diff options
Diffstat (limited to 'test/Transforms/InstCombine/sub.ll')
-rw-r--r-- | test/Transforms/InstCombine/sub.ll | 90 |
1 files changed, 88 insertions, 2 deletions
diff --git a/test/Transforms/InstCombine/sub.ll b/test/Transforms/InstCombine/sub.ll index 67b7c49..0e421f7 100644 --- a/test/Transforms/InstCombine/sub.ll +++ b/test/Transforms/InstCombine/sub.ll @@ -142,8 +142,9 @@ define i32 @test15(i32 %A, i32 %B) { %D = srem i32 %B, %C ret i32 %D ; CHECK-LABEL: @test15( -; CHECK: %D = srem i32 %B, %A -; CHECK: ret i32 %D +; CHECK: %[[sub:.*]] = sub i32 0, %A +; CHECK-NEXT: %[[rem:.*]] = srem i32 %B, %[[sub]] +; CHECK: ret i32 %[[rem]] } define i32 @test16(i32 %A) { @@ -464,3 +465,88 @@ define i32 @test38(i32 %A) { ; CHECK-NEXT: [[SEXT:%.*]] = sext i1 [[ICMP]] to i32 ; CHECK-NEXT: ret i32 [[SEXT]] } + +define i32 @test39(i32 %A, i32 %x) { + %B = sub i32 0, %A + %C = sub nsw i32 %x, %B + ret i32 %C +; CHECK-LABEL: @test39( +; CHECK: %C = add i32 %x, %A +; CHECK: ret i32 %C +} + +define i16 @test40(i16 %a, i16 %b) { + %ashr = ashr i16 %a, 1 + %ashr1 = ashr i16 %b, 1 + %sub = sub i16 %ashr, %ashr1 + ret i16 %sub +; CHECK-LABEL: @test40( +; CHECK-NEXT: [[ASHR:%.*]] = ashr i16 %a, 1 +; CHECK-NEXT: [[ASHR1:%.*]] = ashr i16 %b, 1 +; CHECK-NEXT: [[RET:%.*]] = sub nsw i16 [[ASHR]], [[ASHR1]] +; CHECK: ret i16 [[RET]] +} + +define i32 @test41(i16 %a, i16 %b) { + %conv = sext i16 %a to i32 + %conv1 = sext i16 %b to i32 + %sub = sub i32 %conv, %conv1 + ret i32 %sub +; CHECK-LABEL: @test41( +; CHECK-NEXT: [[SEXT:%.*]] = sext i16 %a to i32 +; CHECK-NEXT: [[SEXT1:%.*]] = sext i16 %b to i32 +; CHECK-NEXT: [[RET:%.*]] = sub nsw i32 [[SEXT]], [[SEXT1]] +; CHECK: ret i32 [[RET]] +} + +define i4 @test42(i4 %x, i4 %y) { + %a = and i4 %y, 7 + %b = and i4 %x, 7 + %c = sub i4 %a, %b + ret i4 %c +; CHECK-LABEL: @test42( +; CHECK-NEXT: [[AND:%.*]] = and i4 %y, 7 +; CHECK-NEXT: [[AND1:%.*]] = and i4 %x, 7 +; CHECK-NEXT: [[RET:%.*]] = sub nsw i4 [[AND]], [[AND1]] +; CHECK: ret i4 [[RET]] +} + +define i4 @test43(i4 %x, i4 %y) { + %a = or i4 %x, -8 + %b = and i4 %y, 7 + %c = sub i4 %a, %b + ret i4 %c +; CHECK-LABEL: @test43( +; CHECK-NEXT: [[OR:%.*]] = or i4 %x, -8 +; CHECK-NEXT: [[AND:%.*]] = and i4 %y, 7 +; CHECK-NEXT: [[RET:%.*]] = sub nuw i4 [[OR]], [[AND]] +; CHECK: ret i4 [[RET]] +} + +define i32 @test44(i32 %x) { + %sub = sub nsw i32 %x, 32768 + ret i32 %sub +; CHECK-LABEL: @test44( +; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 %x, -32768 +; CHECK: ret i32 [[ADD]] +} + +define i32 @test45(i32 %x, i32 %y) { + %or = or i32 %x, %y + %xor = xor i32 %x, %y + %sub = sub i32 %or, %xor + ret i32 %sub +; CHECK-LABEL: @test45( +; CHECK-NEXT: %sub = and i32 %x, %y +; CHECK: ret i32 %sub +} + +define i32 @test46(i32 %x, i32 %y) { + %or = or i32 %x, %y + %sub = sub i32 %or, %x + ret i32 %sub +; CHECK-LABEL: @test46( +; CHECK-NEXT: %x.not = xor i32 %x, -1 +; CHECK-NEXT: %sub = and i32 %y, %x.not +; CHECK: ret i32 %sub +} |