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llvm-6502/test/Analysis/Lint/cppeh-catch-intrinsics-clean.ll

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Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
; RUN: opt -lint -disable-output < %s
; This test is meant to prove that the verifier does not report errors for correct
; use of the llvm.eh.begincatch and llvm.eh.endcatch intrinsics.
target triple = "x86_64-pc-windows-msvc"
Make llvm.eh.begincatch use an outparam Ultimately, __CxxFrameHandler3 needs us to put a stack offset in a table, and it will take responsibility for copying the exception object into that slot. Modelling the exception object as an SSA value returned by begincatch isn't going to work in general, so make it use an output parameter. Reviewers: andrew.w.kaylor Differential Revision: http://reviews.llvm.org/D7920 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231086 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-03 17:41:09 +00:00
declare void @llvm.eh.begincatch(i8*, i8*)
Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
declare void @llvm.eh.endcatch()
@_ZTIi = external constant i8*
; Function Attrs: uwtable
Move the personality function from LandingPadInst to Function 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
2015-06-17 20:52:32 +00:00
define void @test_ref_clean() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
entry:
invoke void @_Z9may_throwv()
to label %try.cont unwind label %lpad
lpad: ; preds = %entry
Move the personality function from LandingPadInst to Function 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
2015-06-17 20:52:32 +00:00
%0 = landingpad { i8*, i32 }
Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
catch i8* bitcast (i8** @_ZTIi to i8*)
%exn = extractvalue { i8*, i32 } %0, 0
%sel = extractvalue { i8*, i32 } %0, 1
%1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
%matches = icmp eq i32 %sel, %1
br i1 %matches, label %catch, label %eh.resume
catch: ; preds = %lpad
Make llvm.eh.begincatch use an outparam Ultimately, __CxxFrameHandler3 needs us to put a stack offset in a table, and it will take responsibility for copying the exception object into that slot. Modelling the exception object as an SSA value returned by begincatch isn't going to work in general, so make it use an output parameter. Reviewers: andrew.w.kaylor Differential Revision: http://reviews.llvm.org/D7920 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231086 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-03 17:41:09 +00:00
call void @llvm.eh.begincatch(i8* %exn, i8* null)
Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
call void @_Z10handle_intv()
br label %invoke.cont2
invoke.cont2: ; preds = %catch
call void @llvm.eh.endcatch()
br label %try.cont
try.cont: ; preds = %invoke.cont2, %entry
ret void
eh.resume: ; preds = %catch.dispatch
resume { i8*, i32 } %0
}
; Function Attrs: uwtable
Move the personality function from LandingPadInst to Function 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
2015-06-17 20:52:32 +00:00
define void @test_ref_clean_multibranch() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
entry:
invoke void @_Z9may_throwv()
to label %invoke.cont unwind label %lpad
invoke.cont:
invoke void @_Z9may_throwv()
to label %invoke.cont unwind label %lpad1
lpad: ; preds = %entry
Move the personality function from LandingPadInst to Function 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
2015-06-17 20:52:32 +00:00
%0 = landingpad { i8*, i32 }
Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
catch i8* bitcast (i8** @_ZTIi to i8*)
%exn = extractvalue { i8*, i32 } %0, 0
%sel = extractvalue { i8*, i32 } %0, 1
%1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
%matches = icmp eq i32 %sel, %1
br i1 %matches, label %catch, label %eh.resume
invoke void @_Z9may_throwv()
to label %try.cont unwind label %lpad
lpad1: ; preds = %entry
Move the personality function from LandingPadInst to Function 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
2015-06-17 20:52:32 +00:00
%l1.0 = landingpad { i8*, i32 }
Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
cleanup
catch i8* bitcast (i8** @_ZTIi to i8*)
%exn1 = extractvalue { i8*, i32 } %l1.0, 0
%sel1 = extractvalue { i8*, i32 } %l1.0, 1
%l1.1 = call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*))
%matchesl1 = icmp eq i32 %sel1, %l1.1
br i1 %matchesl1, label %catch, label %eh.resume
catch: ; preds = %lpad, %lpad1
%exn2 = phi i8* [%exn, %lpad], [%exn1, %lpad1]
%sel2 = phi i32 [%sel, %lpad], [%sel1, %lpad1]
Make llvm.eh.begincatch use an outparam Ultimately, __CxxFrameHandler3 needs us to put a stack offset in a table, and it will take responsibility for copying the exception object into that slot. Modelling the exception object as an SSA value returned by begincatch isn't going to work in general, so make it use an output parameter. Reviewers: andrew.w.kaylor Differential Revision: http://reviews.llvm.org/D7920 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231086 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-03 17:41:09 +00:00
call void @llvm.eh.begincatch(i8* %exn2, i8* null)
Adding support for llvm.eh.begincatch and llvm.eh.endcatch intrinsics and beginning the documentation of native Windows exception handling. Differential Revision: http://reviews.llvm.org/D7398 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228733 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-10 19:52:43 +00:00
call void @_Z10handle_intv()
%matches1 = icmp eq i32 %sel2, 0
br i1 %matches1, label %invoke.cont2, label %invoke.cont3
invoke.cont2: ; preds = %catch
call void @llvm.eh.endcatch()
br label %try.cont
invoke.cont3: ; preds = %catch
call void @llvm.eh.endcatch()
br label %eh.resume
try.cont: ; preds = %invoke.cont2, %entry
ret void
eh.resume: ; preds = %catch.dispatch
%lpad.val = insertvalue { i8*, i32 } undef, i32 0, 1
resume { i8*, i32 } %lpad.val
}
declare void @_Z9may_throwv()
declare i32 @__CxxFrameHandler3(...)
; Function Attrs: nounwind readnone
declare i32 @llvm.eh.typeid.for(i8*)
declare void @_Z10handle_intv()
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