| ; RUN: opt -S -instcombine %s | FileCheck %s |
| |
| define <1 x i8> @test1(<8 x i8> %in) { |
| ; CHECK-LABEL: @test1 |
| ; CHECK: shufflevector <8 x i8> %in, <8 x i8> undef, <1 x i32> <i32 5> |
| %val = extractelement <8 x i8> %in, i32 5 |
| %vec = insertelement <1 x i8> undef, i8 %val, i32 0 |
| ret <1 x i8> %vec |
| } |
| |
| define <4 x i16> @test2(<8 x i16> %in, <8 x i16> %in2) { |
| ; CHECK-LABEL: @test2 |
| ; CHECK: shufflevector <8 x i16> %in2, <8 x i16> %in, <4 x i32> <i32 11, i32 9, i32 0, i32 10> |
| %elt0 = extractelement <8 x i16> %in, i32 3 |
| %elt1 = extractelement <8 x i16> %in, i32 1 |
| %elt2 = extractelement <8 x i16> %in2, i32 0 |
| %elt3 = extractelement <8 x i16> %in, i32 2 |
| |
| %vec.0 = insertelement <4 x i16> undef, i16 %elt0, i32 0 |
| %vec.1 = insertelement <4 x i16> %vec.0, i16 %elt1, i32 1 |
| %vec.2 = insertelement <4 x i16> %vec.1, i16 %elt2, i32 2 |
| %vec.3 = insertelement <4 x i16> %vec.2, i16 %elt3, i32 3 |
| |
| ret <4 x i16> %vec.3 |
| } |
| |
| define <2 x i64> @test_vcopyq_lane_p64(<2 x i64> %a, <1 x i64> %b) { |
| ; CHECK-LABEL: @test_vcopyq_lane_p64 |
| ; CHECK-NEXT: %[[WIDEVEC:.*]] = shufflevector <1 x i64> %b, <1 x i64> undef, <2 x i32> <i32 0, i32 undef> |
| ; CHECK-NEXT: shufflevector <2 x i64> %a, <2 x i64> %[[WIDEVEC]], <2 x i32> <i32 0, i32 2> |
| ; CHECK-NEXT: ret <2 x i64> %res |
| %elt = extractelement <1 x i64> %b, i32 0 |
| %res = insertelement <2 x i64> %a, i64 %elt, i32 1 |
| ret <2 x i64> %res |
| } |
| |
| ; PR2109: https://llvm.org/bugs/show_bug.cgi?id=2109 |
| |
| define <4 x float> @widen_extract2(<4 x float> %ins, <2 x float> %ext) { |
| ; CHECK-LABEL: @widen_extract2( |
| ; CHECK-NEXT: %[[WIDEVEC:.*]] = shufflevector <2 x float> %ext, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef> |
| ; CHECK-NEXT: shufflevector <4 x float> %ins, <4 x float> %[[WIDEVEC]], <4 x i32> <i32 0, i32 4, i32 2, i32 5> |
| ; CHECK-NEXT: ret <4 x float> %i2 |
| %e1 = extractelement <2 x float> %ext, i32 0 |
| %e2 = extractelement <2 x float> %ext, i32 1 |
| %i1 = insertelement <4 x float> %ins, float %e1, i32 1 |
| %i2 = insertelement <4 x float> %i1, float %e2, i32 3 |
| ret <4 x float> %i2 |
| } |
| |
| define <4 x float> @widen_extract3(<4 x float> %ins, <3 x float> %ext) { |
| ; CHECK-LABEL: @widen_extract3( |
| ; CHECK-NEXT: %[[WIDEVEC:.*]] = shufflevector <3 x float> %ext, <3 x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 undef> |
| ; CHECK-NEXT: shufflevector <4 x float> %ins, <4 x float> %[[WIDEVEC]], <4 x i32> <i32 6, i32 5, i32 4, i32 3> |
| ; CHECK-NEXT: ret <4 x float> %i3 |
| %e1 = extractelement <3 x float> %ext, i32 0 |
| %e2 = extractelement <3 x float> %ext, i32 1 |
| %e3 = extractelement <3 x float> %ext, i32 2 |
| %i1 = insertelement <4 x float> %ins, float %e1, i32 2 |
| %i2 = insertelement <4 x float> %i1, float %e2, i32 1 |
| %i3 = insertelement <4 x float> %i2, float %e3, i32 0 |
| ret <4 x float> %i3 |
| } |
| |
| define <8 x float> @widen_extract4(<8 x float> %ins, <2 x float> %ext) { |
| ; CHECK-LABEL: @widen_extract4( |
