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https://github.com/c64scene-ar/llvm-6502.git
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bfa311df8c
It turns out that _except_handler3 and _except_handler4 really use the same stack allocation layout, at least today. They just make different choices about encoding the LSDA. This is in preparation for lowering the llvm.eh.exceptioninfo(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238627 91177308-0d34-0410-b5e6-96231b3b80d8
113 lines
3.3 KiB
LLVM
113 lines
3.3 KiB
LLVM
; RUN: llc -mtriple=i686-pc-windows-msvc < %s | FileCheck %s
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declare void @may_throw_or_crash()
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declare i32 @_except_handler3(...)
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declare i32 @_except_handler4(...)
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declare i32 @__CxxFrameHandler3(...)
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declare void @llvm.eh.begincatch(i8*, i8*)
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declare void @llvm.eh.endcatch()
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define void @use_except_handler3() {
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invoke void @may_throw_or_crash()
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to label %cont unwind label %catchall
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cont:
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ret void
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catchall:
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landingpad { i8*, i32 } personality i32 (...)* @_except_handler3
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catch i8* null
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br label %cont
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}
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; CHECK-LABEL: _use_except_handler3:
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; CHECK: pushl %ebp
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; CHECK: movl %esp, %ebp
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; CHECK: subl ${{[0-9]+}}, %esp
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; CHECK: movl $-1, -4(%ebp)
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; CHECK: movl $L__ehtable$use_except_handler3, -8(%ebp)
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; CHECK: leal -16(%ebp), %[[node:[^ ,]*]]
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; CHECK: movl $__except_handler3, -12(%ebp)
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; CHECK: movl %fs:0, %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], -16(%ebp)
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; CHECK: movl %[[node]], %fs:0
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; CHECK: calll _may_throw_or_crash
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; CHECK: movl -16(%ebp), %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], %fs:0
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; CHECK: retl
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define void @use_except_handler4() {
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invoke void @may_throw_or_crash()
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to label %cont unwind label %catchall
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cont:
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ret void
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catchall:
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landingpad { i8*, i32 } personality i32 (...)* @_except_handler4
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catch i8* null
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br label %cont
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}
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; CHECK-LABEL: _use_except_handler4:
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; CHECK: pushl %ebp
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; CHECK: movl %esp, %ebp
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; CHECK: subl ${{[0-9]+}}, %esp
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; CHECK: movl %esp, -24(%ebp)
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; CHECK: movl $-2, -4(%ebp)
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; CHECK: movl $L__ehtable$use_except_handler4, %[[lsda:[^ ,]*]]
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; CHECK: xorl ___security_cookie, %[[lsda]]
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; CHECK: movl %[[lsda]], -8(%ebp)
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; CHECK: leal -16(%ebp), %[[node:[^ ,]*]]
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; CHECK: movl $__except_handler4, -12(%ebp)
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; CHECK: movl %fs:0, %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], -16(%ebp)
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; CHECK: movl %[[node]], %fs:0
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; CHECK: calll _may_throw_or_crash
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; CHECK: movl -16(%ebp), %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], %fs:0
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; CHECK: retl
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define void @use_CxxFrameHandler3() {
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invoke void @may_throw_or_crash()
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to label %cont unwind label %catchall
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cont:
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ret void
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catchall:
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%ehvals = landingpad { i8*, i32 } personality i32 (...)* @__CxxFrameHandler3
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catch i8* null
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%ehptr = extractvalue { i8*, i32 } %ehvals, 0
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call void @llvm.eh.begincatch(i8* %ehptr, i8* null)
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call void @llvm.eh.endcatch()
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br label %cont
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}
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; CHECK-LABEL: _use_CxxFrameHandler3:
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; CHECK: pushl %ebp
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; CHECK: movl %esp, %ebp
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; CHECK: subl ${{[0-9]+}}, %esp
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; CHECK: movl %esp, -16(%ebp)
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; CHECK: movl $-1, -4(%ebp)
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; CHECK: leal -12(%ebp), %[[node:[^ ,]*]]
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; CHECK: movl $___ehhandler$use_CxxFrameHandler3, -8(%ebp)
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; CHECK: movl %fs:0, %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], -12(%ebp)
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; CHECK: movl %[[node]], %fs:0
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; CHECK: movl $0, -4(%ebp)
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; CHECK: calll _may_throw_or_crash
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; CHECK: movl -12(%ebp), %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], %fs:0
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; CHECK: retl
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; CHECK: .section .xdata,"dr"
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; CHECK-LABEL: L__ehtable$use_CxxFrameHandler3:
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; CHECK-NEXT: .long 429065506
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; CHECK-NEXT: .long 2
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; CHECK-NEXT: .long ($stateUnwindMap$use_CxxFrameHandler3)
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; CHECK-NEXT: .long 1
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; CHECK-NEXT: .long ($tryMap$use_CxxFrameHandler3)
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 1
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; CHECK-LABEL: ___ehhandler$use_CxxFrameHandler3:
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; CHECK: movl $L__ehtable$use_CxxFrameHandler3, %eax
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; CHECK: jmp ___CxxFrameHandler3 # TAILCALL
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