1 ; RUN: llc %s -o - -mattr=+avx | FileCheck %s 2 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 3 target triple = "x86_64-apple-macosx" 4 5 ; For this test we used to optimize the <i1 true, i1 false, i1 false, i1 true> 6 ; mask into <i32 2147483648, i32 0, i32 0, i32 2147483648> because we thought 7 ; we would lower that into a blend where only the high bit is relevant. 8 ; However, since the whole mask is constant, this is simplified incorrectly 9 ; by the generic code, because it was expecting -1 in place of 2147483648. 10 ; 11 ; The problem does not occur without AVX, because vselect of v4i32 is not legal 12 ; nor custom. 13 ; 14 ; <rdar://problem/18675020> 15 16 ; CHECK-LABEL: test: 17 ; CHECK: vmovdqa {{.*#+}} xmm0 = [65535,0,0,65535] 18 ; CHECK: vmovdqa {{.*#+}} xmm2 = [65533,124,125,14807] 19 ; CHECK: ret 20 define void @test(<4 x i16>* %a, <4 x i16>* %b) { 21 body: 22 %predphi = select <4 x i1> <i1 true, i1 false, i1 false, i1 true>, <4 x i16> <i16 -3, i16 545, i16 4385, i16 14807>, <4 x i16> <i16 123, i16 124, i16 125, i16 127> 23 %predphi42 = select <4 x i1> <i1 true, i1 false, i1 false, i1 true>, <4 x i16> <i16 -1, i16 -1, i16 -1, i16 -1>, <4 x i16> zeroinitializer 24 store <4 x i16> %predphi, <4 x i16>* %a, align 8 25 store <4 x i16> %predphi42, <4 x i16>* %b, align 8 26 ret void 27 } 28 29 ; Improve code coverage. 30 ; 31 ; When shrinking the condition used into the select to match a blend, this 32 ; test case exercises the path where the modified node is not the root 33 ; of the condition. 34 ; 35 ; CHECK-LABEL: test2: 36 ; CHECK: vpslld $31, %xmm0, %xmm0 37 ; CHECK-NEXT: vpmovsxdq %xmm0, %xmm1 38 ; CHECK-NEXT: vpshufd $78, %xmm0, %xmm0 ## xmm0 = xmm0[2,3,0,1] 39 ; CHECK-NEXT: vpmovsxdq %xmm0, %xmm0 40 ; CHECK-NEXT: vinsertf128 $1, %xmm0, %ymm1, [[MASK:%ymm[0-9]+]] 41 ; CHECK: vblendvpd [[MASK]] 42 ; CHECK: retq 43 define void @test2(double** %call1559, i64 %indvars.iv4198, <4 x i1> %tmp1895) { 44 bb: 45 %arrayidx1928 = getelementptr inbounds double*, double** %call1559, i64 %indvars.iv4198 46 %tmp1888 = load double*, double** %arrayidx1928, align 8 47 %predphi.v.v = select <4 x i1> %tmp1895, <4 x double> <double -5.000000e-01, double -5.000000e-01, double -5.000000e-01, double -5.000000e-01>, <4 x double> <double 5.000000e-01, double 5.000000e-01, double 5.000000e-01, double 5.000000e-01> 48 %tmp1900 = bitcast double* %tmp1888 to <4 x double>* 49 store <4 x double> %predphi.v.v, <4 x double>* %tmp1900, align 8 50 ret void 51 } 52 53 ; For this test, we used to optimized the conditional mask for the blend, i.e., 54 ; we shrunk some of its bits. 55 ; However, this same mask was used in another select (%predphi31) that turned out 56 ; to be optimized into a and. In that case, the conditional mask was wrong. 57 ; 58 ; Make sure that the and is fed by the original mask. 59 ; 60 ; <rdar://problem/18819506> 61 62 ; CHECK-LABEL: test3: 63 ; Compute the mask. 64 ; CHECK: vpcmpeqd {{%xmm[0-9]+}}, {{%xmm[0-9]+}}, [[MASK:%xmm[0-9]+]] 65 ; Do not shrink the bit of the mask. 66 ; CHECK-NOT: vpslld $31, [[MASK]], {{%xmm[0-9]+}} 67 ; Use the mask in the blend. 68 ; CHECK-NEXT: vblendvps [[MASK]], %xmm{{[0-9]+}}, %xmm{{[0-9]+}}, %xmm{{[0-9]+}} 69 ; Use the mask in the and. 70 ; CHECK-NEXT: vpand LCPI2_2(%rip), [[MASK]], {{%xmm[0-9]+}} 71 ; CHECK: retq 72 define void @test3(<4 x i32> %induction30, <4 x i16>* %tmp16, <4 x i16>* %tmp17, <4 x i16> %tmp3, <4 x i16> %tmp12) { 73 %tmp6 = srem <4 x i32> %induction30, <i32 3, i32 3, i32 3, i32 3> 74 %tmp7 = icmp eq <4 x i32> %tmp6, zeroinitializer 75 %predphi = select <4 x i1> %tmp7, <4 x i16> %tmp3, <4 x i16> %tmp12 76 %predphi31 = select <4 x i1> %tmp7, <4 x i16> <i16 -1, i16 -1, i16 -1, i16 -1>, <4 x i16> zeroinitializer 77 78 store <4 x i16> %predphi31, <4 x i16>* %tmp16, align 8 79 store <4 x i16> %predphi, <4 x i16>* %tmp17, align 8 80 ret void 81 } 82 83 ; We shouldn't try to lower this directly using VSELECT because we don't have 84 ; vpblendvb in AVX1, only in AVX2. Instead, it should be expanded. 85 ; 86 ; CHECK-LABEL: PR22706: 87 ; CHECK: vpcmpgtb 88 ; CHECK: vpcmpgtb 89 define <32 x i8> @PR22706(<32 x i1> %x) { 90 %tmp = select <32 x i1> %x, <32 x i8> <i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1>, <32 x i8> <i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2> 91 ret <32 x i8> %tmp 92 } 93
