xref: /llvm-project/llvm/test/CodeGen/SystemZ/fp-move-13.ll (revision a1710eb3cd5823c5d14899112ca3086acbdbe9cb)
1; Test f128 moves on z14.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
4
5; VR-to-VR moves.  Since f128s are passed by reference,
6; we need to force a copy by other means.
7define void @f1(ptr %x) {
8; CHECK-LABEL: f1:
9; CHECK: vlr
10; CHECK: vleig
11; CHECK: br %r14
12  %val = load volatile fp128, ptr %x
13  %t1 = bitcast fp128 %val to <2 x i64>
14  %t2 = insertelement <2 x i64> %t1, i64 0, i32 0
15  %res = bitcast <2 x i64> %t2 to fp128
16  store volatile fp128 %res, ptr %x
17  store volatile fp128 %val, ptr %x
18  ret void
19}
20
21; Test 128-bit moves from GPRs to VRs.  i128 isn't a legitimate type,
22; so this goes through memory.
23define void @f2(ptr %a, ptr %b) {
24; CHECK-LABEL: f2:
25; CHECK: vl
26; CHECK: vst
27; CHECK: br %r14
28  %val = load i128, ptr %b
29  %res = bitcast i128 %val to fp128
30  store fp128 %res, ptr %a
31  ret void
32}
33
34; Test 128-bit moves from VRs to GPRs, with the same restriction as f2.
35define void @f3(ptr %a, ptr %b) {
36; CHECK-LABEL: f3:
37; CHECK: vl
38; CHECK: vst
39  %val = load fp128, ptr %a
40  %res = bitcast fp128 %val to i128
41  store i128 %res, ptr %b
42  ret void
43}
44
45