1; Test floating-point truncations.
2;
3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
4; RUN:   | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s
5; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 \
6; RUN:   | FileCheck -check-prefix=CHECK -check-prefix=CHECK-VECTOR %s
7
8; Test f64->f32.
9define float @f1(double %d1, double %d2) {
10; CHECK-LABEL: f1:
11; CHECK-SCALAR: ledbr %f0, %f2
12; CHECK-VECTOR: ledbra %f0, 0, %f2, 0
13; CHECK: br %r14
14  %res = fptrunc double %d2 to float
15  ret float %res
16}
17
18; Test f128->f32.
19define float @f2(fp128 *%ptr) {
20; CHECK-LABEL: f2:
21; CHECK: lexbr %f0, %f0
22; CHECK: br %r14
23  %val = load fp128 , fp128 *%ptr
24  %res = fptrunc fp128 %val to float
25  ret float %res
26}
27
28; Make sure that we don't use %f0 as the destination of LEXBR when %f2
29; is still live.
30define void @f3(float *%dst, fp128 *%ptr, float %d1, float %d2) {
31; CHECK-LABEL: f3:
32; CHECK: lexbr %f1, %f1
33; CHECK: aebr %f1, %f2
34; CHECK: ste %f1, 0(%r2)
35; CHECK: br %r14
36  %val = load fp128 , fp128 *%ptr
37  %conv = fptrunc fp128 %val to float
38  %res = fadd float %conv, %d2
39  store float %res, float *%dst
40  ret void
41}
42
43; Test f128->f64.
44define double @f4(fp128 *%ptr) {
45; CHECK-LABEL: f4:
46; CHECK: ldxbr %f0, %f0
47; CHECK: br %r14
48  %val = load fp128 , fp128 *%ptr
49  %res = fptrunc fp128 %val to double
50  ret double %res
51}
52
53; Like f3, but for f128->f64.
54define void @f5(double *%dst, fp128 *%ptr, double %d1, double %d2) {
55; CHECK-LABEL: f5:
56; CHECK: ldxbr %f1, %f1
57; CHECK-SCALAR: adbr %f1, %f2
58; CHECK-SCALAR: std %f1, 0(%r2)
59; CHECK-VECTOR: wfadb [[REG:%f[0-9]+]], %f1, %f2
60; CHECK-VECTOR: std [[REG]], 0(%r2)
61; CHECK: br %r14
62  %val = load fp128 , fp128 *%ptr
63  %conv = fptrunc fp128 %val to double
64  %res = fadd double %conv, %d2
65  store double %res, double *%dst
66  ret void
67}
68