1 ; Test extensions of f64 to f128.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 ; Check register extension.
6 define void @f1(fp128 *%dst, double %val) {
8 ; CHECK: lxdbr %f0, %f0
9 ; CHECK: std %f0, 0(%r2)
10 ; CHECK: std %f2, 8(%r2)
12 %res = fpext double %val to fp128
13 store fp128 %res, fp128 *%dst
17 ; Check the low end of the LXDB range.
18 define void @f2(fp128 *%dst, double *%ptr) {
20 ; CHECK: lxdb %f0, 0(%r3)
21 ; CHECK: std %f0, 0(%r2)
22 ; CHECK: std %f2, 8(%r2)
24 %val = load double *%ptr
25 %res = fpext double %val to fp128
26 store fp128 %res, fp128 *%dst
30 ; Check the high end of the aligned LXDB range.
31 define void @f3(fp128 *%dst, double *%base) {
33 ; CHECK: lxdb %f0, 4088(%r3)
34 ; CHECK: std %f0, 0(%r2)
35 ; CHECK: std %f2, 8(%r2)
37 %ptr = getelementptr double *%base, i64 511
38 %val = load double *%ptr
39 %res = fpext double %val to fp128
40 store fp128 %res, fp128 *%dst
44 ; Check the next doubleword up, which needs separate address logic.
45 ; Other sequences besides this one would be OK.
46 define void @f4(fp128 *%dst, double *%base) {
48 ; CHECK: aghi %r3, 4096
49 ; CHECK: lxdb %f0, 0(%r3)
50 ; CHECK: std %f0, 0(%r2)
51 ; CHECK: std %f2, 8(%r2)
53 %ptr = getelementptr double *%base, i64 512
54 %val = load double *%ptr
55 %res = fpext double %val to fp128
56 store fp128 %res, fp128 *%dst
60 ; Check negative displacements, which also need separate address logic.
61 define void @f5(fp128 *%dst, double *%base) {
64 ; CHECK: lxdb %f0, 0(%r3)
65 ; CHECK: std %f0, 0(%r2)
66 ; CHECK: std %f2, 8(%r2)
68 %ptr = getelementptr double *%base, i64 -1
69 %val = load double *%ptr
70 %res = fpext double %val to fp128
71 store fp128 %res, fp128 *%dst
75 ; Check that LXDB allows indices.
76 define void @f6(fp128 *%dst, double *%base, i64 %index) {
78 ; CHECK: sllg %r1, %r4, 3
79 ; CHECK: lxdb %f0, 800(%r1,%r3)
80 ; CHECK: std %f0, 0(%r2)
81 ; CHECK: std %f2, 8(%r2)
83 %ptr1 = getelementptr double *%base, i64 %index
84 %ptr2 = getelementptr double *%ptr1, i64 100
85 %val = load double *%ptr2
86 %res = fpext double %val to fp128
87 store fp128 %res, fp128 *%dst