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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
; RUN: | FileCheck -check-prefix=RV32I-FPELIM %s
; RUN: llc -mtriple=riscv32 -verify-machineinstrs -frame-pointer=all < %s \
; RUN: | FileCheck -check-prefix=RV32I-WITHFP %s
; TODO: the quality of the generated code is poor
define void @test() {
; RV32I-FPELIM-LABEL: test:
; RV32I-FPELIM: # %bb.0:
; RV32I-FPELIM-NEXT: lui a0, 74565
; RV32I-FPELIM-NEXT: addi a0, a0, 1664
; RV32I-FPELIM-NEXT: sub sp, sp, a0
; RV32I-FPELIM-NEXT: .cfi_def_cfa_offset 305419904
; RV32I-FPELIM-NEXT: lui a0, 74565
; RV32I-FPELIM-NEXT: addi a0, a0, 1664
; RV32I-FPELIM-NEXT: add sp, sp, a0
; RV32I-FPELIM-NEXT: .cfi_def_cfa_offset 0
; RV32I-FPELIM-NEXT: ret
;
; RV32I-WITHFP-LABEL: test:
; RV32I-WITHFP: # %bb.0:
; RV32I-WITHFP-NEXT: addi sp, sp, -2032
; RV32I-WITHFP-NEXT: .cfi_def_cfa_offset 2032
; RV32I-WITHFP-NEXT: sw ra, 2028(sp) # 4-byte Folded Spill
; RV32I-WITHFP-NEXT: sw s0, 2024(sp) # 4-byte Folded Spill
; RV32I-WITHFP-NEXT: .cfi_offset ra, -4
; RV32I-WITHFP-NEXT: .cfi_offset s0, -8
; RV32I-WITHFP-NEXT: addi s0, sp, 2032
; RV32I-WITHFP-NEXT: .cfi_def_cfa s0, 0
; RV32I-WITHFP-NEXT: lui a0, 74565
; RV32I-WITHFP-NEXT: addi a0, a0, -352
; RV32I-WITHFP-NEXT: sub sp, sp, a0
; RV32I-WITHFP-NEXT: lui a0, 74565
; RV32I-WITHFP-NEXT: addi a0, a0, -352
; RV32I-WITHFP-NEXT: add sp, sp, a0
; RV32I-WITHFP-NEXT: .cfi_def_cfa sp, 2032
; RV32I-WITHFP-NEXT: lw ra, 2028(sp) # 4-byte Folded Reload
; RV32I-WITHFP-NEXT: lw s0, 2024(sp) # 4-byte Folded Reload
; RV32I-WITHFP-NEXT: .cfi_restore ra
; RV32I-WITHFP-NEXT: .cfi_restore s0
; RV32I-WITHFP-NEXT: addi sp, sp, 2032
; RV32I-WITHFP-NEXT: .cfi_def_cfa_offset 0
; RV32I-WITHFP-NEXT: ret
%tmp = alloca [ 305419896 x i8 ] , align 4
ret void
}
; This test case artificially produces register pressure which should force
; use of the emergency spill slot.
define void @test_emergency_spill_slot(i32 %a) {
; RV32I-FPELIM-LABEL: test_emergency_spill_slot:
; RV32I-FPELIM: # %bb.0:
; RV32I-FPELIM-NEXT: addi sp, sp, -2032
; RV32I-FPELIM-NEXT: .cfi_def_cfa_offset 2032
; RV32I-FPELIM-NEXT: sw s0, 2028(sp) # 4-byte Folded Spill
; RV32I-FPELIM-NEXT: sw s1, 2024(sp) # 4-byte Folded Spill
; RV32I-FPELIM-NEXT: .cfi_offset s0, -4
; RV32I-FPELIM-NEXT: .cfi_offset s1, -8
; RV32I-FPELIM-NEXT: lui a1, 97
; RV32I-FPELIM-NEXT: addi a1, a1, 672
; RV32I-FPELIM-NEXT: sub sp, sp, a1
; RV32I-FPELIM-NEXT: .cfi_def_cfa_offset 400016
; RV32I-FPELIM-NEXT: lui a1, 78
; RV32I-FPELIM-NEXT: addi a2, sp, 8
; RV32I-FPELIM-NEXT: add a1, a2, a1
; RV32I-FPELIM-NEXT: #APP
; RV32I-FPELIM-NEXT: nop
; RV32I-FPELIM-NEXT: #NO_APP
; RV32I-FPELIM-NEXT: sw a0, 512(a1)
; RV32I-FPELIM-NEXT: #APP
; RV32I-FPELIM-NEXT: nop
; RV32I-FPELIM-NEXT: #NO_APP
; RV32I-FPELIM-NEXT: lui a0, 97
; RV32I-FPELIM-NEXT: addi a0, a0, 672
; RV32I-FPELIM-NEXT: add sp, sp, a0
; RV32I-FPELIM-NEXT: .cfi_def_cfa_offset 2032
; RV32I-FPELIM-NEXT: lw s0, 2028(sp) # 4-byte Folded Reload
; RV32I-FPELIM-NEXT: lw s1, 2024(sp) # 4-byte Folded Reload
; RV32I-FPELIM-NEXT: .cfi_restore s0
; RV32I-FPELIM-NEXT: .cfi_restore s1
; RV32I-FPELIM-NEXT: addi sp, sp, 2032
; RV32I-FPELIM-NEXT: .cfi_def_cfa_offset 0
; RV32I-FPELIM-NEXT: ret
;
; RV32I-WITHFP-LABEL: test_emergency_spill_slot:
; RV32I-WITHFP: # %bb.0:
; RV32I-WITHFP-NEXT: addi sp, sp, -2032
