File: pic-models.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (85 lines) | stat: -rw-r--r-- 2,742 bytes parent folder | download | duplicates (11)
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
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -relocation-model=static < %s \
; RUN:     | FileCheck -check-prefix=RV32-STATIC %s
; RUN: llc -mtriple=riscv32 -relocation-model=pic < %s \
; RUN:     | FileCheck -check-prefix=RV32-PIC %s
; RUN: llc -mtriple=riscv64 -relocation-model=static < %s \
; RUN:     | FileCheck -check-prefix=RV64-STATIC %s
; RUN: llc -mtriple=riscv64 -relocation-model=pic < %s \
; RUN:     | FileCheck -check-prefix=RV64-PIC %s

; Check basic lowering of PIC addressing.
; TODO: Check other relocation models?

@external_var = external global i32
@internal_var = internal global i32 42


; external address

define i32* @f1() nounwind {
; RV32-STATIC-LABEL: f1:
; RV32-STATIC:       # %bb.0: # %entry
; RV32-STATIC-NEXT:    lui a0, %hi(external_var)
; RV32-STATIC-NEXT:    addi a0, a0, %lo(external_var)
; RV32-STATIC-NEXT:    ret
;
; RV32-PIC-LABEL: f1:
; RV32-PIC:       # %bb.0: # %entry
; RV32-PIC-NEXT:  .LBB0_1: # %entry
; RV32-PIC-NEXT:    # Label of block must be emitted
; RV32-PIC-NEXT:    auipc a0, %got_pcrel_hi(external_var)
; RV32-PIC-NEXT:    lw a0, %pcrel_lo(.LBB0_1)(a0)
; RV32-PIC-NEXT:    ret
;
; RV64-STATIC-LABEL: f1:
; RV64-STATIC:       # %bb.0: # %entry
; RV64-STATIC-NEXT:    lui a0, %hi(external_var)
; RV64-STATIC-NEXT:    addi a0, a0, %lo(external_var)
; RV64-STATIC-NEXT:    ret
;
; RV64-PIC-LABEL: f1:
; RV64-PIC:       # %bb.0: # %entry
; RV64-PIC-NEXT:  .LBB0_1: # %entry
; RV64-PIC-NEXT:    # Label of block must be emitted
; RV64-PIC-NEXT:    auipc a0, %got_pcrel_hi(external_var)
; RV64-PIC-NEXT:    ld a0, %pcrel_lo(.LBB0_1)(a0)
; RV64-PIC-NEXT:    ret
entry:
  ret i32* @external_var
}


; internal address

define i32* @f2() nounwind {
; RV32-STATIC-LABEL: f2:
; RV32-STATIC:       # %bb.0: # %entry
; RV32-STATIC-NEXT:    lui a0, %hi(internal_var)
; RV32-STATIC-NEXT:    addi a0, a0, %lo(internal_var)
; RV32-STATIC-NEXT:    ret
;
; RV32-PIC-LABEL: f2:
; RV32-PIC:       # %bb.0: # %entry
; RV32-PIC-NEXT:  .LBB1_1: # %entry
; RV32-PIC-NEXT:    # Label of block must be emitted
; RV32-PIC-NEXT:    auipc a0, %pcrel_hi(internal_var)
; RV32-PIC-NEXT:    addi a0, a0, %pcrel_lo(.LBB1_1)
; RV32-PIC-NEXT:    ret
;
; RV64-STATIC-LABEL: f2:
; RV64-STATIC:       # %bb.0: # %entry
; RV64-STATIC-NEXT:    lui a0, %hi(internal_var)
; RV64-STATIC-NEXT:    addi a0, a0, %lo(internal_var)
; RV64-STATIC-NEXT:    ret
;
; RV64-PIC-LABEL: f2:
; RV64-PIC:       # %bb.0: # %entry
; RV64-PIC-NEXT:  .LBB1_1: # %entry
; RV64-PIC-NEXT:    # Label of block must be emitted
; RV64-PIC-NEXT:    auipc a0, %pcrel_hi(internal_var)
; RV64-PIC-NEXT:    addi a0, a0, %pcrel_lo(.LBB1_1)
; RV64-PIC-NEXT:    ret
entry:
  ret i32* @internal_var
}