b3458fdec5
Windows x64 Unwind V2 adds epilog information to unwind data: specifically, the length of the epilog and the offset of each epilog. The first step to do this is to add markers to the beginning and end of each epilog when generating Windows x64 code. I've modelled this after how LLVM was marking ARM and AArch64 epilogs in Windows (and unified the code between the three).
281 lines
6.9 KiB
LLVM
281 lines
6.9 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple=i686-pc-windows-msvc < %s | FileCheck --check-prefix=X86 %s
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; RUN: llc -verify-machineinstrs -mtriple=x86_64-pc-windows-msvc < %s | FileCheck --check-prefix=X64 %s
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%rtti.TypeDescriptor2 = type { ptr, ptr, [3 x i8] }
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%eh.CatchableType = type { i32, ptr, i32, i32, i32, i32, ptr }
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%eh.CatchableTypeArray.1 = type { i32, [1 x ptr] }
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%eh.ThrowInfo = type { i32, ptr, ptr, ptr }
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$"\01??_R0H@8" = comdat any
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@"\01??_7type_info@@6B@" = external constant ptr
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@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"\01??_7type_info@@6B@", ptr null, [3 x i8] c".H\00" }, comdat
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declare i32 @getint()
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declare void @useints(...)
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declare void @f(i32 %p)
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declare i32 @__CxxFrameHandler3(...)
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define i32 @try_catch_catch() personality ptr @__CxxFrameHandler3 {
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entry:
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%a = call i32 @getint()
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%b = call i32 @getint()
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%c = call i32 @getint()
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%d = call i32 @getint()
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call void (...) @useints(i32 %a, i32 %b, i32 %c, i32 %d)
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invoke void @f(i32 1)
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to label %try.cont unwind label %catch.dispatch
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try.cont:
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ret i32 0
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catch.dispatch:
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%cs = catchswitch within none [label %handler1] unwind to caller
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handler1:
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%h1 = catchpad within %cs [ptr @"\01??_R0H@8", i32 0, ptr null]
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call void @f(i32 2) [ "funclet"(token %h1) ]
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catchret from %h1 to label %try.cont
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}
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; X86-LABEL: _try_catch_catch:
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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 ${{[0-9]+}}, %esp
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; X86: calll _getint
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; X86: calll _getint
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; X86: calll _getint
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; X86: calll _getint
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; X86: calll _useints
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; X86: movl $0, -{{[0-9]+}}(%ebp)
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; X86: pushl $1
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; X86: calll _f
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; X86: [[contbb:LBB0_[0-9]+]]: # %try.cont
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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: [[restorebb:LBB0_[0-9]+]]:
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; X86: addl $12, %ebp
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; X86: jmp [[contbb]]
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; X86: "?catch$[[catch1bb:[0-9]+]]@?0?try_catch_catch@4HA":
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; X86: LBB0_[[catch1bb]]: # %handler1{{$}}
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; X86: pushl %ebp
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; X86-NOT: pushl
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; X86: subl $16, %esp
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; X86: addl $12, %ebp
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; X86: movl $1, -{{[0-9]+}}(%ebp)
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; X86: pushl $2
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; X86: calll _f
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; X86: movl $[[restorebb]], %eax
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; X86-NEXT: addl $16, %esp
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; X86-NEXT: popl %ebp
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; X86-NEXT: retl
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; X86: L__ehtable$try_catch_catch:
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; X86: $handlerMap$0$try_catch_catch:
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; X86: .long 0
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; X86: .long "??_R0H@8"
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; X86: .long 0
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; X86: .long "?catch$[[catch1bb]]@?0?try_catch_catch@4HA"
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; X64-LABEL: try_catch_catch:
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; X64: pushq %rbp
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; X64: .seh_pushreg %rbp
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; X64: pushq %rsi
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; X64: .seh_pushreg %rsi
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; X64: pushq %rdi
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; X64: .seh_pushreg %rdi
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; X64: pushq %rbx
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; X64: .seh_pushreg %rbx
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; X64: subq $40, %rsp
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; X64: .seh_stackalloc 40
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; X64: leaq 32(%rsp), %rbp
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; X64: .seh_setframe %rbp, 32
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; X64: .seh_endprologue
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; X64: movq $-2, (%rbp)
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; X64: callq getint
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; X64: callq getint
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; X64: callq getint
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; X64: callq getint
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; X64: callq useints
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; X64: movl $1, %ecx
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; X64: callq f
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; X64: [[contbb:\.LBB0_[0-9]+]]: # Block address taken
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; X64-NEXT: # %try.cont
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; X64: .seh_startepilogue
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; X64: addq $40, %rsp
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; X64: popq %rbp
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; X64: .seh_endepilogue
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; X64: retq
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; X64: "?catch$[[catch1bb:[0-9]+]]@?0?try_catch_catch@4HA":
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; X64: LBB0_[[catch1bb]]: # %handler1{{$}}
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; X64: movq %rdx, 16(%rsp)
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; X64: pushq %rbp
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; X64: .seh_pushreg %rbp
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; X64: pushq %rsi
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; X64: .seh_pushreg %rsi
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; X64: pushq %rdi
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; X64: .seh_pushreg %rdi
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; X64: pushq %rbx
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; X64: .seh_pushreg %rbx
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; X64: subq $40, %rsp
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; X64: .seh_stackalloc 40
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; X64: leaq 32(%rdx), %rbp
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; X64: .seh_endprologue
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; X64: movl $2, %ecx
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; X64: callq f
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; X64: leaq [[contbb]](%rip), %rax
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; X64: .seh_startepilogue
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; X64: addq $40, %rsp
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; X64: popq %rbx
