1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 < %s | FileCheck %s
4 ; Test that DAGCombiner gets helped by getKnownBitsForTargetNode() when
5 ; BITCAST nodes are involved on a big-endian target.
7 ; The EXTRACT_VECTOR_ELT is done first into an i32, and then AND:ed with
8 ; 1. The AND is not actually necessary since the element contains a CC (i1)
9 ; value. Test that the BITCAST nodes in the DAG when computing KnownBits is
10 ; handled so that the AND is removed. If this succeeds, this results in a CHI
13 define void @fun(i64 %a0) {
15 ; CHECK: # %bb.0: # %entry
16 ; CHECK-NEXT: lghi %r1, 0
17 ; CHECK-NEXT: .LBB0_1: # %lab0
18 ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
19 ; CHECK-NEXT: la %r0, 2(%r1)
20 ; CHECK-NEXT: la %r1, 1(%r1)
21 ; CHECK-NEXT: cgr %r1, %r2
22 ; CHECK-NEXT: lhi %r3, 0
23 ; CHECK-NEXT: lochie %r3, 1
24 ; CHECK-NEXT: cgr %r0, %r2
25 ; CHECK-NEXT: lhi %r0, 0
26 ; CHECK-NEXT: lochie %r0, 1
27 ; CHECK-NEXT: vlvgp %v0, %r3, %r3
28 ; CHECK-NEXT: vlvgp %v1, %r0, %r0
29 ; CHECK-NEXT: vx %v0, %v0, %v1
30 ; CHECK-NEXT: vlgvf %r0, %v0, 1
31 ; CHECK-NEXT: chi %r0, 0
32 ; CHECK-NEXT: locghie %r1, 0
33 ; CHECK-NEXT: j .LBB0_1
38 %phi = phi i64 [ %sel, %lab0 ], [ 0, %entry ]
39 %add = add nuw nsw i64 %phi, 1
40 %add2 = add nuw nsw i64 %phi, 2
41 %cmp = icmp eq i64 %add, %a0
42 %cmp2 = icmp eq i64 %add2, %a0
43 %ins = insertelement <2 x i1> undef, i1 %cmp, i32 0
44 %ins2 = insertelement <2 x i1> undef, i1 %cmp2, i32 0
45 %xor = xor <2 x i1> %ins, %ins2
46 %extr = extractelement <2 x i1> %xor, i32 0
48 %sel = select i1 %extr, i64 %add, i64 0