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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
144 lines
5.3 KiB
LLVM
144 lines
5.3 KiB
LLVM
; RUN: opt -mtriple=x86_64-pc-windows-msvc -winehprepare -S -o - < %s | FileCheck %s
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; This test is based on the following code:
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;
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; class Obj {
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; public:
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; ~Obj();
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; };
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;
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; void test(void)
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; {
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; try {
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; Obj o;
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; throw 1;
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; } catch (...) {
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; throw;
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; }
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; }
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; ModuleID = 'cppeh-catch-and-throw.cpp'
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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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%rtti.TypeDescriptor2 = type { i8**, i8*, [3 x i8] }
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%eh.CatchableType = type { i32, i32, i32, i32, i32, i32, i32 }
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%eh.CatchableTypeArray.1 = type { i32, [1 x i32] }
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%eh.ThrowInfo = type { i32, i32, i32, i32 }
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%class.Obj = type { i8 }
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$"\01??_R0H@8" = comdat any
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$"_CT??_R0H@84" = comdat any
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$_CTA1H = comdat any
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$_TI1H = 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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@__ImageBase = external constant i8
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@"_CT??_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor2* @"\01??_R0H@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 -1, i32 0, i32 4, i32 0 }, section ".xdata", comdat
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@_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableType* @"_CT??_R0H@84" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32)] }, section ".xdata", comdat
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@_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%eh.CatchableTypeArray.1* @_CTA1H to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, section ".xdata", comdat
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; This is just a minimal check to verify that main was handled by WinEHPrepare.
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; CHECK: define void @"\01?test@@YAXXZ"()
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; CHECK: entry:
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; CHECK: call void (...) @llvm.frameescape
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; CHECK: invoke void @_CxxThrowException
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; CHECK: }
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; Function Attrs: uwtable
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define void @"\01?test@@YAXXZ"() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%o = alloca %class.Obj, align 1
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%tmp = alloca i32, align 4
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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store i32 1, i32* %tmp
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%0 = bitcast i32* %tmp to i8*
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invoke void @_CxxThrowException(i8* %0, %eh.ThrowInfo* @_TI1H) #3
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to label %unreachable unwind label %lpad
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lpad: ; preds = %entry
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%1 = landingpad { i8*, i32 }
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catch i8* null
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%2 = extractvalue { i8*, i32 } %1, 0
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store i8* %2, i8** %exn.slot
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%3 = extractvalue { i8*, i32 } %1, 1
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store i32 %3, i32* %ehselector.slot
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call void @"\01??1Obj@@QEAA@XZ"(%class.Obj* %o) #2
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br label %catch
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catch: ; preds = %lpad
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%exn = load i8*, i8** %exn.slot
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call void @llvm.eh.begincatch(i8* %exn, i8* null) #2
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invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #3
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to label %unreachable unwind label %lpad1
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lpad1: ; preds = %catch
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%4 = landingpad { i8*, i32 }
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cleanup
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%5 = extractvalue { i8*, i32 } %4, 0
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store i8* %5, i8** %exn.slot
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%6 = extractvalue { i8*, i32 } %4, 1
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store i32 %6, i32* %ehselector.slot
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call void @llvm.eh.endcatch() #2
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br label %eh.resume
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try.cont: ; No predecessors!
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ret void
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eh.resume: ; preds = %lpad1
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%exn2 = load i8*, i8** %exn.slot
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%sel = load i32, i32* %ehselector.slot
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn2, 0
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%lpad.val3 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1
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resume { i8*, i32 } %lpad.val3
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unreachable: ; preds = %catch, %entry
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unreachable
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}
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; Verify that we inserted a stub invoke into the outlined cleanup handler.
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;
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; CHECK-LABEL: define internal void @"\01?test@@YAXXZ.cleanup"(i8*, i8*)
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; CHECK: entry:
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; CHECK: call i8* @llvm.framerecover
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; CHECK: call void @"\01??1Obj@@QEAA@XZ"
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; CHECK: invoke void @llvm.donothing()
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; CHECK: to label %[[SPLIT_LABEL:.+]] unwind label %[[LPAD_LABEL:.+]]
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;
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; CHECK: [[SPLIT_LABEL]]
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;
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; CHECK: [[LPAD_LABEL]]
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; CHECK: landingpad { i8*, i32 }
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; CHECK: cleanup
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; CHECK: unreachable
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; CHECK: }
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declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
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declare i32 @__CxxFrameHandler3(...)
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; Function Attrs: nounwind
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declare void @"\01??1Obj@@QEAA@XZ"(%class.Obj*) #1
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; Function Attrs: nounwind
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declare void @llvm.eh.begincatch(i8* nocapture, i8* nocapture) #2
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; Function Attrs: nounwind
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declare void @llvm.eh.endcatch() #2
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attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind }
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attributes #3 = { noreturn }
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"PIC Level", i32 2}
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!1 = !{!"clang version 3.7.0 (trunk 235214) (llvm/trunk 235213)"}
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