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https://github.com/c64scene-ar/llvm-6502.git
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cc714e2142
The personality routine currently lives in the LandingPadInst. This isn't desirable because: - All LandingPadInsts in the same function must have the same personality routine. This means that each LandingPadInst beyond the first has an operand which produces no additional information. - There is ongoing work to introduce EH IR constructs other than LandingPadInst. Moving the personality routine off of any one particular Instruction and onto the parent function seems a lot better than have N different places a personality function can sneak onto an exceptional function. Differential Revision: http://reviews.llvm.org/D10429 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239940 91177308-0d34-0410-b5e6-96231b3b80d8
150 lines
4.5 KiB
LLVM
150 lines
4.5 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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declare i32 @llvm.eh.typeid.for(i8*)
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define internal i32 @catchall_filt() {
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ret i32 1
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}
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define void @use_except_handler3() personality i32 (...)* @_except_handler3 {
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entry:
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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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%0 = landingpad { i8*, i32 }
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catch i8* bitcast (i32 ()* @catchall_filt to i8*)
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%1 = extractvalue { i8*, i32 } %0, 1
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%2 = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @catchall_filt to i8*)) #4
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%matches = icmp eq i32 %1, %2
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br i1 %matches, label %cont, label %eh.resume
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eh.resume:
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resume { i8*, i32 } %0
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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 $__except_handler3, -12(%ebp)
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; CHECK: movl %fs:0, %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], -16(%ebp)
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; CHECK: movl %[[node]], %fs:0
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; CHECK: calll _may_throw_or_crash
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; CHECK: movl -16(%ebp), %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], %fs:0
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; CHECK: retl
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; CHECK: .section .xdata,"dr"
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; CHECK-LABEL: L__ehtable$use_except_handler3:
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; CHECK-NEXT: .long -1
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; CHECK-NEXT: .long _catchall_filt
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; CHECK-NEXT: .long Ltmp{{[0-9]+}}
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define void @use_except_handler4() personality i32 (...)* @_except_handler4 {
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entry:
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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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%0 = landingpad { i8*, i32 }
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catch i8* bitcast (i32 ()* @catchall_filt to i8*)
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%1 = extractvalue { i8*, i32 } %0, 1
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%2 = call i32 @llvm.eh.typeid.for(i8* bitcast (i32 ()* @catchall_filt to i8*)) #4
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%matches = icmp eq i32 %1, %2
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br i1 %matches, label %cont, label %eh.resume
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eh.resume:
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resume { i8*, i32 } %0
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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 $__except_handler4, -12(%ebp)
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; CHECK: movl %fs:0, %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], -16(%ebp)
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; CHECK: movl %[[node]], %fs:0
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; CHECK: calll _may_throw_or_crash
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; CHECK: movl -16(%ebp), %[[next:[^ ,]*]]
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; CHECK: movl %[[next]], %fs:0
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; CHECK: retl
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; CHECK: .section .xdata,"dr"
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; CHECK-LABEL: L__ehtable$use_except_handler4:
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; CHECK-NEXT: .long -2
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long 9999
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .long -2
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; CHECK-NEXT: .long _catchall_filt
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; CHECK-NEXT: .long Ltmp{{[0-9]+}}
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define void @use_CxxFrameHandler3() personality i32 (...)* @__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 }
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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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; CHECK: .safeseh __except_handler3
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; CHECK: .safeseh __except_handler4
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; CHECK: .safeseh ___ehhandler$use_CxxFrameHandler3
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