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https://github.com/RPCS3/llvm-mirror.git
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3a42ddfbd2
Removing the limitation in visitInsertElementInst() causes several regressions because we're not prepared to fold sequences of shuffles or inserts and extracts separated by shuffles. Fixing that appears to be a difficult mission because we are purposely trying to avoid creating shuffles with arbitrary shuffle masks because some targets may choke on those. https://llvm.org/bugs/show_bug.cgi?id=30923 llvm-svn: 286423
267 lines
11 KiB
LLVM
267 lines
11 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine %s | FileCheck %s
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define <1 x i8> @test1(<8 x i8> %in) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[VEC:%.*]] = shufflevector <8 x i8> %in, <8 x i8> undef, <1 x i32> <i32 5>
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; CHECK-NEXT: ret <1 x i8> [[VEC]]
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;
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%val = extractelement <8 x i8> %in, i32 5
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%vec = insertelement <1 x i8> undef, i8 %val, i32 0
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ret <1 x i8> %vec
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}
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define <4 x i16> @test2(<8 x i16> %in, <8 x i16> %in2) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[VEC_3:%.*]] = shufflevector <8 x i16> %in2, <8 x i16> %in, <4 x i32> <i32 11, i32 9, i32 0, i32 10>
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; CHECK-NEXT: ret <4 x i16> [[VEC_3]]
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;
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%elt0 = extractelement <8 x i16> %in, i32 3
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%elt1 = extractelement <8 x i16> %in, i32 1
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%elt2 = extractelement <8 x i16> %in2, i32 0
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%elt3 = extractelement <8 x i16> %in, i32 2
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%vec.0 = insertelement <4 x i16> undef, i16 %elt0, i32 0
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%vec.1 = insertelement <4 x i16> %vec.0, i16 %elt1, i32 1
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%vec.2 = insertelement <4 x i16> %vec.1, i16 %elt2, i32 2
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%vec.3 = insertelement <4 x i16> %vec.2, i16 %elt3, i32 3
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ret <4 x i16> %vec.3
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}
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define <2 x i64> @test_vcopyq_lane_p64(<2 x i64> %a, <1 x i64> %b) {
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; CHECK-LABEL: @test_vcopyq_lane_p64(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <1 x i64> %b, <1 x i64> undef, <2 x i32> <i32 0, i32 undef>
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; CHECK-NEXT: [[RES:%.*]] = shufflevector <2 x i64> %a, <2 x i64> [[TMP1]], <2 x i32> <i32 0, i32 2>
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; CHECK-NEXT: ret <2 x i64> [[RES]]
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;
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%elt = extractelement <1 x i64> %b, i32 0
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%res = insertelement <2 x i64> %a, i64 %elt, i32 1
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ret <2 x i64> %res
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}
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; PR2109: https://llvm.org/bugs/show_bug.cgi?id=2109
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define <4 x float> @widen_extract2(<4 x float> %ins, <2 x float> %ext) {
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; CHECK-LABEL: @widen_extract2(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <2 x float> %ext, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
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; CHECK-NEXT: [[I2:%.*]] = shufflevector <4 x float> %ins, <4 x float> [[TMP1]], <4 x i32> <i32 0, i32 4, i32 2, i32 5>
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; CHECK-NEXT: ret <4 x float> [[I2]]
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;
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%e1 = extractelement <2 x float> %ext, i32 0
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%e2 = extractelement <2 x float> %ext, i32 1
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%i1 = insertelement <4 x float> %ins, float %e1, i32 1
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%i2 = insertelement <4 x float> %i1, float %e2, i32 3
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ret <4 x float> %i2
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}
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define <4 x float> @widen_extract3(<4 x float> %ins, <3 x float> %ext) {
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; CHECK-LABEL: @widen_extract3(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <3 x float> %ext, <3 x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 undef>
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; CHECK-NEXT: [[I3:%.*]] = shufflevector <4 x float> %ins, <4 x float> [[TMP1]], <4 x i32> <i32 6, i32 5, i32 4, i32 3>
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; CHECK-NEXT: ret <4 x float> [[I3]]
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;
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%e1 = extractelement <3 x float> %ext, i32 0
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%e2 = extractelement <3 x float> %ext, i32 1
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%e3 = extractelement <3 x float> %ext, i32 2
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%i1 = insertelement <4 x float> %ins, float %e1, i32 2
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%i2 = insertelement <4 x float> %i1, float %e2, i32 1
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%i3 = insertelement <4 x float> %i2, float %e3, i32 0
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ret <4 x float> %i3
