3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
5 declare i32 @foo(i32 *)
7 ; Test the simple case.
8 define i32 @f1(i32 %easy, i32 *%ptr, i32 %limit) {
11 ; CHECK: loche %r2, 0(%r3)
13 %cond = icmp ult i32 %limit, 42
14 %other = load i32 , i32 *%ptr
15 %res = select i1 %cond, i32 %easy, i32 %other
19 ; ...and again with the operands swapped.
20 define i32 @f2(i32 %easy, i32 *%ptr, i32 %limit) {
23 ; CHECK: locl %r2, 0(%r3)
25 %cond = icmp ult i32 %limit, 42
26 %other = load i32 , i32 *%ptr
27 %res = select i1 %cond, i32 %other, i32 %easy
31 ; Check the high end of the aligned LOC range.
32 define i32 @f3(i32 %easy, i32 *%base, i32 %limit) {
35 ; CHECK: loche %r2, 524284(%r3)
37 %ptr = getelementptr i32, i32 *%base, i64 131071
38 %cond = icmp ult i32 %limit, 42
39 %other = load i32 , i32 *%ptr
40 %res = select i1 %cond, i32 %easy, i32 %other
44 ; Check the next word up. Other sequences besides this one would be OK.
45 define i32 @f4(i32 %easy, i32 *%base, i32 %limit) {
47 ; CHECK: agfi %r3, 524288
49 ; CHECK: loche %r2, 0(%r3)
51 %ptr = getelementptr i32, i32 *%base, i64 131072
52 %cond = icmp ult i32 %limit, 42
53 %other = load i32 , i32 *%ptr
54 %res = select i1 %cond, i32 %easy, i32 %other
58 ; Check the low end of the LOC range.
59 define i32 @f5(i32 %easy, i32 *%base, i32 %limit) {
62 ; CHECK: loche %r2, -524288(%r3)
64 %ptr = getelementptr i32, i32 *%base, i64 -131072
65 %cond = icmp ult i32 %limit, 42
66 %other = load i32 , i32 *%ptr
67 %res = select i1 %cond, i32 %easy, i32 %other
71 ; Check the next word down, with the same comments as f4.
72 define i32 @f6(i32 %easy, i32 *%base, i32 %limit) {
74 ; CHECK: agfi %r3, -524292
76 ; CHECK: loche %r2, 0(%r3)
78 %ptr = getelementptr i32, i32 *%base, i64 -131073
79 %cond = icmp ult i32 %limit, 42
80 %other = load i32 , i32 *%ptr
81 %res = select i1 %cond, i32 %easy, i32 %other
85 ; Try a frame index base.
86 define i32 @f7(i32 %alt, i32 %limit) {
88 ; CHECK: brasl %r14, foo@PLT
89 ; CHECK: loche %r2, {{[0-9]+}}(%r15)
92 %easy = call i32 @foo(i32 *%ptr)
93 %cond = icmp ult i32 %limit, 42
94 %other = load i32 , i32 *%ptr
95 %res = select i1 %cond, i32 %easy, i32 %other
99 ; Try a case when an index is involved.
100 define i32 @f8(i32 %easy, i32 %limit, i64 %base, i64 %index) {
102 ; CHECK: clfi %r3, 42
103 ; CHECK: loche %r2, 0({{%r[1-5]}})
105 %add = add i64 %base, %index
106 %ptr = inttoptr i64 %add to i32 *
107 %cond = icmp ult i32 %limit, 42
108 %other = load i32 , i32 *%ptr
109 %res = select i1 %cond, i32 %easy, i32 %other
113 ; Test that conditionally-executed loads do not use LOC, since it is allowed
114 ; to trap even when the condition is false.
115 define i32 @f9(i32 %easy, i32 %limit, i32 *%ptr) {
120 %cmp = icmp ule i32 %easy, %limit
121 br i1 %cmp, label %load, label %exit
124 %other = load i32 , i32 *%ptr
128 %res = phi i32 [ %easy, %entry ], [ %other, %load ]