mirror of
https://github.com/RPCSX/llvm.git
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448a1a0734
Fix cases where the Value itself is used, and not the constant value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206214 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
2.2 KiB
LLVM
68 lines
2.2 KiB
LLVM
; RUN: opt -S -instcombine < %s | FileCheck %s
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; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL
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; CHECK: mul <4 x i32> %in, <i32 0, i32 -32, i32 0, i32 -32>
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; CHECK-NEXT: ret
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define <4 x i32> @test_FoldShiftByConstant_CreateSHL(<4 x i32> %in) {
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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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; CHECK-LABEL: @test_FoldShiftByConstant_CreateSHL2
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; CHECK: 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
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define <8 x i16> @test_FoldShiftByConstant_CreateSHL2(<8 x i16> %in) {
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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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; CHECK-LABEL: @test_FoldShiftByConstant_CreateAnd
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; 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>
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; 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>
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; CHECK-NEXT: ret
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define <16 x i8> @test_FoldShiftByConstant_CreateAnd(<16 x i8> %in0) {
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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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%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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%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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%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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%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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