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}
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define <8 x float> @widen_extract4(<8 x float> %ins, <2 x float> %ext) {
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; CHECK-LABEL: @widen_extract4(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <2 x float> %ext, <2 x float> undef, <8 x i32> <i32 0, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
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; CHECK-NEXT: [[I1:%.*]] = shufflevector <8 x float> %ins, <8 x float> [[TMP1]], <8 x i32> <i32 0, i32 1, i32 8, i32 3, i32 4, i32 5, i32 6, i32 7>
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; CHECK-NEXT: ret <8 x float> [[I1]]
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;
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%e1 = extractelement <2 x float> %ext, i32 0
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%i1 = insertelement <8 x float> %ins, float %e1, i32 2
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ret <8 x float> %i1
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}
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; PR26015: https://llvm.org/bugs/show_bug.cgi?id=26015
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; The widening shuffle must be inserted before any uses.
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define <8 x i16> @pr26015(<4 x i16> %t0) {
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; CHECK-LABEL: @pr26015(
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i16> %t0, <4 x i16> undef, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 3, i32 undef, i32 undef, i32 undef, i32 undef>
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; CHECK-NEXT: [[TMP2:%.*]] = extractelement <4 x i16> %t0, i32 2
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; CHECK-NEXT: [[T2:%.*]] = insertelement <8 x i16> <i16 0, i16 0, i16 0, i16 undef, i16 0, i16 0, i16 undef, i16 undef>, i16 [[TMP2]], i32 3
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; CHECK-NEXT: [[T3:%.*]] = insertelement <8 x i16> [[T2]], i16 0, i32 6
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; CHECK-NEXT: [[T5:%.*]] = shufflevector <8 x i16> [[T3]], <8 x i16> [[TMP1]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 11>
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; CHECK-NEXT: ret <8 x i16> [[T5]]
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;
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%t1 = extractelement <4 x i16> %t0, i32 2
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%t2 = insertelement <8 x i16> zeroinitializer, i16 %t1, i32 3
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%t3 = insertelement <8 x i16> %t2, i16 0, i32 6
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%t4 = extractelement <4 x i16> %t0, i32 3
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%t5 = insertelement <8 x i16> %t3, i16 %t4, i32 7
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ret <8 x i16> %t5
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}
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; PR25999: https://llvm.org/bugs/show_bug.cgi?id=25999
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; TODO: The widening shuffle could be inserted at the start of the function to allow the first extract to use it.
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define <8 x i16> @pr25999(<4 x i16> %t0, i1 %b) {
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; CHECK-LABEL: @pr25999(
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; CHECK-NEXT: [[T1:%.*]] = extractelement <4 x i16> %t0, i32 2
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; CHECK-NEXT: br i1 %b, label %if, label %end
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; CHECK: if:
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; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i16> %t0, <4 x i16> undef, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 3, i32 undef, i32 undef, i32 undef, i32 undef>
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; CHECK-NEXT: [[T2:%.*]] = insertelement <8 x i16> <i16 0, i16 0, i16 0, i16 undef, i16 0, i16 0, i16 undef, i16 undef>, i16 [[T1]], i32 3
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; CHECK-NEXT: [[T3:%.*]] = insertelement <8 x i16> [[T2]], i16 0, i32 6
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; CHECK-NEXT: [[T5:%.*]] = shufflevector <8 x i16> [[T3]], <8 x i16> [[TMP1]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 11>
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; CHECK-NEXT: ret <8 x i16> [[T5]]
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; CHECK: end:
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; CHECK-NEXT: [[A1:%.*]] = add i16 [[T1]], 4
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; CHECK-NEXT: [[T6:%.*]] = insertelement <8 x i16> <i16 undef, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0, i16 0>, i16 [[A1]], i32 0
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; CHECK-NEXT: ret <8 x i16> [[T6]]
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;
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%t1 = extractelement <4 x i16> %t0, i32 2
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br i1 %b, label %if, label %end
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if:
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%t2 = insertelement <8 x i16> zeroinitializer, i16 %t1, i32 3
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%t3 = insertelement <8 x i16> %t2, i16 0, i32 6
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%t4 = extractelement <4 x i16> %t0, i32 3
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%t5 = insertelement <8 x i16> %t3, i16 %t4, i32 7
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ret <8 x i16> %t5
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end:
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%a1 = add i16 %t1, 4
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%t6 = insertelement <8 x i16> zeroinitializer, i16 %a1, i32 0
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ret <8 x i16> %t6
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}
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; The widening shuffle must be inserted at a valid point (after the PHIs).
