1 ; RUN: llc < %s -march=x86-64 -mattr=+ssse3 | FileCheck %s 2 3 ; Test that the pshufb mask comment is correct. 4 5 define <16 x i8> @test1(<16 x i8> %V) { 6 ; CHECK-LABEL: test1: 7 ; CHECK: pshufb {{.*}}# xmm0 = xmm0[1,0,0,0,0,2,0,0,0,0,3,0,0,0,0,4] 8 %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> <i8 1, i8 0, i8 0, i8 0, i8 0, i8 2, i8 0, i8 0, i8 0, i8 0, i8 3, i8 0, i8 0, i8 0, i8 0, i8 4>) 9 ret <16 x i8> %1 10 } 11 12 ; Test that indexes larger than the size of the vector are shown masked (bottom 4 bits). 13 14 define <16 x i8> @test2(<16 x i8> %V) { 15 ; CHECK-LABEL: test2: 16 ; CHECK: pshufb {{.*}}# xmm0 = xmm0[15,0,0,0,0,0,0,0,0,0,1,0,0,0,0,2] 17 %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> <i8 15, i8 0, i8 0, i8 0, i8 0, i8 16, i8 0, i8 0, i8 0, i8 0, i8 17, i8 0, i8 0, i8 0, i8 0, i8 50>) 18 ret <16 x i8> %1 19 } 20 21 ; Test that indexes with bit seven set are shown as zero. 22 23 define <16 x i8> @test3(<16 x i8> %V) { 24 ; CHECK-LABEL: test3: 25 ; CHECK: pshufb {{.*}}# xmm0 = xmm0[1,0,0,15,0,2,0,0],zero,xmm0[0,3,0,0],zero,xmm0[0,4] 26 %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %V, <16 x i8> <i8 1, i8 0, i8 0, i8 127, i8 0, i8 2, i8 0, i8 0, i8 128, i8 0, i8 3, i8 0, i8 0, i8 255, i8 0, i8 4>) 27 ret <16 x i8> %1 28 } 29 30 ; Test that we won't crash when the constant was reused for another instruction. 31 32 define <16 x i8> @test4(<2 x i64>* %V) { 33 ; CHECK-LABEL: test4 34 ; CHECK: pshufb {{.*}} 35 store <2 x i64> <i64 1084818905618843912, i64 506097522914230528>, <2 x i64>* %V, align 16 36 %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> undef, <16 x i8> <i8 8, i8 9, i8 10, i8 11, i8 12, i8 13, i8 14, i8 15, i8 0, i8 1, i8 2, i8 3, i8 4, i8 5, i8 6, i8 7>) 37 ret <16 x i8> %1 38 } 39 40 define <16 x i8> @test5() { 41 ; CHECK-LABEL: test5 42 ; CHECK: pshufb {{.*}} 43 store <2 x i64> <i64 1, i64 0>, <2 x i64>* undef, align 16 44 %l = load <2 x i64>, <2 x i64>* undef, align 16 45 %shuffle = shufflevector <2 x i64> %l, <2 x i64> undef, <2 x i32> zeroinitializer 46 store <2 x i64> %shuffle, <2 x i64>* undef, align 16 47 %1 = load <16 x i8>, <16 x i8>* undef, align 16 48 %2 = call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> undef, <16 x i8> %1) 49 ret <16 x i8> %2 50 } 51 52 declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>) nounwind readnone 53
