diff options
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/abs-1.ll | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/llvm/test/Transforms/InstCombine/abs-1.ll b/llvm/test/Transforms/InstCombine/abs-1.ll index ab1fb3f069b..2f773dc2e21 100644 --- a/llvm/test/Transforms/InstCombine/abs-1.ll +++ b/llvm/test/Transforms/InstCombine/abs-1.ll @@ -301,9 +301,9 @@ define i8 @shifty_abs_too_many_uses(i8 %x) { define i8 @shifty_sub(i8 %x) { ; CHECK-LABEL: @shifty_sub( -; CHECK-NEXT: [[SH:%.*]] = ashr i8 [[X:%.*]], 7 -; CHECK-NEXT: [[XOR:%.*]] = xor i8 [[SH]], [[X]] -; CHECK-NEXT: [[R:%.*]] = sub i8 [[XOR]], [[SH]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i8 [[X:%.*]], 0 +; CHECK-NEXT: [[TMP2:%.*]] = sub i8 0, [[X]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i8 [[TMP2]], i8 [[X]] ; CHECK-NEXT: ret i8 [[R]] ; %sh = ashr i8 %x, 7 @@ -314,9 +314,9 @@ define i8 @shifty_sub(i8 %x) { define i8 @shifty_sub_nsw_commute(i8 %x) { ; CHECK-LABEL: @shifty_sub_nsw_commute( -; CHECK-NEXT: [[SH:%.*]] = ashr i8 [[X:%.*]], 7 -; CHECK-NEXT: [[XOR:%.*]] = xor i8 [[SH]], [[X]] -; CHECK-NEXT: [[R:%.*]] = sub nsw i8 [[XOR]], [[SH]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i8 [[X:%.*]], 0 +; CHECK-NEXT: [[TMP2:%.*]] = sub nsw i8 0, [[X]] +; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i8 [[TMP2]], i8 [[X]] ; CHECK-NEXT: ret i8 [[R]] ; %sh = ashr i8 %x, 7 @@ -327,9 +327,8 @@ define i8 @shifty_sub_nsw_commute(i8 %x) { define <4 x i32> @shifty_sub_nuw_vec_commute(<4 x i32> %x) { ; CHECK-LABEL: @shifty_sub_nuw_vec_commute( -; CHECK-NEXT: [[SH:%.*]] = ashr <4 x i32> [[X:%.*]], <i32 31, i32 31, i32 31, i32 31> -; CHECK-NEXT: [[XOR:%.*]] = xor <4 x i32> [[SH]], [[X]] -; CHECK-NEXT: [[R:%.*]] = sub nuw <4 x i32> [[XOR]], [[SH]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt <4 x i32> [[X:%.*]], zeroinitializer +; CHECK-NEXT: [[R:%.*]] = select <4 x i1> [[TMP1]], <4 x i32> [[X]], <4 x i32> zeroinitializer ; CHECK-NEXT: ret <4 x i32> [[R]] ; %sh = ashr <4 x i32> %x, <i32 31, i32 31, i32 31, i32 31> @@ -340,9 +339,8 @@ define <4 x i32> @shifty_sub_nuw_vec_commute(<4 x i32> %x) { define i12 @shifty_sub_nsw_nuw(i12 %x) { ; CHECK-LABEL: @shifty_sub_nsw_nuw( -; CHECK-NEXT: [[SH:%.*]] = ashr i12 [[X:%.*]], 11 -; CHECK-NEXT: [[XOR:%.*]] = xor i12 [[SH]], [[X]] -; CHECK-NEXT: [[R:%.*]] = sub nuw nsw i12 [[XOR]], [[SH]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i12 [[X:%.*]], 0 +; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i12 [[X]], i12 0 ; CHECK-NEXT: ret i12 [[R]] ; %sh = ashr i12 %x, 11 |