; RV32I-WITHFP-NEXT: .cfi_def_cfa_offset 2032
; RV32I-WITHFP-NEXT: sw ra, 2028(sp) # 4-byte Folded Spill
; RV32I-WITHFP-NEXT: sw s0, 2024(sp) # 4-byte Folded Spill
; RV32I-WITHFP-NEXT: sw s1, 2020(sp) # 4-byte Folded Spill
; RV32I-WITHFP-NEXT: sw s2, 2016(sp) # 4-byte Folded Spill
; RV32I-WITHFP-NEXT: .cfi_offset ra, -4
; RV32I-WITHFP-NEXT: .cfi_offset s0, -8
; RV32I-WITHFP-NEXT: .cfi_offset s1, -12
; RV32I-WITHFP-NEXT: .cfi_offset s2, -16
; RV32I-WITHFP-NEXT: addi s0, sp, 2032
; RV32I-WITHFP-NEXT: .cfi_def_cfa s0, 0
; RV32I-WITHFP-NEXT: lui a1, 97
; RV32I-WITHFP-NEXT: addi a1, a1, 688
; RV32I-WITHFP-NEXT: sub sp, sp, a1
; RV32I-WITHFP-NEXT: lui a1, 78
; RV32I-WITHFP-NEXT: lui a2, 98
; RV32I-WITHFP-NEXT: addi a2, a2, -1388
; RV32I-WITHFP-NEXT: sub a2, s0, a2
; RV32I-WITHFP-NEXT: add a1, a2, a1
; RV32I-WITHFP-NEXT: #APP
; RV32I-WITHFP-NEXT: nop
; RV32I-WITHFP-NEXT: #NO_APP
; RV32I-WITHFP-NEXT: sw a0, 512(a1)
; RV32I-WITHFP-NEXT: #APP
; RV32I-WITHFP-NEXT: nop
; RV32I-WITHFP-NEXT: #NO_APP
; RV32I-WITHFP-NEXT: lui a0, 97
; RV32I-WITHFP-NEXT: addi a0, a0, 688
; RV32I-WITHFP-NEXT: add sp, sp, a0
; RV32I-WITHFP-NEXT: .cfi_def_cfa sp, 2032
; RV32I-WITHFP-NEXT: lw ra, 2028(sp) # 4-byte Folded Reload
; RV32I-WITHFP-NEXT: lw s0, 2024(sp) # 4-byte Folded Reload
; RV32I-WITHFP-NEXT: lw s1, 2020(sp) # 4-byte Folded Reload
; RV32I-WITHFP-NEXT: lw s2, 2016(sp) # 4-byte Folded Reload
; RV32I-WITHFP-NEXT: .cfi_restore ra
; RV32I-WITHFP-NEXT: .cfi_restore s0
; RV32I-WITHFP-NEXT: .cfi_restore s1
; RV32I-WITHFP-NEXT: .cfi_restore s2
; RV32I-WITHFP-NEXT: addi sp, sp, 2032
; RV32I-WITHFP-NEXT: .cfi_def_cfa_offset 0
; RV32I-WITHFP-NEXT: ret
%data = alloca [ 100000 x i32 ] , align 4
%ptr = getelementptr inbounds [100000 x i32], ptr %data, i32 0, i32 80000
%1 = tail call { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } asm sideeffect "nop", "=r,=r,=r,=r,=r,=r,=r,=r,=r,=r,=r,=r,=r,=r,=r"()
%asmresult0 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 0
%asmresult1 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 1
%asmresult2 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 2
%asmresult3 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 3
%asmresult4 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 4
%asmresult5 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 5
%asmresult6 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 6
%asmresult7 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 7
%asmresult8 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 8
%asmresult9 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 9
%asmresult10 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 10
%asmresult11 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 11
%asmresult12 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 12
%asmresult13 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 13
%asmresult14 = extractvalue { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } %1, 14
store volatile i32 %a, ptr %ptr
tail call void asm sideeffect "nop", "r,r,r,r,r,r,r,r,r,r,r,r,r,r,r"(i32 %asmresult0, i32 %asmresult1, i32 %asmresult2, i32 %asmresult3, i32 %asmresult4, i32 %asmresult5, i32 %asmresult6, i32 %asmresult7, i32 %asmresult8, i32 %asmresult9, i32 %asmresult10, i32 %asmresult11, i32 %asmresult12, i32 %asmresult13, i32 %asmresult14)
ret void
}
|
