Commit Graph

10 Commits

Author SHA1 Message Date
Duncan Sands
6531d477a2 Clarify a bit. Based on feedback by Talin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61470 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-29 15:27:32 +00:00
Misha Brukman
444087057a Global replace of yellow W3C "valid HTML/CSS" icons with blue ones.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60880 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-11 17:34:48 +00:00
Bill Wendling
d40bc4ad43 Validation fixes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42232 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-22 10:17:08 +00:00
Anton Korobeynikov
8806c7b1f5 Split eh.select / eh.typeid.for intrinsics into i32/i64 versions. This is needed, because they just "mark" register
liveins and we let frontend solve type issue, not lowering code :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41763 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-07 11:39:35 +00:00
Duncan Sands
6590b0457c There is an impedance matching problem between LLVM and
gcc exception handling: if an exception unwinds through
an invoke, then execution must branch to the invoke's
unwind target.  We previously tried to enforce this by
appending a cleanup action to every selector, however
this does not always work correctly due to an optimization
in the C++ unwinding runtime: if only cleanups would be
run while unwinding an exception, then the program just
terminates without actually executing the cleanups, as
invoke semantics would require.  I was hoping this
wouldn't be a problem, but in fact it turns out to be the
cause of all the remaining failures in the LLVM testsuite
(these also fail with -enable-correct-eh-support, so turning
on -enable-eh didn't make things worse!).  Instead we need
to append a full-blown catch-all to the end of each
selector.  The correct way of doing this depends on the
personality function, i.e. it is language dependent, so
can only be done by gcc.  Thus this patch which generalizes
the eh.selector intrinsic so that it can handle all possible
kinds of action table entries (before it didn't accomodate
cleanups): now 0 indicates a cleanup, and filters have to be
specified using the number of type infos plus one rather than
the number of type infos.  Related gcc patches will cause
Ada to pass a cleanup (0) to force the selector to always
fire, while C++ will use a C++ catch-all (null).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41484 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-27 15:47:50 +00:00
Duncan Sands
cf26d7ccac Extend eh.selector to support both catches and filters.
Drop the eh.filter intrinsic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37875 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-04 20:52:51 +00:00
Duncan Sands
fb0a64a172 Fix typos.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36124 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-16 13:02:27 +00:00
Duncan Sands
b0a1cbff0d Correct typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35989 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-14 12:30:27 +00:00
Duncan Sands
8036ca47e2 Various hopefully correct easy fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35506 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-30 12:22:09 +00:00
Jim Laskey
d0d39b685b First draft of exception handling doc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35100 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-14 19:29:42 +00:00