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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
118 lines
3.2 KiB
LLVM
118 lines
3.2 KiB
LLVM
; RUN: opt %s -inline -S | FileCheck %s
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declare void @external_func()
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declare void @abort()
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@exception_inner = external global i8
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@exception_outer = external global i8
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@condition = external global i1
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; Check for a bug in which multiple "resume" instructions in the
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; inlined function caused "catch i8* @exception_outer" to appear
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; multiple times in the resulting landingpad.
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define internal void @inner_multiple_resume() personality i8* null {
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invoke void @external_func()
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to label %cont unwind label %lpad
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cont:
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ret void
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lpad:
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%lp = landingpad i32
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catch i8* @exception_inner
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%cond = load i1, i1* @condition
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br i1 %cond, label %resume1, label %resume2
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resume1:
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resume i32 1
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resume2:
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resume i32 2
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}
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define void @outer_multiple_resume() personality i8* null {
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invoke void @inner_multiple_resume()
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to label %cont unwind label %lpad
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cont:
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ret void
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lpad:
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%lp = landingpad i32
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catch i8* @exception_outer
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resume i32 %lp
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}
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; CHECK: define void @outer_multiple_resume()
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; CHECK: %lp.i = landingpad
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; CHECK-NEXT: catch i8* @exception_inner
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; CHECK-NEXT: catch i8* @exception_outer
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; Check that there isn't another "catch" clause:
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; CHECK-NEXT: load
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; Check for a bug in which having a "resume" and a "call" in the
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; inlined function caused "catch i8* @exception_outer" to appear
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; multiple times in the resulting landingpad.
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define internal void @inner_resume_and_call() personality i8* null {
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call void @external_func()
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invoke void @external_func()
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to label %cont unwind label %lpad
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cont:
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ret void
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lpad:
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%lp = landingpad i32
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catch i8* @exception_inner
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resume i32 %lp
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}
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define void @outer_resume_and_call() personality i8* null {
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invoke void @inner_resume_and_call()
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to label %cont unwind label %lpad
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cont:
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ret void
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lpad:
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%lp = landingpad i32
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catch i8* @exception_outer
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resume i32 %lp
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}
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; CHECK: define void @outer_resume_and_call()
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; CHECK: %lp.i = landingpad
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; CHECK-NEXT: catch i8* @exception_inner
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; CHECK-NEXT: catch i8* @exception_outer
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; Check that there isn't another "catch" clause:
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; CHECK-NEXT: br
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; Check what happens if the inlined function contains an "invoke" but
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; no "resume". In this case, the inlined landingpad does not need to
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; include the "catch i8* @exception_outer" clause from the outer
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; function (since the outer function's landingpad will not be
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; reachable), but it's OK to include this clause.
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define internal void @inner_no_resume_or_call() personality i8* null {
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invoke void @external_func()
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to label %cont unwind label %lpad
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cont:
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ret void
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lpad:
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%lp = landingpad i32
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catch i8* @exception_inner
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; A landingpad might have no "resume" if a C++ destructor aborts.
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call void @abort() noreturn nounwind
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unreachable
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}
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define void @outer_no_resume_or_call() personality i8* null {
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invoke void @inner_no_resume_or_call()
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to label %cont unwind label %lpad
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cont:
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ret void
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lpad:
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%lp = landingpad i32
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catch i8* @exception_outer
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resume i32 %lp
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}
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; CHECK: define void @outer_no_resume_or_call()
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; CHECK: %lp.i = landingpad
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; CHECK-NEXT: catch i8* @exception_inner
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; CHECK-NEXT: catch i8* @exception_outer
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; Check that there isn't another "catch" clause:
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; CHECK-NEXT: call void @abort()
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