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