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path: root/llvm/lib/CodeGen/MachineModuleInfo.cpp
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* implement a new magic global "llvm.compiler.used" which is like llvm.used, butChris Lattner2009-07-201-1/+2
| | | | | | doesn't cause ".no_dead_strip" to be emitted on darwin. llvm-svn: 76399
* use stripPointerCasts to simplify some code.Chris Lattner2009-07-201-6/+4
| | | | llvm-svn: 76397
* llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.Torok Edwin2009-07-141-1/+1
| | | | | | | | | This adds location info for all llvm_unreachable calls (which is a macro now) in !NDEBUG builds. In NDEBUG builds location info and the message is off (it only prints "UREACHABLE executed"). llvm-svn: 75640
* assert(0) -> LLVM_UNREACHABLE.Torok Edwin2009-07-111-1/+2
| | | | | | | | | Make llvm_unreachable take an optional string, thus moving the cerr<< out of line. LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for NDEBUG builds. llvm-svn: 75379
* DebugLabelFolder ruthlessly deletes redundant labels. However, sometimes the ↵Devang Patel2009-04-101-1/+1
| | | | | | redundant labels is referenced by debug info somewhere else. This patch provies a way so that dwarf writer can mark labels as used. llvm-svn: 68813
* Remove dead code.Devang Patel2009-02-031-1/+0
| | | | llvm-svn: 63653
* Rename getAnalysisToUpdate to getAnalysisIfAvailable.Duncan Sands2009-01-281-1/+1
| | | | llvm-svn: 63198
* Removoe MachineModuleInfo methods (and related DebugInfoDesc class ↵Devang Patel2009-01-131-1711/+0
| | | | | | hierarchy) that were used to handle debug info. llvm-svn: 62199
* Keep "has debug info" big in MachineModuleInfo to avoid circular dependency ↵Devang Patel2009-01-131-0/+1
| | | | | | between AsmPrinter and CodeGen. llvm-svn: 62191
* Fix a couple of Dwarf bugs.Evan Cheng2008-12-101-3/+6
| | | | | | | - Emit DW_AT_byte_size for struct and union of size zero. - Emit DW_AT_declaration for forward type declaration. llvm-svn: 60812
* Fix an over aggressive assumption that struct decls will have a pointer toChris Lattner2008-11-101-1/+1
| | | | | | | an array that is empty. Instead of requiring this array, allow a null pointer. This shrinks all forward references of structs. llvm-svn: 58959
* Move the include of MachineLocation.h into MachineModuleInfo.hDan Gohman2008-10-161-1/+0
| | | | | | | | because it declares a std::vector<MachineMove>, and strict concept checking requires the definition of MachineMove to be available. llvm-svn: 57617
* Instead of setPreservesAll, just mark them preseving machine loop info and ↵Evan Cheng2008-09-221-1/+3
| | | | | | machine dominators. llvm-svn: 56475
* Mark several codegen passes as preserving all analysis.Evan Cheng2008-09-221-0/+5
| | | | llvm-svn: 56469
* Tidy up several unbeseeming casts from pointer to intptr_t.Dan Gohman2008-09-041-2/+2
| | | | llvm-svn: 55779
* Make the DICountVisitor not a visitor. This keeps us from calling virtualBill Wendling2008-07-091-33/+154
| | | | | | functions and junk. llvm-svn: 53279
* Use the canonical way to get an empty structure.Bill Wendling2008-07-071-3/+2
| | | | llvm-svn: 53206
* Use StringMap for greater justice!Bill Wendling2008-07-071-1/+1
| | | | llvm-svn: 53202
* Don't return std::vector by value, but pass it in by reference to be filled.Bill Wendling2008-07-031-12/+10
| | | | llvm-svn: 53123
* Revert my previous check-in that split up MachineModuleInfo. It turns out toBill Wendling2008-07-031-61/+818
| | | | | | slow the compiler down at -O0 some 30% or more. Ooops. llvm-svn: 53120
* Use the canonical form for getting an empty structure.Bill Wendling2008-07-021-10/+5
| | | | llvm-svn: 53003
* Sorry. I couldn't sleep at night knowing I put these ugly casts into the ↵Bill Wendling2008-07-021-2/+1
| | | | | | source tree. llvm-svn: 53001
* - Update comments. Bill Wendling2008-07-011-2/+4
| | | | | | - Don't use GlobalVariable::LinkageTypes when unsigned works. llvm-svn: 52987
* - Re-apply 52748 and friends with fix. GetConstantStringInfo() returns an ↵Evan Cheng2008-06-301-1/+4
| | | | | | | | empty string for ConstantAggregateZero case which surprises selectiondag. - Correctly handle memcpy from constant string which is zero-initialized. llvm-svn: 52891
* Revert (52748 and friends):Anton Korobeynikov2008-06-291-4/+1
| | | | | | | | | | | | Move GetConstantStringInfo to lib/Analysis. Remove string output routine from Constant. Update all callers. Change debug intrinsic api slightly to accomodate move of routine, these now return values instead of strings. This unbreaks llvm-gcc bootstrap. llvm-svn: 52884
* Reduce number of times .size() is called on a vector. Rename some variables toBill Wendling2008-06-271-16/+22
| | | | | | match normal naming scheme. llvm-svn: 52820
* Cruft left from patch revert...sorry. :-(Bill Wendling2008-06-271-3/+6
| | | | llvm-svn: 52808
* Reverting broken patch r52803.Bill Wendling2008-06-271-33/+20
| | | | llvm-svn: 52806
* - Remove a use of std::vector.Bill Wendling2008-06-271-12/+24
| | | | | | | - Make sure that we're not recalculating the size of a vector that never changes. llvm-svn: 52803
* Refactor the DebugInfoDesc stuff out of the MachineModuleInfo file. Clean upBill Wendling2008-06-271-791/+32
| | | | | | some uses of std::vector, where it's return std::vector by value. Yuck! llvm-svn: 52800
* Don't create a whole new string just to copy the elements into it.Owen Anderson2008-06-261-5/+3
| | | | llvm-svn: 52785
