1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
4 ; Test that the dag combiner can understand that some vector operands are
5 ; all-zeros and then optimize the logical operations.
7 define void @f1(<2 x i64> %a0) {
9 ; CHECK: # %bb.0: # %bb
10 ; CHECK-NEXT: vlrepg %v0, 0(%r1)
11 ; CHECK-NEXT: vgbm %v1, 0
12 ; CHECK-NEXT: vceqg %v2, %v24, %v1
13 ; CHECK-NEXT: vn %v0, %v0, %v0
14 ; CHECK-NEXT: vno %v2, %v2, %v2
15 ; CHECK-NEXT: vceqg %v0, %v0, %v1
16 ; CHECK-NEXT: vx %v0, %v0, %v2
17 ; CHECK-NEXT: vnc %v0, %v2, %v0
18 ; CHECK-NEXT: vlgvf %r0, %v0, 1
19 ; CHECK-NEXT: tmll %r0, 1
20 ; CHECK-NEXT: # %bb.1: # %bb15
23 %tmp = shufflevector <2 x i64> undef, <2 x i64> undef, <2 x i32> zeroinitializer
27 %tmp2 = load i64, i64* undef, align 8
28 %tmp3 = insertelement <2 x i64> undef, i64 %tmp2, i32 1
29 %tmp4 = icmp ne <2 x i64> %a0, zeroinitializer
30 %tmp5 = xor <2 x i1> %tmp4, zeroinitializer
31 %tmp6 = xor <2 x i1> zeroinitializer, %tmp5
32 %tmp7 = and <2 x i64> %tmp3, %tmp
33 %tmp8 = icmp ne <2 x i64> %tmp7, zeroinitializer
34 %tmp9 = xor <2 x i1> zeroinitializer, %tmp8
35 %tmp10 = icmp ne <2 x i64> %a0, zeroinitializer
36 %tmp11 = xor <2 x i1> %tmp10, %tmp9
37 %tmp12 = and <2 x i1> %tmp6, %tmp11
38 %tmp13 = extractelement <2 x i1> %tmp12, i32 0
39 br i1 %tmp13, label %bb14, label %bb15
42 store i64 undef, i64* undef, align 8
45 bb15: ; preds = %bb14, %bb1