1 ; RUN: llc %s -o - | FileCheck %s
2 target triple = "armv7-apple-ios"
4 declare i32 @llvm.eh.sjlj.setjmp(i8*)
5 declare void @llvm.eh.sjlj.longjmp(i8*)
6 @g = external global i32
8 declare void @may_throw()
9 declare i32 @__gxx_personality_sj0(...)
10 declare i8* @__cxa_begin_catch(i8*)
11 declare void @__cxa_end_catch()
12 declare i32 @llvm.eh.typeid.for(i8*)
13 declare i8* @llvm.frameaddress(i32)
14 declare i8* @llvm.stacksave()
15 @_ZTIPKc = external constant i8*
20 ; CHECK: add [[PCREG:r[0-9]+]], pc, #8
21 ; CHECK-NEXT: str [[PCREG]], {{\[}}[[BUFREG:r[0-9]+]], #4]
22 ; CHECK-NEXT: mov r0, #0
23 ; CHECK-NEXT: add pc, pc, #0
24 ; CHECK-NEXT: mov r0, #1
27 ; CHECK: ldr sp, [{{\s*}}[[BUFREG:r[0-9]+]], #8]
28 ; CHECK-NEXT: ldr [[DESTREG:r[0-9]+]], {{\[}}[[BUFREG]], #4]
29 ; CHECK-NEXT: ldr r7, {{\[}}[[BUFREG]]{{\]}}
30 ; CHECK-NEXT: bx [[DESTREG]]
31 define void @foobar() {
33 %buf = alloca [5 x i8*], align 4
34 %arraydecay = getelementptr inbounds [5 x i8*], [5 x i8*]* %buf, i32 0, i32 0
35 %bufptr = bitcast i8** %arraydecay to i8*
36 ; Note: This is simplified, in reality you have to store the framepointer +
37 ; stackpointer in the buffer as well for this to be legal!
38 %setjmpres = call i32 @llvm.eh.sjlj.setjmp(i8* %bufptr)
39 %tobool = icmp ne i32 %setjmpres, 0
40 br i1 %tobool, label %if.then, label %if.else
43 store volatile i32 1, i32* @g, align 4
47 store volatile i32 0, i32* @g, align 4
48 call void @llvm.eh.sjlj.longjmp(i8* %bufptr)
55 ; CHECK-LABEL: combine_sjlj_eh_and_setjmp_longjmp
56 ; Check that we can mix sjlj exception handling with __builtin_setjmp
57 ; and __builtin_longjmp.
60 ; CHECK: add [[PCREG:r[0-9]+]], pc, #8
61 ; CHECK-NEXT: str [[PCREG]], {{\[}}[[BUFREG:r[0-9]+]], #4]
62 ; CHECK-NEXT: mov r0, #0
63 ; CHECK-NEXT: add pc, pc, #0
64 ; CHECK-NEXT: mov r0, #1
67 ; CHECK: ldr sp, [{{\s*}}[[BUFREG:r[0-9]+]], #8]
68 ; CHECK-NEXT: ldr [[DESTREG:r[0-9]+]], {{\[}}[[BUFREG]], #4]
69 ; CHECK-NEXT: ldr r7, {{\[}}[[BUFREG]]{{\]}}
70 ; CHECK-NEXT: bx [[DESTREG]]
71 define void @combine_sjlj_eh_and_setjmp_longjmp() personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
73 %buf = alloca [5 x i8*], align 4
74 invoke void @may_throw() to label %try.cont unwind label %lpad
77 %0 = landingpad { i8*, i32 } catch i8* bitcast (i8** @_ZTIPKc to i8*)
78 %1 = extractvalue { i8*, i32 } %0, 1
79 %2 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIPKc to i8*)) #3
80 %matches = icmp eq i32 %1, %2
81 br i1 %matches, label %catch, label %eh.resume
84 %3 = extractvalue { i8*, i32 } %0, 0
85 %4 = tail call i8* @__cxa_begin_catch(i8* %3) #3
86 store volatile i32 0, i32* @g, align 4
87 %5 = bitcast [5 x i8*]* %buf to i8*
88 %arraydecay = getelementptr inbounds [5 x i8*], [5 x i8*]* %buf, i64 0, i64 0
89 %6 = tail call i8* @llvm.frameaddress(i32 0)
90 store i8* %6, i8** %arraydecay, align 16
91 %7 = tail call i8* @llvm.stacksave()
92 %8 = getelementptr [5 x i8*], [5 x i8*]* %buf, i64 0, i64 2
93 store i8* %7, i8** %8, align 16
94 %9 = call i32 @llvm.eh.sjlj.setjmp(i8* %5)
95 %tobool = icmp eq i32 %9, 0
96 br i1 %tobool, label %if.else, label %if.then
99 store volatile i32 2, i32* @g, align 4
100 call void @__cxa_end_catch() #3
104 store volatile i32 1, i32* @g, align 4
105 call void @llvm.eh.sjlj.longjmp(i8* %5)
109 resume { i8*, i32 } %0