xref: /llvm-project/llvm/test/CodeGen/SystemZ/fp-conv-19.ll (revision a65ccc1b9fe740c9f65d9cf2b627de50278aad56) 
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2
3; Test f128 to i128 bitcasts.
4;
5; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
6; RUN:   | FileCheck -check-prefix=Z10 %s
7;
8; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 \
9; RUN:   | FileCheck -check-prefix=Z14 %s
10
11define i64 @extract_float_hi(ptr %0, ptr %1) {
12; Z10-LABEL: extract_float_hi:
13; Z10:       # %bb.0: # %entry
14; Z10-NEXT:    ld %f0, 0(%r2)
15; Z10-NEXT:    ld %f2, 8(%r2)
16; Z10-NEXT:    ld %f1, 0(%r3)
17; Z10-NEXT:    ld %f3, 8(%r3)
18; Z10-NEXT:    axbr %f1, %f0
19; Z10-NEXT:    lgdr %r2, %f1
20; Z10-NEXT:    br %r14
21;
22; Z14-LABEL: extract_float_hi:
23; Z14:       # %bb.0: # %entry
24; Z14-NEXT:    vl %v0, 0(%r2), 3
25; Z14-NEXT:    vl %v1, 0(%r3), 3
26; Z14-NEXT:    wfaxb %v0, %v0, %v1
27; Z14-NEXT:    vlgvg %r2, %v0, 0
28; Z14-NEXT:    br %r14
29entry:
30  %x = load fp128, ptr %0
31  %y = load fp128, ptr %1
32  %add = fadd fp128 %x, %y
33  %2 = bitcast fp128 %add to i128
34  %u.sroa.0.0.extract.shift = lshr i128 %2, 64
35  %u.sroa.0.0.extract.trunc = trunc i128 %u.sroa.0.0.extract.shift to i64
36  ret i64 %u.sroa.0.0.extract.trunc
37}
38
39define i64 @extract_float_lo(ptr %0, ptr %1) {
40; Z10-LABEL: extract_float_lo:
41; Z10:       # %bb.0: # %entry
42; Z10-NEXT:    ld %f0, 0(%r2)
43; Z10-NEXT:    ld %f2, 8(%r2)
44; Z10-NEXT:    ld %f1, 0(%r3)
45; Z10-NEXT:    ld %f3, 8(%r3)
46; Z10-NEXT:    axbr %f1, %f0
47; Z10-NEXT:    lgdr %r2, %f3
48; Z10-NEXT:    br %r14
49;
50; Z14-LABEL: extract_float_lo:
51; Z14:       # %bb.0: # %entry
52; Z14-NEXT:    vl %v0, 0(%r2), 3
53; Z14-NEXT:    vl %v1, 0(%r3), 3
54; Z14-NEXT:    wfaxb %v0, %v0, %v1
55; Z14-NEXT:    vlgvg %r2, %v0, 1
56; Z14-NEXT:    br %r14
57entry:
58  %x = load fp128, ptr %0
59  %y = load fp128, ptr %1
60  %add = fadd fp128 %x, %y
61  %2 = bitcast fp128 %add to i128
62  %u.sroa.0.0.extract.trunc = trunc i128 %2 to i64
63  ret i64 %u.sroa.0.0.extract.trunc
64}
65
66define i128 @bitcast_128(ptr %0, ptr %1) {
67; Z10-LABEL: bitcast_128:
68; Z10:       # %bb.0: # %entry
69; Z10-NEXT:    ld %f0, 0(%r3)
70; Z10-NEXT:    ld %f2, 8(%r3)
71; Z10-NEXT:    ld %f1, 0(%r4)
72; Z10-NEXT:    ld %f3, 8(%r4)
73; Z10-NEXT:    axbr %f1, %f0
74; Z10-NEXT:    lgdr %r0, %f3
75; Z10-NEXT:    lgdr %r1, %f1
76; Z10-NEXT:    oill %r1, 1
77; Z10-NEXT:    oill %r0, 3
78; Z10-NEXT:    stg %r0, 8(%r2)
79; Z10-NEXT:    stg %r1, 0(%r2)
80; Z10-NEXT:    br %r14
81;
82; Z14-LABEL: bitcast_128:
83; Z14:       # %bb.0: # %entry
84; Z14-NEXT:    vl %v0, 0(%r3), 3
85; Z14-NEXT:    vl %v1, 0(%r4), 3
86; Z14-NEXT:    wfaxb %v0, %v0, %v1
87; Z14-NEXT:    larl %r1, .LCPI2_0
88; Z14-NEXT:    vl %v1, 0(%r1), 3
89; Z14-NEXT:    vo %v0, %v0, %v1
90; Z14-NEXT:    vst %v0, 0(%r2), 3
91; Z14-NEXT:    br %r14
92entry:
93  %x = load fp128, ptr %0
94  %y = load fp128, ptr %1
95  %add = fadd fp128 %x, %y
96  %i = bitcast fp128 %add to i128
97  %hibit = shl i128 1, 64
98  %i2 = or i128 %i, %hibit
99  %i3 = or i128 %i2, 3
100  ret i128 %i3
101}
102