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define <4 x double> @pr25999_phis1(i1 %c, <2 x double> %a, <4 x double> %b) {
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; CHECK-LABEL: @pr25999_phis1(
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; CHECK-NEXT: bb1:
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; CHECK-NEXT: br i1 %c, label %bb2, label %bb3
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; CHECK: bb2:
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; CHECK-NEXT: [[R:%.*]] = call <2 x double> @dummy(<2 x double> %a)
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; CHECK-NEXT: br label %bb3
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; CHECK: bb3:
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; CHECK-NEXT: [[TMP1:%.*]] = phi <2 x double> [ %a, %bb1 ], [ [[R]], %bb2 ]
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; CHECK-NEXT: [[TMP2:%.*]] = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ]
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; CHECK-NEXT: [[TMP0:%.*]] = shufflevector <2 x double> [[TMP1]], <2 x double> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
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; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x double> [[TMP2]], <4 x double> [[TMP0]], <4 x i32> <i32 0, i32 1, i32 4, i32 3>
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; CHECK-NEXT: ret <4 x double> [[TMP4]]
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;
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bb1:
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br i1 %c, label %bb2, label %bb3
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bb2:
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%r = call <2 x double> @dummy(<2 x double> %a)
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br label %bb3
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bb3:
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%tmp1 = phi <2 x double> [ %a, %bb1 ], [ %r, %bb2 ]
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%tmp2 = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ]
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%tmp3 = extractelement <2 x double> %tmp1, i32 0
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%tmp4 = insertelement <4 x double> %tmp2, double %tmp3, i32 2
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ret <4 x double> %tmp4
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}
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declare <2 x double> @dummy(<2 x double>)
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define <4 x double> @pr25999_phis2(i1 %c, <2 x double> %a, <4 x double> %b) {
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; CHECK-LABEL: @pr25999_phis2(
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; CHECK-NEXT: bb1:
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; CHECK-NEXT: br i1 %c, label %bb2, label %bb3
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; CHECK: bb2:
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; CHECK-NEXT: [[R:%.*]] = call <2 x double> @dummy(<2 x double> %a)
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; CHECK-NEXT: br label %bb3
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; CHECK: bb3:
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; CHECK-NEXT: [[TMP1:%.*]] = phi <2 x double> [ %a, %bb1 ], [ [[R]], %bb2 ]
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; CHECK-NEXT: [[TMP2:%.*]] = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ]
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; CHECK-NEXT: [[D:%.*]] = fadd <2 x double> [[TMP1]], [[TMP1]]
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; CHECK-NEXT: [[TMP0:%.*]] = shufflevector <2 x double> [[D]], <2 x double> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
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; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <4 x double> [[TMP2]], <4 x double> [[TMP0]], <4 x i32> <i32 0, i32 1, i32 4, i32 3>
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; CHECK-NEXT: ret <4 x double> [[TMP4]]
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;
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bb1:
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br i1 %c, label %bb2, label %bb3
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bb2:
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%r = call <2 x double> @dummy(<2 x double> %a)
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br label %bb3
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bb3:
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%tmp1 = phi <2 x double> [ %a, %bb1 ], [ %r, %bb2 ]
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%tmp2 = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ]
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%d = fadd <2 x double> %tmp1, %tmp1
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%tmp3 = extractelement <2 x double> %d, i32 0
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%tmp4 = insertelement <4 x double> %tmp2, double %tmp3, i32 2
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ret <4 x double> %tmp4
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}
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; PR26354: https://llvm.org/bugs/show_bug.cgi?id=26354
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; Don't create a shufflevector if we know that we're not going to replace the insertelement.