* Move GetConstantStringInfo to lib/Analysis. RemoveEric Christopher2008-06-261-1/+6
| | | | | | | | | string output routine from Constant. Update all callers. Change debug intrinsic api slightly to accomodate move of routine, these now return values instead of strings. llvm-svn: 52748
* Clean up the use of static and anonymous namespaces. This turned upDan Gohman2008-05-131-3/+5
| | | | | | | several things that were neither in an anonymous namespace nor static but not intended to be global. llvm-svn: 51017
* Recommitting EH patch; this should answer most of theDale Johannesen2008-04-021-6/+0
| | | | | | | | | | | | | | | review feedback. -enable-eh is still accepted but doesn't do anything. EH intrinsics use Dwarf EH if the target supports that, and are handled by LowerInvoke otherwise. The separation of the EH table and frame move data is, I think, logically figured out, but either one still causes full EH info to be generated (not sure how to split the metadata correctly). MachineModuleInfo::needsFrameInfo is no longer used and is removed. llvm-svn: 49064
* A quick nm audit turned up several fixed tables and objects that wereDan Gohman2008-03-251-3/+3
| | | | | | | marked read-write. Use const so that they can be allocated in a read-only segment. llvm-svn: 48800
* SDIsel processes llvm.dbg.declare by recording the variable debug ↵Evan Cheng2008-02-021-8/+10
| | | | | | | | | information descriptor and its corresponding stack frame index in MachineModuleInfo. This only works if the local variable is "homed" in the stack frame. It does not work for byval parameter, etc. Added ISD::DECLARE node type to represent llvm.dbg.declare intrinsic. Now the intrinsic calls are lowered into a SDNode and lives on through out the codegen passes. For now, since all the debugging information recording is done at isel time, when a ISD::DECLARE node is selected, it has the side effect of also recording the variable. This is a short term solution that should be fixed in time. llvm-svn: 46659
* Rename RecordLabel to RecordSourceLine because that's what it is doing.Evan Cheng2008-02-011-3/+3
| | | | llvm-svn: 46628
* Add an extra operand to LABEL nodes which distinguishes between debug, EH, ↵Evan Cheng2008-01-311-1/+1
| | | | | | or misc labels. This fixes the EH breakage. However I am not convinced this is *the* solution. llvm-svn: 46609
* Adjust loop per review feedback.Dale Johannesen2008-01-301-4/+2
| | | | llvm-svn: 46569
* Accept getelementptr starting at GV with all 0 indices as aDale Johannesen2008-01-301-0/+14
| | | | | | legitimate way of representing global variable GV in debug info. llvm-svn: 46565
* Use empty() instead of comparing size() with zero.Dan Gohman2008-01-291-1/+1
| | | | llvm-svn: 46514
* Do not mark EH tables no-dead-strip unless theDale Johannesen2008-01-161-0/+15
| | | | | | associated function is so marked. llvm-svn: 46088
* remove #includageChris Lattner2008-01-071-3/+0
| | | | llvm-svn: 45697
* Remove attribution from file headers, per discussion on llvmdev.Chris Lattner2007-12-291-2/+2
| | | | llvm-svn: 45418
* The C++ exception handling personality function wantsDuncan Sands2007-12-191-2/+1
| | | | | | | | | | | | | | | | | | | | | | | to know about calls that cannot throw ('nounwind'): if such a call does throw for some reason then the personality will terminate the program. The distinction between an ordinary call and a nounwind call is that an ordinary call gets an entry in the exception table but a nounwind call does not. This patch sets up the exception table appropriately. One oddity is that I've chosen to bracket nounwind calls with labels (like invokes) - the other choice would have been to bracket ordinary calls with labels. While bracketing ordinary calls is more natural (because bracketing by labels would then correspond exactly to getting an entry in the exception table), I didn't do it because introducing labels impedes some optimizations and I'm guessing that ordinary calls occur more often than nounwind calls. This fixes the gcc filter2 eh test, at least at -O0 (the inliner needs some tweaking at higher optimization levels). llvm-svn: 45197
* Change the PointerType api for creating pointer types. The old functionality ↵Christopher Lamb2007-12-171-2/+2
| | | | | | of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new prototype of PointerType::get() requires both a type and an address space. llvm-svn: 45082
* Provide a way to update DescGlobals cache directly.Devang Patel2007-11-301-0/+6
| | | | llvm-svn: 44446
* Fix PR1628. When exception handling is turned on,Duncan Sands2007-09-051-8/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. llvm-svn: 41718
* There is an impedance matching problem between LLVM andDuncan Sands2007-08-271-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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). llvm-svn: 41484
* Long live the exception handling!Anton Korobeynikov2007-07-141-0/+4
| | | | | | | | | | | | | | | This patch fills the last necessary bits to enable exceptions handling in LLVM. Currently only on x86-32/linux. In fact, this patch adds necessary intrinsics (and their lowering) which represent really weird target-specific gcc builtins used inside unwinder. After corresponding llvm-gcc patch will land (easy) exceptions should be more or less workable. However, exceptions handling support should not be thought as 'finished': I expect many small and not so small glitches everywhere. llvm-svn: 39855
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