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* Enable -misched-cyclicpath by default.Andrew Trick2013-09-091-1/+1
| | | | llvm-svn: 190367
* Debug Info: move DIScope::getContext back from DwarfDebug.Manman Ren2013-09-093-27/+1
| | | | | | | | This partially reverts r190330. DIScope::getContext now returns DIScopeRef instead of DIScope. We construct a DIScopeRef from DIScope when we are dealing with subprogram, lexical block or name space. llvm-svn: 190362
* mi-sched: smooth out the cyclicpath heuristic.Andrew Trick2013-09-091-1/+4
| | | | | | | | | | | | | | | Arnold's idea. I generally try to avoid stateful heuristics because it can make debugging harder. However, we need a way to prevent the latency priority from dominating, and it somewhat makes sense to schedule aggressively for latency only within an issue group. Swift in particular likes this, and it doesn't hurt anyone else: | Benchmarks/MiBench/consumer-lame | 10.39% | | Benchmarks/Misc/himenobmtxpa | 9.63% | llvm-svn: 190360
* white spaces and long linesJack Carter2013-09-091-45/+81
| | | | llvm-svn: 190358
* Always add global names. We're adding them in the rest of the codeEric Christopher2013-09-091-3/+2
| | | | | | | | | as well as types. No functional change as they're not emitted unless the option is true anyhow. llvm-svn: 190346
* Rename for consistency.Eric Christopher2013-09-092-4/+4
| | | | llvm-svn: 190345
* Call generateCompactUnwindEncodings() right before we need to output the ↵Bill Wendling2013-09-091-4/+3
| | | | | | | | | | | | | frame information. There are more than one paths to where the frame information is emitted. Place the call to generateCompactUnwindEncodings() into the method which outputs the frame information, thus ensuring that the encoding is there for every path. This involved threading the MCAsmBackend object through to this method. <rdar://problem/13623355> llvm-svn: 190335
* Debug Info: Use DIScopeRef for DIType::getContext.Manman Ren2013-09-092-7/+7
| | | | | | | | | | | | | | | | | In DIBuilder, the context field of a TAG_member is updated to use the scope reference. Verifier is updated accordingly. DebugInfoFinder now needs to generate a type identifier map to have access to the actual scope. Same applies for BreakpointPrinter. processModule of DebugInfoFinder is called during initialization phase of the verifier to make sure the type identifier map is constructed early enough. We are now able to unique a simple class as demonstrated by the added testing case. llvm-svn: 190334
* Debug Info: move DIScope::getContext to DwarfDebug.Manman Ren2013-09-093-5/+31
| | | | | | | | | | | | DIScope::getContext is a wrapper function that calls the specific getContext method on each subclass. When we switch DIType::getContext to return DIScopeRef instead of DIScope, DIScope::getContext can no longer return a DIScope without a type identifier map. DIScope::getContext is only used by DwarfDebug, so we move it to DwarfDebug to have easy access to the type identifier map. llvm-svn: 190330
* Revert patches to add case-range support for PR1255.Bob Wilson2013-09-092-36/+53
| | | | | | | | | | | | | | | | | The work on this project was left in an unfinished and inconsistent state. Hopefully someone will eventually get a chance to implement this feature, but in the meantime, it is better to put things back the way the were. I have left support in the bitcode reader to handle the case-range bitcode format, so that we do not lose bitcode compatibility with the llvm 3.3 release. This reverts the following commits: 155464, 156374, 156377, 156613, 156704, 156757, 156804 156808, 156985, 157046, 157112, 157183, 157315, 157384, 157575, 157576, 157586, 157612, 157810, 157814, 157815, 157880, 157881, 157882, 157884, 157887, 157901, 158979, 157987, 157989, 158986, 158997, 159076, 159101, 159100, 159200, 159201, 159207, 159527, 159532, 159540, 159583, 159618, 159658, 159659, 159660, 159661, 159703, 159704, 160076, 167356, 172025, 186736 llvm-svn: 190328
