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c18792fc71
As discussed on llvm-dev ( http://lists.llvm.org/pipermail/llvm-dev/2016-August/104210.html ): turn a vector select with constant condition operand into a shuffle as a canonicalization step. Shuffles may be easier to reason about in conjunction with other shuffles and insert/extract. Possible known (minor?) regressions from this change are filed as: https://llvm.org/bugs/show_bug.cgi?id=28530 https://llvm.org/bugs/show_bug.cgi?id=28531 https://llvm.org/bugs/show_bug.cgi?id=30371 If something terrible happens to perf after this commit, feel free to revert until a backend fix is in place. Differential Revision: https://reviews.llvm.org/D24279 llvm-svn: 281787
152 lines
7.5 KiB
LLVM
152 lines
7.5 KiB
LLVM
; RUN: opt < %s -instcombine -mtriple=x86_64-apple-macosx -mcpu=core-avx2 -S | FileCheck %s
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define <2 x double> @constant_blendvpd(<2 x double> %xy, <2 x double> %ab) {
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; CHECK-LABEL: @constant_blendvpd(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <2 x double> %ab, <2 x double> %xy, <2 x i32> <i32 0, i32 3>
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; CHECK-NEXT: ret <2 x double> [[TMP1]]
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;
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%1 = tail call <2 x double> @llvm.x86.sse41.blendvpd(<2 x double> %xy, <2 x double> %ab, <2 x double> <double 0xFFFFFFFFE0000000, double 0.000000e+00>)
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ret <2 x double> %1
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}
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define <2 x double> @constant_blendvpd_zero(<2 x double> %xy, <2 x double> %ab) {
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; CHECK-LABEL: @constant_blendvpd_zero
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; CHECK-NEXT: ret <2 x double> %xy
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%1 = tail call <2 x double> @llvm.x86.sse41.blendvpd(<2 x double> %xy, <2 x double> %ab, <2 x double> zeroinitializer)
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ret <2 x double> %1
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}
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define <2 x double> @constant_blendvpd_dup(<2 x double> %xy, <2 x double> %sel) {
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; CHECK-LABEL: @constant_blendvpd_dup
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; CHECK-NEXT: ret <2 x double> %xy
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%1 = tail call <2 x double> @llvm.x86.sse41.blendvpd(<2 x double> %xy, <2 x double> %xy, <2 x double> %sel)
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ret <2 x double> %1
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}
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define <4 x float> @constant_blendvps(<4 x float> %xyzw, <4 x float> %abcd) {
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; CHECK-LABEL: @constant_blendvps(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x float> %abcd, <4 x float> %xyzw, <4 x i32> <i32 4, i32 5, i32 6, i32 3>
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; CHECK-NEXT: ret <4 x float> [[TMP1]]
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;
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%1 = tail call <4 x float> @llvm.x86.sse41.blendvps(<4 x float> %xyzw, <4 x float> %abcd, <4 x float> <float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0xFFFFFFFFE0000000>)
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ret <4 x float> %1
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}
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define <4 x float> @constant_blendvps_zero(<4 x float> %xyzw, <4 x float> %abcd) {
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; CHECK-LABEL: @constant_blendvps_zero
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; CHECK-NEXT: ret <4 x float> %xyzw
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%1 = tail call <4 x float> @llvm.x86.sse41.blendvps(<4 x float> %xyzw, <4 x float> %abcd, <4 x float> zeroinitializer)
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ret <4 x float> %1
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}
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define <4 x float> @constant_blendvps_dup(<4 x float> %xyzw, <4 x float> %sel) {
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; CHECK-LABEL: @constant_blendvps_dup
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; CHECK-NEXT: ret <4 x float> %xyzw
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%1 = tail call <4 x float> @llvm.x86.sse41.blendvps(<4 x float> %xyzw, <4 x float> %xyzw, <4 x float> %sel)
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ret <4 x float> %1
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}