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; X64: popq %rdi
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; X64: popq %rsi
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; X64: popq %rbp
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; X64: .seh_endepilogue
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; X64: retq
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; X64: $handlerMap$0$try_catch_catch:
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; X64: .long 0
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; X64: .long "??_R0H@8"@IMGREL
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; X64: .long 0
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; X64: .long "?catch$[[catch1bb]]@?0?try_catch_catch@4HA"@IMGREL
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; X64: .long 88
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define i32 @try_one_csr() personality ptr @__CxxFrameHandler3 {
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entry:
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%a = call i32 @getint()
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%b = call i32 @getint()
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call void (...) @useints(i32 %a)
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invoke void @f(i32 1)
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to label %try.cont unwind label %catch.dispatch
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catch.dispatch:
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%cs = catchswitch within none [label %handler1] unwind to caller
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handler1:
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%0 = catchpad within %cs [ptr @"\01??_R0H@8", i32 0, ptr null]
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catchret from %0 to label %try.cont
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try.cont:
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ret i32 0
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}
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; X64-LABEL: try_one_csr:
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; X64: pushq %rbp
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; X64: .seh_pushreg %rbp
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; X64: pushq %rsi
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; X64: .seh_pushreg %rsi
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; X64-NOT: pushq
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; X64: subq $40, %rsp
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; X64: .seh_stackalloc 40
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; X64: leaq 32(%rsp), %rbp
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; X64: .seh_setframe %rbp, 32
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; X64: .seh_endprologue
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; X64: callq getint
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; X64: callq getint
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; X64: callq useints
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; X64: movl $1, %ecx
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; X64: callq f
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; X64: [[contbb:\.LBB1_[0-9]+]]: # Block address taken
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; X64-NEXT: # %try.cont
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; X64: .seh_startepilogue
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; X64: addq $40, %rsp
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; X64-NOT: popq
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; X64: popq %rsi
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; X64: popq %rbp
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; X64: .seh_endepilogue
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; X64: retq
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; X64: "?catch$[[catch1bb:[0-9]+]]@?0?try_one_csr@4HA":
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; X64: LBB1_[[catch1bb]]: # %handler1{{$}}
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; X64: movq %rdx, 16(%rsp)
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; X64: pushq %rbp
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; X64: .seh_pushreg %rbp
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; X64: pushq %rsi
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; X64: .seh_pushreg %rsi
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; X64: subq $40, %rsp
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; X64: .seh_stackalloc 40
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; X64: leaq 32(%rdx), %rbp
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; X64: .seh_endprologue
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; X64: leaq [[contbb]](%rip), %rax
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; X64: .seh_startepilogue
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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: .seh_endepilogue
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; X64: retq
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; X64: $handlerMap$0$try_one_csr:
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; X64: .long 0
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; X64: .long "??_R0H@8"@IMGREL
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; X64: .long 0
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; X64: .long "?catch$[[catch1bb]]@?0?try_one_csr@4HA"@IMGREL
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; X64: .long 72
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define i32 @try_no_csr() personality ptr @__CxxFrameHandler3 {
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entry:
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invoke void @f(i32 1)
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to label %try.cont unwind label %catch.dispatch
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catch.dispatch:
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%cs = catchswitch within none [label %handler1] unwind to caller
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handler1:
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%cp1 = catchpad within %cs [ptr @"\01??_R0H@8", i32 0, ptr null]
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catchret from %cp1 to label %try.cont
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try.cont:
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ret i32 0
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}
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; X64-LABEL: try_no_csr:
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; X64: pushq %rbp
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; X64: .seh_pushreg %rbp
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; X64-NOT: pushq
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; X64: subq $48, %rsp
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; X64: .seh_stackalloc 48
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; X64: leaq 48(%rsp), %rbp
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; X64: .seh_setframe %rbp, 48
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; X64: .seh_endprologue
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; X64: movl $1, %ecx
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; X64: callq f
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; X64: [[contbb:\.LBB2_[0-9]+]]: # Block address taken
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; X64-NEXT: # %try.cont
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; X64: .seh_startepilogue
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; X64: addq $48, %rsp
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; X64-NOT: popq
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; X64: popq %rbp
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; X64: .seh_endepilogue
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; X64: retq
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; X64: "?catch$[[catch1bb:[0-9]+]]@?0?try_no_csr@4HA":
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; X64: LBB2_[[catch1bb]]: # %handler1{{$}}
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; X64: movq %rdx, 16(%rsp)
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; X64: pushq %rbp
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; X64: .seh_pushreg %rbp
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; X64: subq $32, %rsp
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; X64: .seh_stackalloc 32
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; X64: leaq 48(%rdx), %rbp
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; X64: .seh_endprologue
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; X64: leaq [[contbb]](%rip), %rax
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; X64: .seh_startepilogue
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; X64: addq $32, %rsp
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; X64: popq %rbp
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; X64: .seh_endepilogue
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; X64: retq
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; X64: $handlerMap$0$try_no_csr:
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; X64: .long 0
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; X64: .long "??_R0H@8"@IMGREL
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; X64: .long 0
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; X64: .long "?catch$[[catch1bb]]@?0?try_no_csr@4HA"@IMGREL
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; X64: .long 56
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