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
|
; RUN: llc -filetype=asm -mtriple=mipsel-none-linux -relocation-model=static \
; RUN: -O3 < %s | FileCheck %s
; RUN: llc -filetype=asm -mtriple=mipsel-none-nacl -relocation-model=static \
; RUN: -O3 < %s | FileCheck %s -check-prefix=CHECK-NACL
@x = global i32 0, align 4
declare void @f1(i32)
declare void @f2()
define void @test1() {
%1 = load i32, i32* @x, align 4
call void @f1(i32 %1)
ret void
; CHECK-LABEL: test1
; We first make sure that for non-NaCl targets branch-delay slot contains
; dangerous instructions.
; Check that branch-delay slot is used to load argument from x before function
; call.
; CHECK: jal
; CHECK-NEXT: lw $4, %lo(x)(${{[0-9]+}})
; Check that branch-delay slot is used for adjusting sp before return.
; CHECK: jr $ra
; CHECK-NEXT: addiu $sp, $sp, {{[0-9]+}}
; For NaCl, check that branch-delay slot doesn't contain dangerous instructions.
; CHECK-NACL: jal
; CHECK-NACL-NEXT: nop
; CHECK-NACL: jr $ra
; CHECK-NACL-NEXT: nop
}
define void @test2() {
store i32 1, i32* @x, align 4
tail call void @f2()
ret void
; CHECK-LABEL: test2
; Check that branch-delay slot is used for storing to x before function call.
; CHECK: jal
; CHECK-NEXT: sw ${{[0-9]+}}, %lo(x)(${{[0-9]+}})
; Check that branch-delay slot is used for adjusting sp before return.
; CHECK: jr $ra
; CHECK-NEXT: addiu $sp, $sp, {{[0-9]+}}
; For NaCl, check that branch-delay slot doesn't contain dangerous instructions.
; CHECK-NACL: jal
; CHECK-NACL-NEXT: nop
; CHECK-NACL: jr $ra
; CHECK-NACL-NEXT: nop
}
|
