1; RUN: llc -mtriple i386-windows-gnu -exception-model sjlj -filetype asm -o - %s | FileCheck %s 2 3declare void @_Z20function_that_throwsv() 4declare i32 @__gxx_personality_sj0(...) 5declare i8* @__cxa_begin_catch(i8*) 6declare void @__cxa_end_catch() 7 8define void @_Z8functionv() personality i8* bitcast (i32 (...)* @__gxx_personality_sj0 to i8*) { 9entry: 10 invoke void @_Z20function_that_throwsv() 11 to label %try.cont unwind label %lpad 12 13lpad: 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 21try.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