| ; RUN: llc -relocation-model=pic -march=x86-64 -mtriple=x86_64-unknown-unknown -mattr=+ssse3 < %s | FileCheck %s |
| |
| ; Verify that the backend correctly folds the shuffle in function 'fold_pshufb' |
| ; into a simple load from constant pool. |
| |
| define <2 x i64> @fold_pshufb() { |
| ; CHECK-LABEL: fold_pshufb: |
| ; CHECK: # BB#0: |
| ; CHECK-NEXT: movaps {{.*#+}} xmm0 = [0,0,0,0,1,0,0,0,2,0,0,0,3,0,0,0] |
| ; CHECK-NEXT: retq |
| entry: |
| %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>) |
| %1 = bitcast <16 x i8> %0 to <2 x i64> |
| ret <2 x i64> %1 |
| } |
| |
| declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>) |