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
|
; RUN: llc -verify-machineinstrs -O3 -mtriple=x86_64-apple-macosx -enable-implicit-null-checks < %s | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-apple-macosx -enable-implicit-null-checks \
; RUN: | llvm-mc -triple x86_64-apple-macosx -filetype=obj -o - \
; RUN: | llvm-objdump --triple=x86_64-apple-macosx --fault-map-section - \
; RUN: | FileCheck %s -check-prefix OBJDUMP
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -enable-implicit-null-checks \
; RUN: | llvm-mc -triple x86_64-unknown-linux-gnu -filetype=obj -o - \
; RUN: | llvm-objdump --triple=x86_64-unknown-linux-gnu --fault-map-section - \
; RUN: | FileCheck %s -check-prefix OBJDUMP
;; The tests in this file exist just to check basic validity of the FaultMap
;; section. Please don't add to this file unless you're testing the FaultMap
;; serialization code itself.
define i32 @imp_null_check_load(ptr %x) {
; CHECK-LABEL: _imp_null_check_load:
; CHECK: [[BB0_imp_null_check_load:L[^:]+]]:
; CHECK: movl (%rdi), %eax
; CHECK: retq
; CHECK: [[BB1_imp_null_check_load:LBB0_[0-9]+]]:
; CHECK: movl $42, %eax
; CHECK: retq
entry:
%c = icmp eq ptr %x, null
br i1 %c, label %is_null, label %not_null, !make.implicit !0
is_null:
ret i32 42
not_null:
%t = load i32, ptr %x
ret i32 %t
}
define void @imp_null_check_store(ptr %x) {
; CHECK-LABEL: _imp_null_check_store:
; CHECK: [[BB0_imp_null_check_store:L[^:]+]]:
; CHECK: movl $1, (%rdi)
; CHECK: retq
; CHECK: [[BB1_imp_null_check_store:LBB1_[0-9]+]]:
; CHECK: retq
entry:
%c = icmp eq ptr %x, null
br i1 %c, label %is_null, label %not_null, !make.implicit !0
is_null:
ret void
not_null:
store i32 1, ptr %x
ret void
}
!0 = !{}
; CHECK-LABEL: __LLVM_FaultMaps:
; Version:
; CHECK-NEXT: .byte 1
; Reserved x2
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .short 0
; # functions:
; CHECK-NEXT: .long 2
; FunctionAddr:
; CHECK-NEXT: .quad _imp_null_check_load
; NumFaultingPCs
; CHECK-NEXT: .long 1
; Reserved:
; CHECK-NEXT: .long 0
; Fault[0].Type:
; CHECK-NEXT: .long 1
; Fault[0].FaultOffset:
; CHECK-NEXT: .long [[BB0_imp_null_check_load]]-_imp_null_check_load
; Fault[0].HandlerOffset:
; CHECK-NEXT: .long [[BB1_imp_null_check_load]]-_imp_null_check_load
; FunctionAddr:
; CHECK-NEXT: .quad _imp_null_check_store
; NumFaultingPCs
; CHECK-NEXT: .long 1
; Reserved:
; CHECK-NEXT: .long 0
; Fault[0].Type:
; CHECK-NEXT: .long 3
; Fault[0].FaultOffset:
; CHECK-NEXT: .long [[BB0_imp_null_check_store]]-_imp_null_check_store
; Fault[0].HandlerOffset:
; CHECK-NEXT: .long [[BB1_imp_null_check_store]]-_imp_null_check_store
; OBJDUMP: FaultMap table:
; OBJDUMP-NEXT: Version: 0x1
; OBJDUMP-NEXT: NumFunctions: 2
; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
; OBJDUMP-NEXT: Fault kind: FaultingLoad, faulting PC offset: 0, handling PC offset: 3
; OBJDUMP-NEXT: FunctionAddress: 0x000000, NumFaultingPCs: 1
; OBJDUMP-NEXT: Fault kind: FaultingStore, faulting PC offset: 0, handling PC offset: 7
|
