; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s --check-prefix=X64 ; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s --check-prefix=X86 declare void @llvm.va_start(i8*) declare void @llvm.va_end(i8*) declare i32 @__CxxFrameHandler3(...) declare void @g() define i32 @f(i32 %a, ...) personality i32 (...)* @__CxxFrameHandler3 { entry: %ap = alloca i8* invoke void @g() to label %return unwind label %catch.dispatch catch.dispatch: ; preds = %entry %0 = catchpad [i8* null, i32 64, i8* null] to label %catch unwind label %catchendblock catch: ; preds = %catch.dispatch %ap1 = bitcast i8** %ap to i8* call void @llvm.va_start(i8* %ap1) %argp.cur = load i8*, i8** %ap %1 = bitcast i8* %argp.cur to i32* %arg2 = load i32, i32* %1 call void @llvm.va_end(i8* %ap1) catchret %0 to label %return catchendblock: ; preds = %catch.dispatch catchendpad unwind to caller return: ; preds = %entry, %catch %retval.0 = phi i32 [ %arg2, %catch ], [ -1, %entry ] ret i32 %retval.0 } ; X64-LABEL: .seh_proc f ; X64: pushq %rbp ; X64: pushq %rsi ; X64: subq $56, %rsp ; X64: leaq 48(%rsp), %rbp ; X64: callq g ; X64: movl %esi, %eax ; X64: addq $56, %rsp ; X64: popq %rsi ; X64: popq %rbp ; X64: movl 4(%rbp), %esi ; X64: jmp ; X64-LABEL: "?catch$1@?0?f@4HA": ; X64: .seh_proc "?catch$1@?0?f@4HA" ; X64: movq %rdx, 16(%rsp) ; X64: pushq %rbp ; X64: pushq %rsi ; X64: subq $40, %rsp ; X64: leaq 48(%rdx), %rbp ; arg2 is at RBP+40: ; start at arg2 ; + 8 for arg1 ; + 8 for retaddr ; + 8 for RBP ; + 8 for RSI ; + 56 for stackalloc ; - 48 for setframe ; = 40 ; X64: movl 40(%rbp), %eax ; X64: movl %eax, 4(%rbp) ; X64: leaq .LBB0_2(%rip), %rax ; X64: addq $40, %rsp ; X64: popq %rsi ; X64: popq %rbp ; X64: retq # CATCHRET ; X86-LABEL: _f: # @f ; X86: pushl %ebp ; X86: movl %esp, %ebp ; X86: pushl %ebx ; X86: pushl %edi ; X86: pushl %esi ; X86: subl $28, %esp ; X86: movl $-1, -40(%ebp) ; X86: calll _g ; X86: movl -40(%ebp), %eax ; X86: addl $28, %esp ; X86: popl %esi ; X86: popl %edi ; X86: popl %ebx ; X86: popl %ebp ; X86: retl ; X86-LABEL: "?catch$1@?0?f@4HA": ; X86: pushl %ebp ; X86: addl $12, %ebp ; arg2 is at EBP offset 12: ; + 4 for arg1 ; + 4 for retaddr ; + 4 for EBP ; Done due to mov %esp, %ebp ; X86: movl 12(%ebp), %eax ; X86: movl %eax, -32(%ebp) ; X86: movl $LBB0_2, %eax ; X86: popl %ebp ; X86: retl # CATCHRET