forked from OSchip/llvm-project
90 lines
3.3 KiB
LLVM
90 lines
3.3 KiB
LLVM
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; RUN: opt -S -instcombine < %s | FileCheck %s
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define <4 x i32> @test_FoldShiftByConstant_CreateSHL(<4 x i32> %in) {
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; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL(
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; CHECK-NEXT: [[VSHL_N:%.*]] = mul <4 x i32> %in, <i32 0, i32 -32, i32 0, i32 -32>
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; CHECK-NEXT: ret <4 x i32> [[VSHL_N]]
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;
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%mul.i = mul <4 x i32> %in, <i32 0, i32 -1, i32 0, i32 -1>
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%vshl_n = shl <4 x i32> %mul.i, <i32 5, i32 5, i32 5, i32 5>
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ret <4 x i32> %vshl_n
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}
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define <8 x i16> @test_FoldShiftByConstant_CreateSHL2(<8 x i16> %in) {
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; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL2(
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; 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>
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; CHECK-NEXT: ret <8 x i16> [[VSHL_N]]
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;
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%mul.i = mul <8 x i16> %in, <i16 0, i16 -1, i16 0, i16 -1, i16 0, i16 -1, i16 0, i16 -1>
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%vshl_n = shl <8 x i16> %mul.i, <i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5>
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ret <8 x i16> %vshl_n
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}
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define <16 x i8> @test_FoldShiftByConstant_CreateAnd(<16 x i8> %in0) {
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; CHECK-LABEL: @test_FoldShiftByConstant_CreateAnd(
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; 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>
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; 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>
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; CHECK-NEXT: ret <16 x i8> [[VSHL_N]]
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;
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%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>
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%tmp = add <16 x i8> %in0, %vsra_n
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%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>
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ret <16 x i8> %vshl_n
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}
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define i32 @bar(i32 %x, i32 %y) {
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; CHECK-LABEL: @bar(
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; CHECK-NEXT: [[B1:%.*]] = shl i32 %y, 4
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; CHECK-NEXT: [[A2:%.*]] = add i32 [[B1]], %x
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; CHECK-NEXT: [[C:%.*]] = and i32 [[A2]], -16
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; CHECK-NEXT: ret i32 [[C]]
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;
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%a = lshr i32 %x, 4
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%b = add i32 %a, %y
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%c = shl i32 %b, 4
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ret i32 %c
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}
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define <2 x i32> @bar_v2i32(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @bar_v2i32(
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; CHECK-NEXT: [[B1:%.*]] = shl <2 x i32> %y, <i32 5, i32 5>
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; CHECK-NEXT: [[A2:%.*]] = add <2 x i32> [[B1]], %x
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; CHECK-NEXT: [[C:%.*]] = and <2 x i32> [[A2]], <i32 -32, i32 -32>
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; CHECK-NEXT: ret <2 x i32> [[C]]
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;
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%a = lshr <2 x i32> %x, <i32 5, i32 5>
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%b = add <2 x i32> %a, %y
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%c = shl <2 x i32> %b, <i32 5, i32 5>
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ret <2 x i32> %c
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}
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define i32 @foo(i32 %x, i32 %y) {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: [[C1:%.*]] = shl i32 %y, 4
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; CHECK-NEXT: [[X_MASK:%.*]] = and i32 %x, 128
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; CHECK-NEXT: [[D:%.*]] = add i32 [[X_MASK]], [[C1]]
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; CHECK-NEXT: ret i32 [[D]]
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;
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%a = lshr i32 %x, 4
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%b = and i32 %a, 8
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%c = add i32 %b, %y
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%d = shl i32 %c, 4
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ret i32 %d
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}
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define <2 x i32> @foo_v2i32(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @foo_v2i32(
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; CHECK-NEXT: [[A:%.*]] = lshr <2 x i32> %x, <i32 4, i32 4>
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; CHECK-NEXT: [[B:%.*]] = and <2 x i32> [[A]], <i32 8, i32 8>
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; CHECK-NEXT: [[C:%.*]] = add <2 x i32> [[B]], %y
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; CHECK-NEXT: [[D:%.*]] = shl <2 x i32> [[C]], <i32 4, i32 4>
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; CHECK-NEXT: ret <2 x i32> [[D]]
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;
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%a = lshr <2 x i32> %x, <i32 4, i32 4>
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%b = and <2 x i32> %a, <i32 8, i32 8>
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%c = add <2 x i32> %b, %y
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%d = shl <2 x i32> %c, <i32 4, i32 4>
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ret <2 x i32> %d
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}
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