1; Test floating-point truncations.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
4
5; Test f64->f32.
6define float @f1(double %d1, double %d2) {
7; CHECK-LABEL: f1:
8; CHECK: ledbr %f0, %f2
9; CHECK: br %r14
10  %res = fptrunc double %d2 to float
11  ret float %res
12}
13
14; Test f128->f32.
15define float @f2(fp128 *%ptr) {
16; CHECK-LABEL: f2:
17; CHECK: lexbr %f0, %f0
18; CHECK: br %r14
19  %val = load fp128 *%ptr
20  %res = fptrunc fp128 %val to float
21  ret float %res
22}
23
24; Make sure that we don't use %f0 as the destination of LEXBR when %f2
25; is still live.
26define void @f3(float *%dst, fp128 *%ptr, float %d1, float %d2) {
27; CHECK-LABEL: f3:
28; CHECK: lexbr %f1, %f1
29; CHECK: aebr %f1, %f2
30; CHECK: ste %f1, 0(%r2)
31; CHECK: br %r14
32  %val = load fp128 *%ptr
33  %conv = fptrunc fp128 %val to float
34  %res = fadd float %conv, %d2
35  store float %res, float *%dst
36  ret void
37}
38
39; Test f128->f64.
40define double @f4(fp128 *%ptr) {
41; CHECK-LABEL: f4:
42; CHECK: ldxbr %f0, %f0
43; CHECK: br %r14
44  %val = load fp128 *%ptr
45  %res = fptrunc fp128 %val to double
46  ret double %res
47}
48
49; Like f3, but for f128->f64.
50define void @f5(double *%dst, fp128 *%ptr, double %d1, double %d2) {
51; CHECK-LABEL: f5:
52; CHECK: ldxbr %f1, %f1
53; CHECK: adbr %f1, %f2
54; CHECK: std %f1, 0(%r2)
55; CHECK: br %r14
56  %val = load fp128 *%ptr
57  %conv = fptrunc fp128 %val to double
58  %res = fadd double %conv, %d2
59  store double %res, double *%dst
60  ret void
61}
62