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define double @pr26354(<2 x double>* %tmp, i1 %B) {
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; CHECK-LABEL: @pr26354(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[LD:%.*]] = load <2 x double>, <2 x double>* %tmp, align 16
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; CHECK-NEXT: [[E1:%.*]] = extractelement <2 x double> [[LD]], i32 0
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; CHECK-NEXT: br i1 %B, label %if, label %end
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; CHECK: if:
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; CHECK-NEXT: [[E2:%.*]] = extractelement <2 x double> [[LD]], i32 1
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; CHECK-NEXT: [[I1:%.*]] = insertelement <4 x double> <double 0.000000e+00, double 0.000000e+00, double 0.000000e+00, double undef>, double [[E2]], i32 3
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; CHECK-NEXT: br label %end
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; CHECK: end:
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; CHECK-NEXT: [[PH:%.*]] = phi <4 x double> [ undef, %entry ], [ [[I1]], %if ]
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; CHECK-NEXT: [[E3:%.*]] = extractelement <4 x double> [[PH]], i32 1
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; CHECK-NEXT: [[MU:%.*]] = fmul double [[E1]], [[E3]]
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; CHECK-NEXT: ret double [[MU]]
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;
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entry:
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%ld = load <2 x double>, <2 x double>* %tmp
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%e1 = extractelement <2 x double> %ld, i32 0
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%e2 = extractelement <2 x double> %ld, i32 1
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br i1 %B, label %if, label %end
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if:
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%i1 = insertelement <4 x double> zeroinitializer, double %e2, i32 3
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br label %end
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end:
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%ph = phi <4 x double> [ undef, %entry ], [ %i1, %if ]
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%e3 = extractelement <4 x double> %ph, i32 1
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%mu = fmul double %e1, %e3
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ret double %mu
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}
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; https://llvm.org/bugs/show_bug.cgi?id=30923
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; Delete the widening shuffle if we're not going to reduce the extract/insert to a shuffle.
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define <4 x float> @PR30923(<2 x float> %x) {
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; CHECK-LABEL: @PR30923(
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; CHECK-NEXT: bb1:
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; CHECK-NEXT: [[EXT1:%.*]] = extractelement <2 x float> %x, i32 1
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; CHECK-NEXT: store float [[EXT1]], float* undef, align 4
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; CHECK-NEXT: br label %bb2
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; CHECK: bb2:
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; CHECK-NEXT: [[EXT2:%.*]] = extractelement <2 x float> %x, i32 0
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; CHECK-NEXT: [[INS1:%.*]] = insertelement <4 x float> <float 0.000000e+00, float 0.000000e+00, float undef, float undef>, float [[EXT2]], i32 2
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; CHECK-NEXT: [[INS2:%.*]] = insertelement <4 x float> [[INS1]], float [[EXT1]], i32 3
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; CHECK-NEXT: ret <4 x float> [[INS2]]
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;
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bb1:
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%ext1 = extractelement <2 x float> %x, i32 1
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store float %ext1, float* undef, align 4
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br label %bb2
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bb2:
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%widen = shufflevector <2 x float> %x, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
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%ext2 = extractelement <4 x float> %widen, i32 0
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%ins1 = insertelement <4 x float> <float 0.0, float 0.0, float undef, float undef>, float %ext2, i32 2
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%ins2 = insertelement <4 x float> %ins1, float %ext1, i32 3
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ret <4 x float> %ins2
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}
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