1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -relocation-model=pic -mtriple=x86_64-unknown-unknown -mattr=+ssse3 < %s | FileCheck %s
3; RUN: llc -mtriple=x86_64-unknown-unknown -mattr=+ssse3 < %s | FileCheck %s
4
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: # %entry
11; CHECK-NEXT:    movaps {{.*#+}} xmm0 = [0,0,0,0,1,0,0,0,2,0,0,0,3,0,0,0]
12; CHECK-NEXT:    retq
13entry:
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> %1
17}
18
19; The pshufb from function @pr24562 was wrongly folded into its first operand
20; 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: # %entry
27; CHECK-NEXT:    xorps %xmm0, %xmm0
28; CHECK-NEXT:    retq
29entry:
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>) #2
31  %1 = bitcast <16 x i8> %0 to <2 x i64>
32  ret <2 x i64> %1
33}
34
35declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>)
36