1 ; RUN: llc -mtriple i386-windows-gnu -exception-model sjlj -filetype asm -o - %s | FileCheck %s 2 3 declare void @_Z20function_that_throwsv() 4 declare i32 @__gxx_personality_sj0(...) 5 declare i8* @__cxa_begin_catch(i8*) 6 declare void @__cxa_end_catch() 7 8 define void @_Z8functionv() personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) { 9 entry: 10 invoke void @_Z20function_that_throwsv() 11 to label %try.cont unwind label %lpad 12 13 lpad: 14 %0 = landingpad { i8*, i32 } 15 catch i8* null 16 %1 = extractvalue { i8*, i32 } %0, 0 17 %2 = tail call i8* @__cxa_begin_catch(i8* %1) 18 tail call void @__cxa_end_catch() 19 br label %try.cont 20 21 try.cont: 22 ret void 23 } 24 25 ; struct _Unwind_FunctionContext { 26 ; +00 struct _Unwind_FunctionContext *prev; -64(%ebp) 27 ; +04 uintptr_t __callsite; -60(%ebp) 28 ; +08 uintptr_t __buffer[4]; -44(%ebp) 29 ; +28 __personality_routine __personality; -40(%ebp) 30 ; +32 uintptr_t __lsda; -36(%ebp) 31 ; +36 void *__jbuf[]; -32(%ebp) 32 ; }; 33 34 35 ; CHECK-LABEL: __Z8functionv: 36 ; struct _Unwind_FunctionContext UFC; 37 ; 38 ; UFC.__personality = __gxx_personality_sj0 39 ; CHECK: movl $___gxx_personality_sj0, -40(%ebp) 40 ; UFC.__lsda = $LSDA 41 ; CHECK: movl $[[LSDA:GCC_except_table[0-9]+]], -36(%ebp) 42 ; UFC.__jbuf[0] = $EBP 43 ; CHECK: movl %ebp, -32(%ebp) 44 ; UFC.__jbuf[2] = $ESP 45 ; CHECK: movl %esp, -24(%ebp) 46 ; UFC.__jbuf[1] = $EIP 47 ; CHECK: movl $[[RESUME:LBB[0-9]+_[0-9]+]], -28(%ebp) 48 ; UFC.__callsite = 1 49 ; CHECK: movl $1, -60(%ebp) 50 ; _Unwind_SjLj_Register(&UFC); 51 ; CHECK: leal -64(%ebp), %eax 52 ; CHECK: pushl %eax 53 ; CHECK: calll __Unwind_SjLj_Register 54 ; CHECK: addl $4, %esp 55 ; function_that_throws(); 56 ; CHECK: calll __Z20function_that_throwsv 57 ; _Unwind_SjLj_Unregister(&UFC); 58 ; CHECK: leal -64(%ebp), %eax 59 ; CHECK: calll __Unwind_SjLj_Unregister 60 ; 61 ; CHECK: [[RESUME]]: 62 ; CHECK: leal -64(%ebp), %esi 63 ; assert(UFC.__callsite <= 1); 64 ; CHECK: movl -60(%ebp), %eax 65 ; CHECK: cmpl $1, %eax 66 ; CHECK: jbe [[CONT:LBB[0-9]+_[0-9]+]] 67 ; CHECK: ud2 68 ; CHECK: [[CONT]]: 69 ; *Handlers[--UFC.__callsite] 70 ; CHECK: subl $1, %eax 71 ; CHECK: jmpl *LJTI 72 73
