1 files changed, 21 insertions, 24 deletions
diff --git a/test/Transforms/InstCombine/signed-comparison.ll b/test/Transforms/InstCombine/signed-comparison.ll index 922f4dcb2d42..1fbfc2d14633 100644 --- a/test/Transforms/InstCombine/signed-comparison.ll +++ b/test/Transforms/InstCombine/signed-comparison.ll @@ -1,28 +1,25 @@ -; RUN: opt < %s -instcombine -S > %t -; RUN: not grep zext %t -; RUN: not grep slt %t -; RUN: grep "icmp ult" %t +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -instcombine -S | FileCheck %s -; Instcombine should convert the zext+slt into a simple ult. +; Convert the zext+slt into a simple ult. -define void @foo(double* %p) nounwind { -entry: - br label %bb - -bb: - %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %bb ] - %t0 = and i64 %indvar, 65535 - %t1 = getelementptr double, double* %p, i64 %t0 - %t2 = load double, double* %t1, align 8 - %t3 = fmul double %t2, 2.2 - store double %t3, double* %t1, align 8 - %i.04 = trunc i64 %indvar to i16 - %t4 = add i16 %i.04, 1 - %t5 = zext i16 %t4 to i32 - %t6 = icmp slt i32 %t5, 500 - %indvar.next = add i64 %indvar, 1 - br i1 %t6, label %bb, label %return +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 +} -return: - ret void +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 } + |