| ; CHECK-NEXT: %[[WIDEVEC:.*]] = 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> |
| ; CHECK-NEXT: shufflevector <8 x float> %ins, <8 x float> %[[WIDEVEC]], <8 x i32> <i32 0, i32 1, i32 8, i32 3, i32 4, i32 5, i32 6, i32 7> |
| ; CHECK-NEXT: ret <8 x float> %i1 |
| %e1 = extractelement <2 x float> %ext, i32 0 |
| %i1 = insertelement <8 x float> %ins, float %e1, i32 2 |
| ret <8 x float> %i1 |
| } |
| |
| ; PR26015: https://llvm.org/bugs/show_bug.cgi?id=26015 |
| ; The widening shuffle must be inserted before any uses. |
| |
| define <8 x i16> @pr26015(<4 x i16> %t0) { |
| ; CHECK-LABEL: @pr26015( |
| ; CHECK-NEXT: %[[WIDEVEC:.*]] = 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> |
| ; CHECK-NEXT: %[[EXT:.*]] = extractelement <4 x i16> %t0, i32 2 |
| ; CHECK-NEXT: %t2 = insertelement <8 x i16> <i16 0, i16 0, i16 0, i16 undef, i16 0, i16 0, i16 undef, i16 undef>, i16 %[[EXT]], i32 3 |
| ; CHECK-NEXT: %t3 = insertelement <8 x i16> %t2, i16 0, i32 6 |
| ; CHECK-NEXT: %t5 = shufflevector <8 x i16> %t3, <8 x i16> %[[WIDEVEC]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 11> |
| ; CHECK-NEXT: ret <8 x i16> %t5 |
| %t1 = extractelement <4 x i16> %t0, i32 2 |
| %t2 = insertelement <8 x i16> zeroinitializer, i16 %t1, i32 3 |
| %t3 = insertelement <8 x i16> %t2, i16 0, i32 6 |
| %t4 = extractelement <4 x i16> %t0, i32 3 |
| %t5 = insertelement <8 x i16> %t3, i16 %t4, i32 7 |
| ret <8 x i16> %t5 |
| } |
| |
| ; PR25999: https://llvm.org/bugs/show_bug.cgi?id=25999 |
| ; TODO: The widening shuffle could be inserted at the start of the function to allow the first extract to use it. |
| |
| define <8 x i16> @pr25999(<4 x i16> %t0, i1 %b) { |
| ; CHECK-LABEL: @pr25999( |
| ; CHECK-NEXT: %t1 = extractelement <4 x i16> %t0, i32 2 |
| ; CHECK-NEXT: br i1 %b, label %if, label %end |
| ; CHECK: if: |
| ; CHECK-NEXT: %[[WIDEVEC:.*]] = 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> |
| ; 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 |
| ; CHECK-NEXT: %t3 = insertelement <8 x i16> %t2, i16 0, i32 6 |
| ; CHECK-NEXT: %t5 = shufflevector <8 x i16> %t3, <8 x i16> %[[WIDEVEC]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 11> |
| ; CHECK-NEXT: ret <8 x i16> %t5 |
| ; CHECK: end: |
| ; CHECK-NEXT: %a1 = add i16 %t1, 4 |
| ; 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 |
| ; CHECK-NEXT: ret <8 x i16> %t6 |
| |
| %t1 = extractelement <4 x i16> %t0, i32 2 |
| br i1 %b, label %if, label %end |
| |
| if: |
| %t2 = insertelement <8 x i16> zeroinitializer, i16 %t1, i32 3 |
| %t3 = insertelement <8 x i16> %t2, i16 0, i32 6 |
| %t4 = extractelement <4 x i16> %t0, i32 3 |
| %t5 = insertelement <8 x i16> %t3, i16 %t4, i32 7 |
| ret <8 x i16> %t5 |
| |
| end: |
| %a1 = add i16 %t1, 4 |
| %t6 = insertelement <8 x i16> zeroinitializer, i16 %a1, i32 0 |
| ret <8 x i16> %t6 |
| } |
| |
| ; The widening shuffle must be inserted at a valid point (after the PHIs). |
| |
| define <4 x double> @pr25999_phis1(i1 %c, <2 x double> %a, <4 x double> %b) { |
| ; CHECK-LABEL: @pr25999_phis1( |
