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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
92 lines
3.3 KiB
LLVM
92 lines
3.3 KiB
LLVM
; RUN: opt -winehprepare -S < %s | FileCheck %s
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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; Modified based on this code:
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; struct HasDtor {
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; ~HasDtor();
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; };
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; extern "C" void may_throw();
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; int main() {
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; try {
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; HasDtor o;
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; may_throw();
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; } catch (int) {
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; }
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; }
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%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
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%eh.CatchHandlerType = type { i32, i8* }
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%struct.HasDtor = type { i8 }
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$"\01??_R0H@8" = comdat any
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@"\01??_7type_info@@6B@" = external constant i8*
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@"\01??_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { i8** @"\01??_7type_info@@6B@", i8* null, [3 x i8] c".H\00" }, comdat
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@llvm.eh.handlertype.H.0 = private unnamed_addr constant %eh.CatchHandlerType { i32 0, i8* bitcast (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i8*) }, section "llvm.metadata"
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define i32 @main() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%o = alloca %struct.HasDtor, align 1
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invoke void @may_throw()
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to label %invoke.cont2 unwind label %lpad1
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invoke.cont2: ; preds = %invoke.cont
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call void @"\01??1HasDtor@@QEAA@XZ"(%struct.HasDtor* %o)
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br label %try.cont
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lpad: ; preds = %entry
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%0 = landingpad { i8*, i32 }
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catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0
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%1 = extractvalue { i8*, i32 } %0, 0
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%2 = extractvalue { i8*, i32 } %0, 1
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br label %catch.dispatch
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lpad1: ; preds = %invoke.cont
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%3 = landingpad { i8*, i32 }
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cleanup
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catch %eh.CatchHandlerType* @llvm.eh.handlertype.H.0
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%4 = extractvalue { i8*, i32 } %3, 0
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%5 = extractvalue { i8*, i32 } %3, 1
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invoke void @"\01??1HasDtor@@QEAA@XZ"(%struct.HasDtor* %o)
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to label %catch.dispatch unwind label %lpad
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catch.dispatch: ; preds = %lpad1, %lpad
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%exn.slot.0 = phi i8* [ %4, %lpad1 ], [ %1, %lpad ]
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%ehselector.slot.0 = phi i32 [ %5, %lpad1 ], [ %2, %lpad ]
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%6 = call i32 @llvm.eh.typeid.for(i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*))
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%matches = icmp eq i32 %ehselector.slot.0, %6
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br i1 %matches, label %catch, label %eh.resume
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catch: ; preds = %catch.dispatch
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call void @llvm.eh.begincatch(i8* %exn.slot.0, i8* null)
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call void @llvm.eh.endcatch()
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br label %try.cont
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try.cont: ; preds = %catch, %invoke.cont2
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ret i32 0
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eh.resume: ; preds = %catch.dispatch
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.0, 0
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%lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.0, 1
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resume { i8*, i32 } %lpad.val5
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}
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; CHECK-LABEL: define i32 @main()
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; CHECK: @llvm.eh.actions(i32 0, void (i8*, i8*)* @main.cleanup, i32 1, i8* bitcast (%eh.CatchHandlerType* @llvm.eh.handlertype.H.0 to i8*), i32 -1, i8* (i8*, i8*)* @main.catch)
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; CHECK-LABEL: define internal void @main.cleanup(i8*, i8*)
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; CHECK: call void @"\01??1HasDtor@@QEAA@XZ"(%struct.HasDtor* %{{.*}})
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; CHECK: ret void
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declare void @may_throw()
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declare i32 @__CxxFrameHandler3(...)
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declare void @"\01??1HasDtor@@QEAA@XZ"(%struct.HasDtor*)
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declare i32 @llvm.eh.typeid.for(i8*)
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declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture)
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declare void @llvm.eh.endcatch()
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