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
|
; RUN: llc -mtriple=aarch64-none-linux-gnu -relocation-model=pic -o - %s | FileCheck %s
; RUN: llc -mtriple=aarch64_be-none-linux-gnu -relocation-model=pic -o - %s | FileCheck %s
; Make sure exception-handling PIC code can be linked correctly. An alternative
; to the sequence described below would have .gcc_except_table itself writable
; and not use the indirection, but this isn't what LLVM does right now.
; There should be a read-only .gcc_except_table section...
; CHECK: .section .gcc_except_table,"a"
; ... referring indirectly to stubs for its typeinfo ...
; CHECK: // @TType Encoding = indirect pcrel sdata8
; ... one of which is "int"'s typeinfo
; CHECK: [[TYPEINFO_LBL:.Ltmp[0-9]+]]: // TypeInfo 1
; CHECK-NEXT: .xword .L_ZTIi.DW.stub-[[TYPEINFO_LBL]]
; .. and which is properly defined (in a writable section for the dynamic loader) later.
; CHECK: .section .data.rel,"aw"
; CHECK: .L_ZTIi.DW.stub:
; CHECK-NEXT: .xword _ZTIi
@_ZTIi = external constant i8*
define i32 @_Z3barv() {
entry:
invoke void @_Z3foov()
to label %return unwind label %lpad
lpad: ; preds = %entry
%0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
catch i8* bitcast (i8** @_ZTIi to i8*)
%1 = extractvalue { i8*, i32 } %0, 1
%2 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind
%matches = icmp eq i32 %1, %2
br i1 %matches, label %catch, label %eh.resume
catch: ; preds = %lpad
%3 = extractvalue { i8*, i32 } %0, 0
%4 = tail call i8* @__cxa_begin_catch(i8* %3) nounwind
%5 = bitcast i8* %4 to i32*
%exn.scalar = load i32* %5, align 4
tail call void @__cxa_end_catch() nounwind
br label %return
return: ; preds = %entry, %catch
%retval.0 = phi i32 [ %exn.scalar, %catch ], [ 42, %entry ]
ret i32 %retval.0
eh.resume: ; preds = %lpad
resume { i8*, i32 } %0
}
declare void @_Z3foov()
declare i32 @__gxx_personality_v0(...)
declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone
declare i8* @__cxa_begin_catch(i8*)
declare void @__cxa_end_catch()
|
