1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefixes=ANY,STRICT
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -enable-unsafe-fp-math | FileCheck %s --check-prefixes=ANY,UNSAFE
define float @fadd_zero(float %x) {
; STRICT-LABEL: fadd_zero:
; STRICT: # %bb.0:
; STRICT-NEXT: xorps %xmm1, %xmm1
; STRICT-NEXT: addss %xmm1, %xmm0
; STRICT-NEXT: retq
;
; UNSAFE-LABEL: fadd_zero:
; UNSAFE: # %bb.0:
; UNSAFE-NEXT: retq
%r = fadd float %x, 0.0
ret float %r
}
define float @fadd_negzero(float %x) {
; STRICT-LABEL: fadd_negzero:
; STRICT: # %bb.0:
; STRICT-NEXT: addss {{.*}}(%rip), %xmm0
; STRICT-NEXT: retq
;
; UNSAFE-LABEL: fadd_negzero:
; UNSAFE: # %bb.0:
; UNSAFE-NEXT: retq
%r = fadd float %x, -0.0
ret float %r
}
define float @fadd_zero_nsz(float %x) {
; ANY-LABEL: fadd_zero_nsz:
; ANY: # %bb.0:
; ANY-NEXT: retq
%r = fadd nsz float %x, 0.0
ret float %r
}
define float @fadd_negzero_nsz(float %x) {
; ANY-LABEL: fadd_negzero_nsz:
; ANY: # %bb.0:
; ANY-NEXT: retq
%r = fadd nsz float %x, -0.0
ret float %r
}
define float @fsub_zero(float %x) {
; STRICT-LABEL: fsub_zero:
; STRICT: # %bb.0:
; STRICT-NEXT: addss {{.*}}(%rip), %xmm0
; STRICT-NEXT: retq
;
; UNSAFE-LABEL: fsub_zero:
; UNSAFE: # %bb.0:
; UNSAFE-NEXT: retq
%r = fsub float %x, 0.0
ret float %r
}
define float @fsub_negzero(float %x) {
; STRICT-LABEL: fsub_negzero:
; STRICT: # %bb.0:
; STRICT-NEXT: xorps %xmm1, %xmm1
; STRICT-NEXT: addss %xmm1, %xmm0
; STRICT-NEXT: retq
;
; UNSAFE-LABEL: fsub_negzero:
; UNSAFE: # %bb.0:
; UNSAFE-NEXT: retq
%r = fsub float %x, -0.0
ret float %r
}
define float @fsub_zero_nsz(float %x) {
; ANY-LABEL: fsub_zero_nsz:
; ANY: # %bb.0:
; ANY-NEXT: retq
%r = fsub nsz float %x, 0.0
ret float %r
}
define float @fsub_negzero_nsz(float %x) {
; ANY-LABEL: fsub_negzero_nsz:
; ANY: # %bb.0:
; ANY-NEXT: retq
%r = fsub nsz float %x, -0.0
ret float %r
}
; TODO: handle x*0 for fast flags the same as unsafe
define float @fmul_zero(float %x) {
; STRICT-LABEL: fmul_zero:
; STRICT: # %bb.0:
; STRICT-NEXT: xorps %xmm1, %xmm1
; STRICT-NEXT: mulss %xmm1, %xmm0
; STRICT-NEXT: retq
;
; UNSAFE-LABEL: fmul_zero:
; UNSAFE: # %bb.0:
; UNSAFE-NEXT: xorps %xmm0, %xmm0
; UNSAFE-NEXT: retq
%r = fmul nnan nsz float %x, 0.0
ret float %r
}
define float @fmul_one(float %x) {
; ANY-LABEL: fmul_one:
; ANY: # %bb.0:
; ANY-NEXT: retq
%r = fmul float %x, 1.0
ret float %r
}
|
