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1; RUN: opt -S -instcombine < %s | FileCheck %s
2
3; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL
4; CHECK: mul <4 x i32> %in, <i32 0, i32 -32, i32 0, i32 -32>
5; CHECK-NEXT: ret
6define <4 x i32> @test_FoldShiftByConstant_CreateSHL(<4 x i32> %in) {
7  %mul.i = mul <4 x i32> %in, <i32 0, i32 -1, i32 0, i32 -1>
8  %vshl_n = shl <4 x i32> %mul.i, <i32 5, i32 5, i32 5, i32 5>
9  ret <4 x i32> %vshl_n
10}
11
12; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL2
13; CHECK: mul <8 x i16> %in, <i16 0, i16 -32, i16 0, i16 -32, i16 0, i16 -32, i16 0, i16 -32>
14; CHECK-NEXT: ret
15define <8 x i16> @test_FoldShiftByConstant_CreateSHL2(<8 x i16> %in) {
16  %mul.i = mul <8 x i16> %in, <i16 0, i16 -1, i16 0, i16 -1, i16 0, i16 -1, i16 0, i16 -1>
17  %vshl_n = shl <8 x i16> %mul.i, <i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5>
18  ret <8 x i16> %vshl_n
19}
20
21; CHECK-LABEL: @test_FoldShiftByConstant_CreateAnd
22; 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>
23; 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>
24; CHECK-NEXT: ret
25define <16 x i8> @test_FoldShiftByConstant_CreateAnd(<16 x i8> %in0) {
26  %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>
27  %tmp = add <16 x i8> %in0, %vsra_n
28  %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>
29  ret <16 x i8> %vshl_n
30}
31
32
33define i32 @bar(i32 %x, i32 %y) {
34  %a = lshr i32 %x, 4
35  %b = add i32 %a, %y
36  %c = shl i32 %b, 4
37  ret i32 %c
38}
39
40define <2 x i32> @bar_v2i32(<2 x i32> %x, <2 x i32> %y) {
41  %a = lshr <2 x i32> %x, <i32 5, i32 5>
42  %b = add <2 x i32> %a, %y
43  %c = shl <2 x i32> %b, <i32 5, i32 5>
44  ret <2 x i32> %c
45}
46
47
48
49
50define i32 @foo(i32 %x, i32 %y) {
51  %a = lshr i32 %x, 4
52  %b = and i32 %a, 8
53  %c = add i32 %b, %y
54  %d = shl i32 %c, 4
55  ret i32 %d
56}
57
58define <2 x i32> @foo_v2i32(<2 x i32> %x, <2 x i32> %y) {
59  %a = lshr <2 x i32> %x, <i32 4, i32 4>
60  %b = and <2 x i32> %a, <i32 8, i32 8>
61  %c = add <2 x i32> %b, %y
62  %d = shl <2 x i32> %c, <i32 4, i32 4>
63  ret <2 x i32> %d
64}
65
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68