| ; CHECK: %tmp1 = phi <2 x double> [ %a, %bb1 ], [ %r, %bb2 ] |
| ; CHECK-NEXT: %tmp2 = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ] |
| ; CHECK-NEXT: %[[WIDEVEC:.*]] = shufflevector <2 x double> %tmp1, <2 x double> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef> |
| ; CHECK-NEXT: %tmp4 = shufflevector <4 x double> %tmp2, <4 x double> %[[WIDEVEC]], <4 x i32> <i32 0, i32 1, i32 4, i32 3> |
| ; CHECK-NEXT: ret <4 x double> %tmp4 |
| bb1: |
| br i1 %c, label %bb2, label %bb3 |
| |
| bb2: |
| %r = call <2 x double> @dummy(<2 x double> %a) |
| br label %bb3 |
| |
| bb3: |
| %tmp1 = phi <2 x double> [ %a, %bb1 ], [ %r, %bb2 ] |
| %tmp2 = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ] |
| %tmp3 = extractelement <2 x double> %tmp1, i32 0 |
| %tmp4 = insertelement <4 x double> %tmp2, double %tmp3, i32 2 |
| ret <4 x double> %tmp4 |
| } |
| |
| declare <2 x double> @dummy(<2 x double>) |
| |
| define <4 x double> @pr25999_phis2(i1 %c, <2 x double> %a, <4 x double> %b) { |
| ; CHECK-LABEL: @pr25999_phis2( |
| ; CHECK: %tmp1 = phi <2 x double> [ %a, %bb1 ], [ %r, %bb2 ] |
| ; CHECK-NEXT: %tmp2 = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ] |
| ; CHECK-NEXT: %d = fadd <2 x double> %tmp1, %tmp1 |
| ; CHECK-NEXT: %[[WIDEVEC:.*]] = shufflevector <2 x double> %d, <2 x double> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef> |
| ; CHECK-NEXT: %tmp4 = shufflevector <4 x double> %tmp2, <4 x double> %[[WIDEVEC]], <4 x i32> <i32 0, i32 1, i32 4, i32 3> |
| ; CHECK-NEXT: ret <4 x double> %tmp4 |
| bb1: |
| br i1 %c, label %bb2, label %bb3 |
| |
| bb2: |
| %r = call <2 x double> @dummy(<2 x double> %a) |
| br label %bb3 |
| |
| bb3: |
| %tmp1 = phi <2 x double> [ %a, %bb1 ], [ %r, %bb2 ] |
| %tmp2 = phi <4 x double> [ %b, %bb1 ], [ zeroinitializer, %bb2 ] |
| %d = fadd <2 x double> %tmp1, %tmp1 |
| %tmp3 = extractelement <2 x double> %d, i32 0 |
| %tmp4 = insertelement <4 x double> %tmp2, double %tmp3, i32 2 |
| ret <4 x double> %tmp4 |
| } |
| |
| ; PR26354: https://llvm.org/bugs/show_bug.cgi?id=26354 |
| ; Don't create a shufflevector if we know that we're not going to replace the insertelement. |
| |
| define double @pr26354(<2 x double>* %tmp, i1 %B) { |
| ; CHECK-LABEL: @pr26354( |
| ; CHECK: %ld = load <2 x double>, <2 x double>* %tmp |
| ; CHECK-NEXT: %e1 = extractelement <2 x double> %ld, i32 0 |
| ; CHECK-NEXT: br i1 %B, label %if, label %end |
| ; CHECK: if: |
| ; CHECK-NEXT: %e2 = extractelement <2 x double> %ld, i32 1 |
| ; CHECK-NEXT: %i1 = insertelement <4 x double> |
| ; CHECK-NEXT: br label %end |
| |
| entry: |
| %ld = load <2 x double>, <2 x double>* %tmp |
| %e1 = extractelement <2 x double> %ld, i32 0 |
| %e2 = extractelement <2 x double> %ld, i32 1 |
| br i1 %B, label %if, label %end |
| |
| if: |
| %i1 = insertelement <4 x double> zeroinitializer, double %e2, i32 3 |
| br label %end |
| |
| end: |
| %ph = phi <4 x double> [ undef, %entry ], [ %i1, %if ] |
| %e3 = extractelement <4 x double> %ph, i32 1 |
| %mu = fmul double %e1, %e3 |
| ret double %mu |
| } |
| |