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1584024037
Now the offset of UnwindHelp in our EH tables and the offset that we store to in the prologue agree. llvm-svn: 253059
105 lines
2.9 KiB
LLVM
105 lines
2.9 KiB
LLVM
; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s --check-prefix=X64
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; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s --check-prefix=X86
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declare void @llvm.va_start(i8*)
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declare void @llvm.va_end(i8*)
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declare i32 @__CxxFrameHandler3(...)
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declare void @g()
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define i32 @f(i32 %a, ...) personality i32 (...)* @__CxxFrameHandler3 {
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entry:
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%ap = alloca i8*
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invoke void @g()
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to label %return unwind label %catch.dispatch
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catch.dispatch: ; preds = %entry
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%0 = catchpad [i8* null, i32 64, i8* null]
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to label %catch unwind label %catchendblock
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catch: ; preds = %catch.dispatch
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%ap1 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap1)
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%argp.cur = load i8*, i8** %ap
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%1 = bitcast i8* %argp.cur to i32*
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%arg2 = load i32, i32* %1
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call void @llvm.va_end(i8* %ap1)
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catchret %0 to label %return
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catchendblock: ; preds = %catch.dispatch
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catchendpad unwind to caller
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return: ; preds = %entry, %catch
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%retval.0 = phi i32 [ %arg2, %catch ], [ -1, %entry ]
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ret i32 %retval.0
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}
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; X64-LABEL: .seh_proc f
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; X64: pushq %rbp
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; X64: pushq %rsi
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; X64: subq $56, %rsp
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; X64: leaq 48(%rsp), %rbp
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; X64: movq $-2, (%rbp)
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; X64: callq g
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; X64: movl %esi, %eax
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; X64: addq $56, %rsp
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; X64: popq %rsi
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; X64: popq %rbp
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; X64: movl -4(%rbp), %esi
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; X64: jmp
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; X64-LABEL: "?catch$1@?0?f@4HA":
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; X64: .seh_proc "?catch$1@?0?f@4HA"
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; X64: movq %rdx, 16(%rsp)
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; X64: pushq %rbp
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; X64: pushq %rsi
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; X64: subq $40, %rsp
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; X64: leaq 48(%rdx), %rbp
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; arg2 is at RBP+40:
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; start at arg2
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; + 8 for arg1
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; + 8 for retaddr
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; + 8 for RBP
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; + 8 for RSI
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; + 56 for stackalloc
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; - 48 for setframe
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; = 40
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; X64: movl 40(%rbp), %eax
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; X64: movl %eax, -4(%rbp)
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; X64: leaq .LBB0_2(%rip), %rax
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; X64: addq $40, %rsp
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; X64: popq %rsi
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; X64: popq %rbp
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; X64: retq # CATCHRET
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; X86-LABEL: _f: # @f
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; X86: pushl %ebp
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; X86: movl %esp, %ebp
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; X86: pushl %ebx
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; X86: pushl %edi
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; X86: pushl %esi
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; X86: subl $28, %esp
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; X86: movl $-1, -40(%ebp)
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; X86: calll _g
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; X86: movl -40(%ebp), %eax
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; X86: addl $28, %esp
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; X86: popl %esi
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; X86: popl %edi
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; X86: popl %ebx
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; X86: popl %ebp
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; X86: retl
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; X86-LABEL: "?catch$1@?0?f@4HA":
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; X86: pushl %ebp
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; X86: addl $12, %ebp
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; arg2 is at EBP offset 12:
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; + 4 for arg1
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; + 4 for retaddr
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; + 4 for EBP
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; Done due to mov %esp, %ebp
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; X86: movl 12(%ebp), %eax
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; X86: movl %eax, -32(%ebp)
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; X86: movl $LBB0_2, %eax
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; X86: popl %ebp
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; X86: retl # CATCHRET
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