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* Objective-C was generating EH frame info like this:Bill Wendling2007-09-181-10/+11
| | | | | | | | | | "_-[NSString(local) isNullOrNil]".eh = 0 .no_dead_strip "_-[NSString(local) isNullOrNil]".eh The ".eh" should be inside the quotes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42074 91177308-0d34-0410-b5e6-96231b3b80d8
* Merge DenseMapKeyInfo & DenseMapValueInfo into DenseMapInfoChris Lattner2007-09-171-0/+1
| | | | | | | | Add a new DenseMapInfo::isEqual method to allow clients to redefine the equality predicate used when probing the hash table. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42042 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a bool to indicate if we should set the "indirect encoding" bit in the DwarfBill Wendling2007-09-111-1/+6
| | | | | | | | information for EH. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41852 91177308-0d34-0410-b5e6-96231b3b80d8
* The personality function on Darwin needs a global stub. We then refer toBill Wendling2007-09-111-20/+9
| | | | | | | | that global stub instead of doing the ".set" thingy we were doing before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41838 91177308-0d34-0410-b5e6-96231b3b80d8
* Due to label merging, the last label for an invokeDuncan Sands2007-09-051-3/+2
| | | | | | | | | may be the same as the first label for the following invoke. Remove a micro-optimization which was wrong in this case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41720 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR1628. When exception handling is turned on,Duncan Sands2007-09-051-77/+147
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | labels are generated bracketing each call (not just invokes). This is used to generate entries in the exception table required by the C++ personality. However it gets in the way of tail-merging. This patch solves the problem by no longer placing labels around ordinary calls. Instead we generate entries in the exception table that cover every instruction in the function that wasn't covered by an invoke range (the range given by the labels around the invoke). As an optimization, such entries are only generated for parts of the function that contain a call, since for the moment those are the only instructions that can throw an exception [1]. As a happy consequence, we now get a smaller exception table, since the same region can cover many calls. While there, I also implemented folding of invoke ranges - successive ranges are merged when safe to do so. Finally, if a selector contains only a cleanup, there's a special shorthand for it - place a 0 in the call-site entry. I implemented this while there. As a result, the exception table output (excluding filters) is now optimal - it cannot be made smaller [2]. The problem with throw filters is that folding them optimally is hard, and the benefit of folding them is minimal. [1] I tested that having trapping instructions (eg divide by zero) in such a region doesn't cause trouble. [2] It could be made smaller with the help of higher layers, eg by having branch folding reorder basic blocks ending in invokes with the same landing pad so they follow each other. I don't know if this is worth doing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41718 91177308-0d34-0410-b5e6-96231b3b80d8
* Emit proper "secrel" directive, where possible. This fixes invalid asm ↵Anton Korobeynikov2007-09-021-43/+28
| | | | | | | | | syntax of debug info on mingw32. Also, cleanup some stuff. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41675 91177308-0d34-0410-b5e6-96231b3b80d8
* Add explicit keywords and remove spurious trailing semicolons.Dan Gohman2007-08-271-9/+10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41482 91177308-0d34-0410-b5e6-96231b3b80d8
* The personality function might need to be declared as:Bill Wendling2007-08-251-5/+18
| | | | | | | | | | .set Lset0,___gxx_personality_v0-. .long Lset0 on some targets. Make it so! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41385 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix minor doxygen nits.Reid Spencer2007-08-051-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40854 91177308-0d34-0410-b5e6-96231b3b80d8
* Minor cleanup:Anton Korobeynikov2007-07-251-1/+1
| | | | | | | | - Split EH and debug infiormation - Make DwarfWriter more verbose in some cases git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40481 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix some uses of dyn_cast to be uses of cast.Dan Gohman2007-07-231-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40443 91177308-0d34-0410-b5e6-96231b3b80d8
* It's not necessary to do rounding for alloca operations when the requestedDan Gohman2007-07-181-0/+3616
alignment is equal to the stack alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
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