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define <16 x i8> @constant_pblendvb(<16 x i8> %xyzw, <16 x i8> %abcd) {
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; CHECK-LABEL: @constant_pblendvb(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <16 x i8> %abcd, <16 x i8> %xyzw, <16 x i32> <i32 16, i32 17, i32 2, i32 19, i32 4, i32 5, i32 6, i32 23, i32 24, i32 25, i32 10, i32 27, i32 12, i32 13, i32 14, i32 31>
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; CHECK-NEXT: ret <16 x i8> [[TMP1]]
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;
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%1 = tail call <16 x i8> @llvm.x86.sse41.pblendvb(<16 x i8> %xyzw, <16 x i8> %abcd, <16 x i8> <i8 0, i8 0, i8 255, i8 0, i8 255, i8 255, i8 255, i8 0, i8 0, i8 0, i8 255, i8 0, i8 255, i8 255, i8 255, i8 0>)
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ret <16 x i8> %1
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}
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define <16 x i8> @constant_pblendvb_zero(<16 x i8> %xyzw, <16 x i8> %abcd) {
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; CHECK-LABEL: @constant_pblendvb_zero
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; CHECK-NEXT: ret <16 x i8> %xyzw
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%1 = tail call <16 x i8> @llvm.x86.sse41.pblendvb(<16 x i8> %xyzw, <16 x i8> %abcd, <16 x i8> zeroinitializer)
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ret <16 x i8> %1
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}
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define <16 x i8> @constant_pblendvb_dup(<16 x i8> %xyzw, <16 x i8> %sel) {
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; CHECK-LABEL: @constant_pblendvb_dup
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; CHECK-NEXT: ret <16 x i8> %xyzw
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%1 = tail call <16 x i8> @llvm.x86.sse41.pblendvb(<16 x i8> %xyzw, <16 x i8> %xyzw, <16 x i8> %sel)
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ret <16 x i8> %1
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}
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define <4 x double> @constant_blendvpd_avx(<4 x double> %xy, <4 x double> %ab) {
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; CHECK-LABEL: @constant_blendvpd_avx(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x double> %ab, <4 x double> %xy, <4 x i32> <i32 0, i32 5, i32 2, i32 7>
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; CHECK-NEXT: ret <4 x double> [[TMP1]]
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;
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%1 = tail call <4 x double> @llvm.x86.avx.blendv.pd.256(<4 x double> %xy, <4 x double> %ab, <4 x double> <double 0xFFFFFFFFE0000000, double 0.000000e+00, double 0xFFFFFFFFE0000000, double 0.000000e+00>)
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ret <4 x double> %1
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}
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define <4 x double> @constant_blendvpd_avx_zero(<4 x double> %xy, <4 x double> %ab) {
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; CHECK-LABEL: @constant_blendvpd_avx_zero
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; CHECK-NEXT: ret <4 x double> %xy
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%1 = tail call <4 x double> @llvm.x86.avx.blendv.pd.256(<4 x double> %xy, <4 x double> %ab, <4 x double> zeroinitializer)
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ret <4 x double> %1
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}
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define <4 x double> @constant_blendvpd_avx_dup(<4 x double> %xy, <4 x double> %sel) {
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; CHECK-LABEL: @constant_blendvpd_avx_dup
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; CHECK-NEXT: ret <4 x double> %xy
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%1 = tail call <4 x double> @llvm.x86.avx.blendv.pd.256(<4 x double> %xy, <4 x double> %xy, <4 x double> %sel)
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ret <4 x double> %1
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}
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define <8 x float> @constant_blendvps_avx(<8 x float> %xyzw, <8 x float> %abcd) {
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; CHECK-LABEL: @constant_blendvps_avx(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <8 x float> %abcd, <8 x float> %xyzw, <8 x i32> <i32 8, i32 9, i32 10, i32 3, i32 12, i32 13, i32 14, i32 7>
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; CHECK-NEXT: ret <8 x float> [[TMP1]]
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;
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%1 = tail call <8 x float> @llvm.x86.avx.blendv.ps.256(<8 x float> %xyzw, <8 x float> %abcd, <8 x float> <float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0xFFFFFFFFE0000000, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0xFFFFFFFFE0000000>)
