1 ; RUN: llc -mtriple i686-pc-windows-msvc < %s | FileCheck %s
3 ; This test case is also intended to be run manually as a complete functional
4 ; test. It should link, print something, and exit zero rather than crashing.
5 ; It is the hypothetical lowering of a C source program that looks like:
7 ; int safe_div(int *n, int *d) {
12 ; } __except(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION) {
13 ; puts("EXCEPTION_ACCESS_VIOLATION");
16 ; } __except(GetExceptionCode() == EXCEPTION_INT_DIVIDE_BY_ZERO) {
17 ; puts("EXCEPTION_INT_DIVIDE_BY_ZERO");
23 @str1 = internal constant [27 x i8] c"EXCEPTION_ACCESS_VIOLATION\00"
24 @str2 = internal constant [29 x i8] c"EXCEPTION_INT_DIVIDE_BY_ZERO\00"
26 define i32 @safe_div(i32* %n, i32* %d) personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
28 %r = alloca i32, align 4
30 invoke void @try_body(i32* %r, i32* %n, i32* %d)
31 to label %__try.cont unwind label %lpad
34 %vals = landingpad { i8*, i32 }
35 catch i8* bitcast (i32 ()* @safe_div_filt0 to i8*)
36 catch i8* bitcast (i32 ()* @safe_div_filt1 to i8*)
37 %ehptr = extractvalue { i8*, i32 } %vals, 0
38 %sel = extractvalue { i8*, i32 } %vals, 1
39 %filt0_val = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @safe_div_filt0 to i8*))
40 %is_filt0 = icmp eq i32 %sel, %filt0_val
41 br i1 %is_filt0, label %handler0, label %eh.dispatch1
44 %filt1_val = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @safe_div_filt1 to i8*))
45 %is_filt1 = icmp eq i32 %sel, %filt1_val
46 br i1 %is_filt1, label %handler1, label %eh.resume
49 call void @puts(i8* getelementptr ([27 x i8], [27 x i8]* @str1, i32 0, i32 0))
50 store i32 -1, i32* %r, align 4
54 call void @puts(i8* getelementptr ([29 x i8], [29 x i8]* @str2, i32 0, i32 0))
55 store i32 -2, i32* %r, align 4
59 resume { i8*, i32 } %vals
62 %safe_ret = load i32, i32* %r, align 4
68 ; CHECK: {{^}}_safe_div:
69 ; CHECK: movl $42, [[rloc:.*\(%ebp\)]]
70 ; CHECK: leal [[rloc]],
71 ; CHECK: calll _try_body
72 ; CHECK: [[cont_bb:LBB0_[0-9]+]]:
73 ; CHECK: movl [[rloc]], %eax
78 ; CHECK: [[handler0:Ltmp[0-9]+]]: # Block address taken
81 ; CHECK: movl {{.*}}(%ebp), %esp
83 ; CHECK: jmp [[cont_bb]]
85 ; CHECK: [[handler1:Ltmp[0-9]+]]: # Block address taken
88 ; CHECK: movl {{.*}}(%ebp), %esp
90 ; CHECK: jmp [[cont_bb]]
92 ; CHECK: .section .xdata,"dr"
93 ; CHECK: L__ehtable$safe_div:
94 ; CHECK-NEXT: .long -1
95 ; CHECK-NEXT: .long _safe_div_filt1
96 ; CHECK-NEXT: .long [[handler1]]
98 ; CHECK-NEXT: .long _safe_div_filt0
99 ; CHECK-NEXT: .long [[handler0]]
101 define void @try_body(i32* %r, i32* %n, i32* %d) {
103 %0 = load i32, i32* %n, align 4
104 %1 = load i32, i32* %d, align 4
105 %div = sdiv i32 %0, %1
106 store i32 %div, i32* %r, align 4
110 ; The prototype of these filter functions is:
111 ; int filter(EXCEPTION_POINTERS *eh_ptrs, void *rbp);
113 ; The definition of EXCEPTION_POINTERS is:
114 ; typedef struct _EXCEPTION_POINTERS {
115 ; EXCEPTION_RECORD *ExceptionRecord;
116 ; CONTEXT *ContextRecord;
117 ; } EXCEPTION_POINTERS;
119 ; The definition of EXCEPTION_RECORD is:
120 ; typedef struct _EXCEPTION_RECORD {
121 ; DWORD ExceptionCode;
123 ; } EXCEPTION_RECORD;
125 ; FIXME: Use llvm.eh.exceptioninfo for this.
126 declare i32 @safe_div_filt0()
127 declare i32 @safe_div_filt1()
128 ; define i32 @safe_div_filt0() {
129 ; %eh_ptrs_c = bitcast i8* %eh_ptrs to i32**
130 ; %eh_rec = load i32*, i32** %eh_ptrs_c
131 ; %eh_code = load i32, i32* %eh_rec
132 ; ; EXCEPTION_ACCESS_VIOLATION = 0xC0000005
133 ; %cmp = icmp eq i32 %eh_code, 3221225477
134 ; %filt.res = zext i1 %cmp to i32
137 ; define i32 @safe_div_filt1() {
138 ; %eh_ptrs_c = bitcast i8* %eh_ptrs to i32**
139 ; %eh_rec = load i32*, i32** %eh_ptrs_c
140 ; %eh_code = load i32, i32* %eh_rec
141 ; ; EXCEPTION_INT_DIVIDE_BY_ZERO = 0xC0000094
142 ; %cmp = icmp eq i32 %eh_code, 3221225620
143 ; %filt.res = zext i1 %cmp to i32
147 @str_result = internal constant [21 x i8] c"safe_div result: %d\0A\00"
150 %d.addr = alloca i32, align 4
151 %n.addr = alloca i32, align 4
153 store i32 10, i32* %n.addr, align 4
154 store i32 2, i32* %d.addr, align 4
155 %r1 = call i32 @safe_div(i32* %n.addr, i32* %d.addr)
156 call void (i8*, ...) @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r1)
158 store i32 10, i32* %n.addr, align 4
159 store i32 0, i32* %d.addr, align 4
160 %r2 = call i32 @safe_div(i32* %n.addr, i32* %d.addr)
161 call void (i8*, ...) @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r2)
163 %r3 = call i32 @safe_div(i32* %n.addr, i32* null)
164 call void (i8*, ...) @printf(i8* getelementptr ([21 x i8], [21 x i8]* @str_result, i32 0, i32 0), i32 %r3)
168 declare i32 @_except_handler3(...)
169 declare i32 @llvm.eh.typeid.for(i8*) readnone nounwind
170 declare void @puts(i8*)
171 declare void @printf(i8*, ...)
172 declare void @abort()