source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/ARM/setjmp_longjmp.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

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Line 
1; RUN: llc %s -o - | FileCheck %s
2target triple = "armv7-apple-ios"
3
4declare i32 @llvm.eh.sjlj.setjmp(i8*)
5declare void @llvm.eh.sjlj.longjmp(i8*)
6@g = external global i32
7
8declare void @may_throw()
9declare i32 @__gxx_personality_sj0(...)
10declare i8* @__cxa_begin_catch(i8*)
11declare void @__cxa_end_catch()
12declare i32 @llvm.eh.typeid.for(i8*)
13declare i8* @llvm.frameaddress(i32)
14declare i8* @llvm.stacksave()
15@_ZTIPKc = external constant i8*
16
17; CHECK-LABEL: foobar
18;
19; setjmp sequence:
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
25;
26; longjmp sequence:
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]]
31define void @foobar() {
32entry:
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
41
42if.then:
43  store volatile i32 1, i32* @g, align 4
44  br label %if.end
45
46if.else:
47  store volatile i32 0, i32* @g, align 4
48  call void @llvm.eh.sjlj.longjmp(i8* %bufptr)
49  unreachable
50
51if.end:
52  ret void
53}
54
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.
58;
59; setjmp sequence:
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
65;
66; longjmp sequence:
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]]
71define void @combine_sjlj_eh_and_setjmp_longjmp() personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) {
72entry:
73  %buf = alloca [5 x i8*], align 4
74  invoke void @may_throw() to label %try.cont unwind label %lpad
75
76lpad:
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
82
83catch:
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
97
98if.then:
99  store volatile i32 2, i32* @g, align 4
100  call void @__cxa_end_catch() #3
101  br label %try.cont
102
103if.else:
104  store volatile i32 1, i32* @g, align 4
105  call void @llvm.eh.sjlj.longjmp(i8* %5)
106  unreachable
107
108eh.resume:
109  resume { i8*, i32 } %0
110
111try.cont:
112  ret void
113}
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