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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
98 lines
3.2 KiB
LLVM
98 lines
3.2 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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; void test()
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; {
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; try {
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; may_throw();
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; } catch (...) {
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; handle_exception();
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; }
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; }
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;
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; Parts of the IR have been hand-edited to simplify the test case.
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; The full IR will be restored when Windows C++ EH support is complete.
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; ModuleID = 'catch-all.cpp'
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc"
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; The function entry in this case remains unchanged.
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; CHECK: define void @_Z4testv()
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; CHECK: entry:
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; CHECK: invoke void @_Z9may_throwv()
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; CHECK: to label %invoke.cont unwind label %[[LPAD_LABEL:lpad[0-9]*]]
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; Function Attrs: uwtable
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define void @_Z4testv() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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entry:
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%exn.slot = alloca i8*
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%ehselector.slot = alloca i32
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invoke void @_Z9may_throwv()
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to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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br label %try.cont
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; CHECK: [[LPAD_LABEL]]:{{[ ]+}}; preds = %entry
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; CHECK: landingpad { i8*, i32 }
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; CHECK-NEXT: catch i8* null
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; CHECK-NEXT: [[RECOVER:\%.+]] = call i8* (...) @llvm.eh.actions(i32 1, i8* null, i32 -1, i8* (i8*, i8*)* @_Z4testv.catch)
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; CHECK-NEXT: indirectbr i8* [[RECOVER]], [label %try.cont]
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lpad: ; preds = %entry
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%tmp = landingpad { i8*, i32 }
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catch i8* null
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%tmp1 = extractvalue { i8*, i32 } %tmp, 0
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store i8* %tmp1, i8** %exn.slot
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%tmp2 = extractvalue { i8*, i32 } %tmp, 1
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store i32 %tmp2, i32* %ehselector.slot
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br label %catch
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; CHECK-NOT: 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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call void @_Z16handle_exceptionv()
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br label %invoke.cont2
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; CHECK-NOT: invoke.cont2:
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invoke.cont2: ; preds = %catch
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call void @llvm.eh.endcatch()
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br label %try.cont
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try.cont: ; preds = %invoke.cont2, %invoke.cont
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ret void
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; CHECK: }
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}
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; CHECK: define internal i8* @_Z4testv.catch(i8*, i8*)
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; CHECK: entry:
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; CHECK: call void @_Z16handle_exceptionv()
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; CHECK: ret i8* blockaddress(@_Z4testv, %try.cont)
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; CHECK: }
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declare void @_Z9may_throwv() #1
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declare i32 @__CxxFrameHandler3(...)
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declare void @llvm.eh.begincatch(i8*, i8*)
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declare void @_Z16handle_exceptionv() #1
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declare void @llvm.eh.endcatch()
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attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { noinline noreturn nounwind }
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attributes #3 = { nounwind }
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attributes #4 = { noreturn nounwind }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.7.0 (trunk 226027)"}
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