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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: llc -relocation-model=pic -mtriple=x86_64-unknown-unknown -mattr=+ssse3 < %s | FileCheck %s3; RUN: llc -mtriple=x86_64-unknown-unknown -mattr=+ssse3 < %s | FileCheck %s4 5; Verify that the backend correctly folds the shuffle in function 'fold_pshufb'6; into a simple load from constant pool.7 8define <2 x i64> @fold_pshufb() {9; CHECK-LABEL: fold_pshufb:10; CHECK: # %bb.0: # %entry11; CHECK-NEXT: movaps {{.*#+}} xmm0 = [0,0,0,0,1,0,0,0,2,0,0,0,3,0,0,0]12; CHECK-NEXT: retq13entry:14 %0 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> <i8 0, i8 0, i8 0, i8 0, i8 1, i8 0, i8 0, i8 0, i8 2, i8 0, i8 0, i8 0, i8 3, i8 0, i8 0, i8 0>, <16 x i8> <i8 0, i8 1, i8 2, i8 3, i8 4, i8 5, i8 6, i8 7, i8 8, i8 9, i8 10, i8 11, i8 12, i8 13, i8 14, i8 15>)15 %1 = bitcast <16 x i8> %0 to <2 x i64>16 ret <2 x i64> %117}18 19; The pshufb from function @pr24562 was wrongly folded into its first operand20; as a result of a late target shuffle combine on the legalized selection dag.21;22; Check that the pshufb is correctly folded to a zero vector.23 24define <2 x i64> @pr24562() {25; CHECK-LABEL: pr24562:26; CHECK: # %bb.0: # %entry27; CHECK-NEXT: xorps %xmm0, %xmm028; CHECK-NEXT: retq29entry:30 %0 = call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 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>, <16 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>) #231 %1 = bitcast <16 x i8> %0 to <2 x i64>32 ret <2 x i64> %133}34 35declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>)36