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
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -mattr=+f -target-abi=ilp32f -code-model=small -verify-machineinstrs < %s \
; RUN: | FileCheck %s -check-prefix=RV32I-SMALL
; RUN: llc -mtriple=riscv32 -mattr=+f -target-abi=ilp32f -code-model=medium -verify-machineinstrs < %s \
; RUN: | FileCheck %s -check-prefix=RV32I-MEDIUM
; Check lowering of globals
@G = global i32 0
define i32 @lower_global(i32 %a) nounwind {
; RV32I-SMALL-LABEL: lower_global:
; RV32I-SMALL: # %bb.0:
; RV32I-SMALL-NEXT: lui a0, %hi(G)
; RV32I-SMALL-NEXT: lw a0, %lo(G)(a0)
; RV32I-SMALL-NEXT: ret
;
; RV32I-MEDIUM-LABEL: lower_global:
; RV32I-MEDIUM: # %bb.0:
; RV32I-MEDIUM-NEXT: .Lpcrel_hi0:
; RV32I-MEDIUM-NEXT: auipc a0, %pcrel_hi(G)
; RV32I-MEDIUM-NEXT: lw a0, %pcrel_lo(.Lpcrel_hi0)(a0)
; RV32I-MEDIUM-NEXT: ret
%1 = load volatile i32, ptr @G
ret i32 %1
}
; Check lowering of blockaddresses
@addr = global ptr null
define void @lower_blockaddress() nounwind {
; RV32I-SMALL-LABEL: lower_blockaddress:
; RV32I-SMALL: # %bb.0:
; RV32I-SMALL-NEXT: lui a0, %hi(addr)
; RV32I-SMALL-NEXT: li a1, 1
; RV32I-SMALL-NEXT: sw a1, %lo(addr)(a0)
; RV32I-SMALL-NEXT: ret
;
; RV32I-MEDIUM-LABEL: lower_blockaddress:
; RV32I-MEDIUM: # %bb.0:
; RV32I-MEDIUM-NEXT: .Lpcrel_hi1:
; RV32I-MEDIUM-NEXT: auipc a0, %pcrel_hi(addr)
; RV32I-MEDIUM-NEXT: li a1, 1
; RV32I-MEDIUM-NEXT: sw a1, %pcrel_lo(.Lpcrel_hi1)(a0)
; RV32I-MEDIUM-NEXT: ret
store volatile ptr blockaddress(@lower_blockaddress, %block), ptr @addr
ret void
block:
unreachable
}
; Check lowering of blockaddress that forces a displacement to be added
define signext i32 @lower_blockaddress_displ(i32 signext %w) nounwind {
; RV32I-SMALL-LABEL: lower_blockaddress_displ:
; RV32I-SMALL: # %bb.0: # %entry
; RV32I-SMALL-NEXT: addi sp, sp, -16
; RV32I-SMALL-NEXT: lui a1, %hi(.Ltmp0)
; RV32I-SMALL-NEXT: addi a1, a1, %lo(.Ltmp0)
; RV32I-SMALL-NEXT: li a2, 101
; RV32I-SMALL-NEXT: sw a1, 8(sp)
; RV32I-SMALL-NEXT: blt a0, a2, .LBB2_3
; RV32I-SMALL-NEXT: # %bb.1: # %if.then
; RV32I-SMALL-NEXT: lw a0, 8(sp)
; RV32I-SMALL-NEXT: jr a0
; RV32I-SMALL-NEXT: .Ltmp0: # Block address taken
; RV32I-SMALL-NEXT: .LBB2_2: # %return
; RV32I-SMALL-NEXT: li a0, 4
; RV32I-SMALL-NEXT: addi sp, sp, 16
; RV32I-SMALL-NEXT: ret
; RV32I-SMALL-NEXT: .LBB2_3: # %return.clone
; RV32I-SMALL-NEXT: li a0, 3
; RV32I-SMALL-NEXT: addi sp, sp, 16
; RV32I-SMALL-NEXT: ret
;
; RV32I-MEDIUM-LABEL: lower_blockaddress_displ:
; RV32I-MEDIUM: # %bb.0: # %entry
; RV32I-MEDIUM-NEXT: addi sp, sp, -16
; RV32I-MEDIUM-NEXT: .Lpcrel_hi2:
; RV32I-MEDIUM-NEXT: auipc a1, %pcrel_hi(.Ltmp0)
; RV32I-MEDIUM-NEXT: addi a1, a1, %pcrel_lo(.Lpcrel_hi2)
; RV32I-MEDIUM-NEXT: li a2, 101
; RV32I-MEDIUM-NEXT: sw a1, 8(sp)
; RV32I-MEDIUM-NEXT: blt a0, a2, .LBB2_3
; RV32I-MEDIUM-NEXT: # %bb.1: # %if.then
; RV32I-MEDIUM-NEXT: lw a0, 8(sp)
; RV32I-MEDIUM-NEXT: jr a0
; RV32I-MEDIUM-NEXT: .Ltmp0: # Block address taken
; RV32I-MEDIUM-NEXT: .LBB2_2: # %return
; RV32I-MEDIUM-NEXT: li a0, 4
; RV32I-MEDIUM-NEXT: addi sp, sp, 16
; RV32I-MEDIUM-NEXT: ret
; RV32I-MEDIUM-NEXT: .LBB2_3: # %return.clone
; RV32I-MEDIUM-NEXT: li a0, 3
; RV32I-MEDIUM-NEXT: addi sp, sp, 16
; RV32I-MEDIUM-NEXT: ret
entry:
%x = alloca ptr, align 8
store ptr blockaddress(@lower_blockaddress_displ, %test_block), ptr %x, align 8
%cmp = icmp sgt i32 %w, 100
br i1 %cmp, label %if.then, label %if.end
if.then:
%addr = load ptr, ptr %x, align 8
br label %indirectgoto
if.end:
br label %return
test_block:
br label %return
return:
%retval = phi i32 [ 3, %if.end ], [ 4, %test_block ]
ret i32 %retval
indirectgoto:
indirectbr ptr %addr, [ label %test_block ]
}
; Check lowering of constantpools
define float @lower_constantpool(float %a) nounwind {
; RV32I-SMALL-LABEL: lower_constantpool:
; RV32I-SMALL: # %bb.0:
; RV32I-SMALL-NEXT: lui a0, 260096
; RV32I-SMALL-NEXT: fmv.w.x fa5, a0
; RV32I-SMALL-NEXT: fadd.s fa0, fa0, fa5
; RV32I-SMALL-NEXT: ret
;
; RV32I-MEDIUM-LABEL: lower_constantpool:
; RV32I-MEDIUM: # %bb.0:
; RV32I-MEDIUM-NEXT: lui a0, 260096
; RV32I-MEDIUM-NEXT: fmv.w.x fa5, a0
; RV32I-MEDIUM-NEXT: fadd.s fa0, fa0, fa5
; RV32I-MEDIUM-NEXT: ret
%1 = fadd float %a, 1.0
ret float %1
}
|
