xref: /llvm-project/llvm/test/CodeGen/SystemZ/dag-combine-06.ll (revision a1710eb3cd5823c5d14899112ca3086acbdbe9cb)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z15 | FileCheck %s
3;
4; Test that DAGCombiner does not change the addressing as the displacements
5; are known to be out of range. Only one addition is needed.
6
7define void @fun(ptr %Src, ptr %Dst) {
8; CHECK-LABEL: fun:
9; CHECK:       # %bb.0:
10; CHECK-NEXT:    aghi %r2, 4096
11; CHECK-NEXT:    vl %v0, 0(%r2), 3
12; CHECK-NEXT:    vst %v0, 0(%r3), 3
13; CHECK-NEXT:    vl %v0, 16(%r2), 3
14; CHECK-NEXT:    vst %v0, 0(%r3), 3
15; CHECK-NEXT:    br %r14
16
17  %splitgep = getelementptr i8, ptr %Src, i64 4096
18  %V0 = load <2 x i64>, ptr %splitgep, align 8
19  store volatile <2 x i64> %V0, ptr %Dst, align 8
20
21  %1 = getelementptr i8, ptr %splitgep, i64 16
22  %V1 = load <2 x i64>, ptr %1, align 8
23  store volatile <2 x i64> %V1, ptr %Dst, align 8
24
25  ret void
26}
27