diff options
| -rw-r--r-- | llvm/test/Transforms/InstCombine/pr19420.ll | 54 |
1 files changed, 38 insertions, 16 deletions
diff --git a/llvm/test/Transforms/InstCombine/pr19420.ll b/llvm/test/Transforms/InstCombine/pr19420.ll index 23fa0a40974..015f35eaaa5 100644 --- a/llvm/test/Transforms/InstCombine/pr19420.ll +++ b/llvm/test/Transforms/InstCombine/pr19420.ll @@ -1,36 +1,44 @@ ; RUN: opt -S -instcombine < %s | FileCheck %s -; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL -; CHECK: mul <4 x i32> %in, <i32 0, i32 -32, i32 0, i32 -32> -; CHECK-NEXT: ret define <4 x i32> @test_FoldShiftByConstant_CreateSHL(<4 x i32> %in) { +; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL( +; CHECK-NEXT: [[VSHL_N:%.*]] = mul <4 x i32> %in, <i32 0, i32 -32, i32 0, i32 -32> +; CHECK-NEXT: ret <4 x i32> [[VSHL_N]] +; %mul.i = mul <4 x i32> %in, <i32 0, i32 -1, i32 0, i32 -1> %vshl_n = shl <4 x i32> %mul.i, <i32 5, i32 5, i32 5, i32 5> ret <4 x i32> %vshl_n } -; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL2 -; CHECK: mul <8 x i16> %in, <i16 0, i16 -32, i16 0, i16 -32, i16 0, i16 -32, i16 0, i16 -32> -; CHECK-NEXT: ret define <8 x i16> @test_FoldShiftByConstant_CreateSHL2(<8 x i16> %in) { +; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL2( +; CHECK-NEXT: [[VSHL_N:%.*]] = mul <8 x i16> %in, <i16 0, i16 -32, i16 0, i16 -32, i16 0, i16 -32, i16 0, i16 -32> +; CHECK-NEXT: ret <8 x i16> [[VSHL_N]] +; %mul.i = mul <8 x i16> %in, <i16 0, i16 -1, i16 0, i16 -1, i16 0, i16 -1, i16 0, i16 -1> %vshl_n = shl <8 x i16> %mul.i, <i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5> ret <8 x i16> %vshl_n } -; CHECK-LABEL: @test_FoldShiftByConstant_CreateAnd -; CHECK: mul <16 x i8> %in0, <i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33> -; CHECK-NEXT: and <16 x i8> %vsra_n2, <i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32> -; CHECK-NEXT: ret define <16 x i8> @test_FoldShiftByConstant_CreateAnd(<16 x i8> %in0) { +; CHECK-LABEL: @test_FoldShiftByConstant_CreateAnd( +; CHECK-NEXT: [[VSRA_N2:%.*]] = mul <16 x i8> %in0, <i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33, i8 33> +; CHECK-NEXT: [[VSHL_N:%.*]] = and <16 x i8> [[VSRA_N2]], <i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32, i8 -32> +; CHECK-NEXT: ret <16 x i8> [[VSHL_N]] +; %vsra_n = ashr <16 x i8> %in0, <i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5> %tmp = add <16 x i8> %in0, %vsra_n %vshl_n = shl <16 x i8> %tmp, <i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5, i8 5> ret <16 x i8> %vshl_n } - define i32 @bar(i32 %x, i32 %y) { +; CHECK-LABEL: @bar( +; CHECK-NEXT: [[B1:%.*]] = shl i32 %y, 4 +; CHECK-NEXT: [[A2:%.*]] = add i32 [[B1]], %x +; CHECK-NEXT: [[C:%.*]] = and i32 [[A2]], -16 +; CHECK-NEXT: ret i32 [[C]] +; %a = lshr i32 %x, 4 %b = add i32 %a, %y %c = shl i32 %b, 4 @@ -38,16 +46,25 @@ define i32 @bar(i32 %x, i32 %y) { } define <2 x i32> @bar_v2i32(<2 x i32> %x, <2 x i32> %y) { +; CHECK-LABEL: @bar_v2i32( +; CHECK-NEXT: [[B1:%.*]] = shl <2 x i32> %y, <i32 5, i32 5> +; CHECK-NEXT: [[A2:%.*]] = add <2 x i32> [[B1]], %x +; CHECK-NEXT: [[C:%.*]] = and <2 x i32> [[A2]], <i32 -32, i32 -32> +; CHECK-NEXT: ret <2 x i32> [[C]] +; %a = lshr <2 x i32> %x, <i32 5, i32 5> %b = add <2 x i32> %a, %y %c = shl <2 x i32> %b, <i32 5, i32 5> ret <2 x i32> %c } - - - define i32 @foo(i32 %x, i32 %y) { +; CHECK-LABEL: @foo( +; CHECK-NEXT: [[C1:%.*]] = shl i32 %y, 4 +; CHECK-NEXT: [[X_MASK:%.*]] = and i32 %x, 128 +; CHECK-NEXT: [[D:%.*]] = add i32 [[X_MASK]], [[C1]] +; CHECK-NEXT: ret i32 [[D]] +; %a = lshr i32 %x, 4 %b = and i32 %a, 8 %c = add i32 %b, %y @@ -56,6 +73,13 @@ define i32 @foo(i32 %x, i32 %y) { } define <2 x i32> @foo_v2i32(<2 x i32> %x, <2 x i32> %y) { +; CHECK-LABEL: @foo_v2i32( +; CHECK-NEXT: [[A:%.*]] = lshr <2 x i32> %x, <i32 4, i32 4> +; CHECK-NEXT: [[B:%.*]] = and <2 x i32> [[A]], <i32 8, i32 8> +; CHECK-NEXT: [[C:%.*]] = add <2 x i32> [[B]], %y +; CHECK-NEXT: [[D:%.*]] = shl <2 x i32> [[C]], <i32 4, i32 4> +; CHECK-NEXT: ret <2 x i32> [[D]] +; %a = lshr <2 x i32> %x, <i32 4, i32 4> %b = and <2 x i32> %a, <i32 8, i32 8> %c = add <2 x i32> %b, %y @@ -63,5 +87,3 @@ define <2 x i32> @foo_v2i32(<2 x i32> %x, <2 x i32> %y) { ret <2 x i32> %d } - - |