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ret <8 x float> %1
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}
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define <8 x float> @constant_blendvps_avx_zero(<8 x float> %xyzw, <8 x float> %abcd) {
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; CHECK-LABEL: @constant_blendvps_avx_zero
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; CHECK-NEXT: ret <8 x float> %xyzw
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%1 = tail call <8 x float> @llvm.x86.avx.blendv.ps.256(<8 x float> %xyzw, <8 x float> %abcd, <8 x float> zeroinitializer)
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ret <8 x float> %1
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}
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define <8 x float> @constant_blendvps_avx_dup(<8 x float> %xyzw, <8 x float> %sel) {
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; CHECK-LABEL: @constant_blendvps_avx_dup
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; CHECK-NEXT: ret <8 x float> %xyzw
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%1 = tail call <8 x float> @llvm.x86.avx.blendv.ps.256(<8 x float> %xyzw, <8 x float> %xyzw, <8 x float> %sel)
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ret <8 x float> %1
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}
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define <32 x i8> @constant_pblendvb_avx2(<32 x i8> %xyzw, <32 x i8> %abcd) {
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; CHECK-LABEL: @constant_pblendvb_avx2(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <32 x i8> %abcd, <32 x i8> %xyzw, <32 x i32> <i32 32, i32 33, i32 2, i32 35, i32 4, i32 5, i32 6, i32 39, i32 40, i32 41, i32 10, i32 43, i32 12, i32 13, i32 14, i32 47, i32 48, i32 49, i32 18, i32 51, i32 20, i32 21, i32 22, i32 55, i32 56, i32 57, i32 26, i32 59, i32 28, i32 29, i32 30, i32 63>
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; CHECK-NEXT: ret <32 x i8> [[TMP1]]
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;
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%1 = tail call <32 x i8> @llvm.x86.avx2.pblendvb(<32 x i8> %xyzw, <32 x i8> %abcd,
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<32 x i8> <i8 0, i8 0, i8 255, i8 0, i8 255, i8 255, i8 255, i8 0,
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i8 0, i8 0, i8 255, i8 0, i8 255, i8 255, i8 255, i8 0,
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i8 0, i8 0, i8 255, i8 0, i8 255, i8 255, i8 255, i8 0,
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i8 0, i8 0, i8 255, i8 0, i8 255, i8 255, i8 255, i8 0>)
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ret <32 x i8> %1
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}
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define <32 x i8> @constant_pblendvb_avx2_zero(<32 x i8> %xyzw, <32 x i8> %abcd) {
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; CHECK-LABEL: @constant_pblendvb_avx2_zero
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; CHECK-NEXT: ret <32 x i8> %xyzw
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%1 = tail call <32 x i8> @llvm.x86.avx2.pblendvb(<32 x i8> %xyzw, <32 x i8> %abcd, <32 x i8> zeroinitializer)
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ret <32 x i8> %1
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}
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define <32 x i8> @constant_pblendvb_avx2_dup(<32 x i8> %xyzw, <32 x i8> %sel) {
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; CHECK-LABEL: @constant_pblendvb_avx2_dup
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; CHECK-NEXT: ret <32 x i8> %xyzw
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%1 = tail call <32 x i8> @llvm.x86.avx2.pblendvb(<32 x i8> %xyzw, <32 x i8> %xyzw, <32 x i8> %sel)
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ret <32 x i8> %1
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}
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declare <16 x i8> @llvm.x86.sse41.pblendvb(<16 x i8>, <16 x i8>, <16 x i8>)
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declare <4 x float> @llvm.x86.sse41.blendvps(<4 x float>, <4 x float>, <4 x float>)
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declare <2 x double> @llvm.x86.sse41.blendvpd(<2 x double>, <2 x double>, <2 x double>)
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declare <32 x i8> @llvm.x86.avx2.pblendvb(<32 x i8>, <32 x i8>, <32 x i8>)
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declare <8 x float> @llvm.x86.avx.blendv.ps.256(<8 x float>, <8 x float>, <8 x float>)
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declare <4 x double> @llvm.x86.avx.blendv.pd.256(<4 x double>, <4 x double>, <4 x double>)
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