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(ptr %n, ptr %d) personality ptr @_except_handler3 {
28 %r = alloca i32, align 4
30 invoke void @try_body(ptr %r, ptr %n, ptr %d)
31 to label %__try.cont unwind label %lpad0
34 %cs0 = catchswitch within none [label %handler0] unwind label %lpad1
37 %p0 = catchpad within %cs0 [ptr @safe_div_filt0]
38 call void @puts(ptr @str1) [ "funclet"(token %p0) ]
39 store i32 -1, ptr %r, align 4
40 catchret from %p0 to label %__try.cont
43 %cs1 = catchswitch within none [label %handler1] unwind to caller
46 %p1 = catchpad within %cs1 [ptr @safe_div_filt1]
47 call void @puts(ptr @str2) [ "funclet"(token %p1) ]
48 store i32 -2, ptr %r, align 4
49 catchret from %p1 to label %__try.cont
52 %safe_ret = load i32, ptr %r, align 4
58 ; CHECK: {{^}}_safe_div:
59 ; CHECK: movl $42, [[rloc:.*\(%ebp\)]]
60 ; CHECK: leal [[rloc]],
61 ; CHECK: calll _try_body
62 ; CHECK: [[cont_bb:LBB0_[0-9]+]]:
63 ; CHECK: movl [[rloc]], %eax
68 ; CHECK: [[handler1:LBB0_[0-9]+]]: # %handler1
70 ; CHECK: movl {{.*}}(%ebp), %esp
72 ; CHECK: jmp [[cont_bb]]
74 ; CHECK: [[handler0:LBB0_[0-9]+]]: # %handler0
76 ; CHECK: movl {{.*}}(%ebp), %esp
78 ; CHECK: jmp [[cont_bb]]
80 ; CHECK: .section .xdata,"dr"
81 ; CHECK: L__ehtable$safe_div:
82 ; CHECK-NEXT: .long -1
83 ; CHECK-NEXT: .long _safe_div_filt1
84 ; CHECK-NEXT: .long [[handler1]]
86 ; CHECK-NEXT: .long _safe_div_filt0
87 ; CHECK-NEXT: .long [[handler0]]
89 define void @try_body(ptr %r, ptr %n, ptr %d) {
91 %0 = load i32, ptr %n, align 4
92 %1 = load i32, ptr %d, align 4
93 %div = sdiv i32 %0, %1
94 store i32 %div, ptr %r, align 4
98 ; The prototype of these filter functions is:
99 ; int filter(EXCEPTION_POINTERS *eh_ptrs, ptr rbp);
101 ; The definition of EXCEPTION_POINTERS is:
102 ; typedef struct _EXCEPTION_POINTERS {
103 ; EXCEPTION_RECORD *ExceptionRecord;
104 ; CONTEXT *ContextRecord;
105 ; } EXCEPTION_POINTERS;
107 ; The definition of EXCEPTION_RECORD is:
108 ; typedef struct _EXCEPTION_RECORD {
109 ; DWORD ExceptionCode;
111 ; } EXCEPTION_RECORD;
113 define i32 @safe_div_filt0() {
114 %ebp = call ptr @llvm.frameaddress(i32 1)
115 %eh_ptrs.addr.i8 = getelementptr inbounds i8, ptr %ebp, i32 -20
116 %eh_ptrs = load ptr, ptr %eh_ptrs.addr.i8
117 %eh_rec = load ptr, ptr %eh_ptrs
118 %eh_code = load i32, ptr %eh_rec
119 ; EXCEPTION_ACCESS_VIOLATION = 0xC0000005
120 %cmp = icmp eq i32 %eh_code, 3221225477
121 %filt.res = zext i1 %cmp to i32
124 define i32 @safe_div_filt1() {
125 %ebp = call ptr @llvm.frameaddress(i32 1)
126 %eh_ptrs.addr.i8 = getelementptr inbounds i8, ptr %ebp, i32 -20
127 %eh_ptrs = load ptr, ptr %eh_ptrs.addr.i8
128 %eh_rec = load ptr, ptr %eh_ptrs
129 %eh_code = load i32, ptr %eh_rec
130 ; EXCEPTION_INT_DIVIDE_BY_ZERO = 0xC0000094
131 %cmp = icmp eq i32 %eh_code, 3221225620
132 %filt.res = zext i1 %cmp to i32
136 @str_result = internal constant [21 x i8] c"safe_div result: %d\0A\00"
139 %d.addr = alloca i32, align 4
140 %n.addr = alloca i32, align 4
142 store i32 10, ptr %n.addr, align 4
143 store i32 2, ptr %d.addr, align 4
144 %r1 = call i32 @safe_div(ptr %n.addr, ptr %d.addr)
145 call void (ptr, ...) @printf(ptr @str_result, i32 %r1)
147 store i32 10, ptr %n.addr, align 4
148 store i32 0, ptr %d.addr, align 4
149 %r2 = call i32 @safe_div(ptr %n.addr, ptr %d.addr)
150 call void (ptr, ...) @printf(ptr @str_result, i32 %r2)
152 %r3 = call i32 @safe_div(ptr %n.addr, ptr null)
153 call void (ptr, ...) @printf(ptr @str_result, i32 %r3)
157 declare i32 @_except_handler3(...)
158 declare i32 @llvm.eh.typeid.for(ptr) readnone nounwind
159 declare void @puts(ptr)
160 declare void @printf(ptr, ...)
161 declare void @abort()
162 declare ptr @llvm.frameaddress(i32)