| ; 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) { |
| %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) { |
| %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) { |
| %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) { |
| %a = lshr i32 %x, 4 |
| %b = add i32 %a, %y |
| %c = shl i32 %b, 4 |
| ret i32 %c |
| } |
| |
| define <2 x i32> @bar_v2i32(<2 x i32> %x, <2 x i32> %y) { |
| %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) { |
| %a = lshr i32 %x, 4 |
| %b = and i32 %a, 8 |
| %c = add i32 %b, %y |
| %d = shl i32 %c, 4 |
| ret i32 %d |
| } |
| |
| define <2 x i32> @foo_v2i32(<2 x i32> %x, <2 x i32> %y) { |
| %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 |
| %d = shl <2 x i32> %c, <i32 4, i32 4> |
| ret <2 x i32> %d |
| } |
| |
| |
| |