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=i686-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefixes=X86
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefixes=X64
; FIXME: Missing fsub(x,fneg(y)) -> fadd(x,y) fold
define float @fneg_strict_fsub_to_strict_fadd(float %x, float %y) nounwind strictfp {
; X86-LABEL: fneg_strict_fsub_to_strict_fadd:
; X86: # %bb.0:
; X86-NEXT: pushl %eax
; X86-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
; X86-NEXT: movss {{.*#+}} xmm1 = mem[0],zero,zero,zero
; X86-NEXT: xorps {{\.?LCPI[0-9]+_[0-9]+}}, %xmm1
; X86-NEXT: subss %xmm1, %xmm0
; X86-NEXT: movss %xmm0, (%esp)
; X86-NEXT: flds (%esp)
; X86-NEXT: wait
; X86-NEXT: popl %eax
; X86-NEXT: retl
;
; X64-LABEL: fneg_strict_fsub_to_strict_fadd:
; X64: # %bb.0:
; X64-NEXT: xorps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; X64-NEXT: subss %xmm1, %xmm0
; X64-NEXT: retq
%neg = fneg float %y
%sub = call float @llvm.experimental.constrained.fsub.f32(float %x, float %neg, metadata!"round.dynamic", metadata!"fpexcept.strict")
ret float %sub
}
; FIXME: Missing fsub(x,fneg(y)) -> fadd(x,y) fold
define double @fneg_strict_fsub_to_strict_fadd_d(double %x, double %y) nounwind strictfp {
; X86-LABEL: fneg_strict_fsub_to_strict_fadd_d:
; X86: # %bb.0:
; X86-NEXT: pushl %ebp
; X86-NEXT: movl %esp, %ebp
; X86-NEXT: andl $-8, %esp
; X86-NEXT: subl $8, %esp
; X86-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; X86-NEXT: movsd {{.*#+}} xmm1 = mem[0],zero
; X86-NEXT: xorpd {{\.?LCPI[0-9]+_[0-9]+}}, %xmm1
; X86-NEXT: subsd %xmm1, %xmm0
; X86-NEXT: movsd %xmm0, (%esp)
; X86-NEXT: fldl (%esp)
; X86-NEXT: wait
; X86-NEXT: movl %ebp, %esp
; X86-NEXT: popl %ebp
; X86-NEXT: retl
;
; X64-LABEL: fneg_strict_fsub_to_strict_fadd_d:
; X64: # %bb.0:
; X64-NEXT: xorpd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm1
; X64-NEXT: subsd %xmm1, %xmm0
; X64-NEXT: retq
%neg = fneg double %y
%sub = call double @llvm.experimental.constrained.fsub.f64(double %x, double %neg, metadata!"round.dynamic", metadata!"fpexcept.strict")
ret double %sub
}
; FIXME: Missing fneg(fsub(x,y)) -> fsub(y,x) fold
define float @strict_fsub_fneg_to_strict_fsub(float %x, float %y) nounwind strictfp {
; X86-LABEL: strict_fsub_fneg_to_strict_fsub:
; X86: # %bb.0:
; X86-NEXT: pushl %eax
; X86-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
; X86-NEXT: subss {{[0-9]+}}(%esp), %xmm0
; X86-NEXT: xorps {{\.?LCPI[0-9]+_[0-9]+}}, %xmm0
; X86-NEXT: movss %xmm0, (%esp)
; X86-NEXT: flds (%esp)
; X86-NEXT: wait
; X86-NEXT: popl %eax
; X86-NEXT: retl
;
; X64-LABEL: strict_fsub_fneg_to_strict_fsub:
; X64: # %bb.0:
; X64-NEXT: subss %xmm1, %xmm0
; X64-NEXT: xorps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; X64-NEXT: retq
%sub = call float @llvm.experimental.constrained.fsub.f32(float %x, float %y, metadata!"round.dynamic", metadata!"fpexcept.strict")
%neg = fneg float %sub
ret float %neg
}
; FIXME: Missing fneg(fsub(x,y)) -> fsub(y,x) fold
define double @strict_fsub_fneg_to_strict_fsub_d(double %x, double %y) nounwind strictfp {
; X86-LABEL: strict_fsub_fneg_to_strict_fsub_d:
; X86: # %bb.0:
; X86-NEXT: pushl %ebp
; X86-NEXT: movl %esp, %ebp
; X86-NEXT: andl $-8, %esp
; X86-NEXT: subl $8, %esp
; X86-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; X86-NEXT: subsd 16(%ebp), %xmm0
; X86-NEXT: xorpd {{\.?LCPI[0-9]+_[0-9]+}}, %xmm0
; X86-NEXT: movlpd %xmm0, (%esp)
; X86-NEXT: fldl (%esp)
; X86-NEXT: wait
; X86-NEXT: movl %ebp, %esp
; X86-NEXT: popl %ebp
; X86-NEXT: retl
;
; X64-LABEL: strict_fsub_fneg_to_strict_fsub_d:
; X64: # %bb.0:
; X64-NEXT: subsd %xmm1, %xmm0
; X64-NEXT: xorpd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
; X64-NEXT: retq
%sub = call double @llvm.experimental.constrained.fsub.f64(double %x, double %y, metadata!"round.dynamic", metadata!"fpexcept.strict")
%neg = fneg double %sub
ret double %neg
}
declare float @llvm.experimental.constrained.fsub.f32(float, float, metadata, metadata)
declare double @llvm.experimental.constrained.fsub.f64(double, double, metadata, metadata)
|