* Debug Info: Move isSubprogramContext from DebugInfo to DwarfDebug.Manman Ren2013-09-093-1/+18
| | | | | | | | | | This helper function needs the type identifier map when we switch DIType::getContext to return DIScopeRef instead of DIScope. Since isSubprogramContext is used by DwarfDebug only, We move it to DwarfDebug to have easy access to the map. llvm-svn: 190325
* Debug Info: Rename DITypeRef to DIScopeRef.Manman Ren2013-09-092-5/+5
| | | | | | | | | | | | | | | | | | | | | | A reference to a scope is more general than a reference to a type since DIType is a subclass of DIScope. A reference to a type can be either an identifier for the type or the DIType itself, while a reference to a scope can be either an identifier for the type (when the scope is indeed a type) or the DIScope itself. A reference to a type and a reference to a scope will be resolved in the same way. The only difference is in the verifier when a field is a reference to a type (i.e. the containing type field of a DICompositeType) or a field is a reference to a scope (i.e. the context field of a DIType). This is to get ready for switching DIType::getContext to return DIScopeRef instead of DIScope. Tighten up isTypeRef and isScopeRef to make sure the identifier is not empty and the MDNode is DIType for TypeRef and DIScope for ScopeRef. llvm-svn: 190322
* [stackprotector] Modernize code with IRBuilderBenjamin Kramer2013-09-091-32/+17
| | | | llvm-svn: 190317
* [ARMv8] Prevent generation of deprecated IT blocks on ARMv8 in Thumb mode.Joey Gouly2013-09-091-21/+18
| | | | | | | | | IT blocks can only be one instruction lonf, and can only contain a subset of the 16 instructions. Patch by Artyom Skrobov! llvm-svn: 190309
* Generate compact unwind encoding from CFI directives.Bill Wendling2013-09-091-3/+4
| | | | | | | | | | | | | | | We used to generate the compact unwind encoding from the machine instructions. However, this had the problem that if the user used `-save-temps' or compiled their hand-written `.s' file (with CFI directives), we wouldn't generate the compact unwind encoding. Move the algorithm that generates the compact unwind encoding into the MCAsmBackend. This way we can generate the encoding whether the code is from a `.ll' or `.s' file. <rdar://problem/13623355> llvm-svn: 190290
* Debug Info: Use identifier to reference DIType in containing type field ofManman Ren2013-09-071-1/+1
| | | | | | | | a DISubprogram. Verifier is updated accordingly. llvm-svn: 190229
* Debug Info: Use identifier to reference DIType in containing type field ofManman Ren2013-09-061-1/+1
| | | | | | | | a DICompositeType. Verifier is updated accordingly. llvm-svn: 190190
* mi-sched: cleanup register pressure update, remove a FIXME.Andrew Trick2013-09-061-19/+26
| | | | llvm-svn: 190181
* mi-sched: improve regpressure tracing.Andrew Trick2013-09-061-2/+7
| | | | llvm-svn: 190180
* mi-sched: print tree size in -view-misched-dagsAndrew Trick2013-09-061-1/+5
| | | | llvm-svn: 190179
* mi-sched: register pressure update tracing.Andrew Trick2013-09-061-0/+4
| | | | llvm-svn: 190178
* mi-sched: Reorder Cyclicpath (latency) and CriticalMax (pressure) heuristics.Andrew Trick2013-09-061-4/+4
| | | | | | The latency based scheduling could induce spills in some cases. llvm-svn: 190177
* Added MachineSchedPolicy.Andrew Trick2013-09-061-35/+51
| | | | | | | | Allow subtargets to customize the generic scheduling strategy. This is convenient for targets that don't need to add new heuristics by specializing the strategy. llvm-svn: 190176
* avoid unnecessary direct access to LiveInterval::rangesMatthias Braun2013-09-063-31/+30
| | | | llvm-svn: 190170
* remove unused argument from LiveRanges::join()Matthias Braun2013-09-062-4/+2
| | | | llvm-svn: 190169
* remove pointless assertMatthias Braun2013-09-061-2/+0
| | | | | | The if above it ensures the property anyway. llvm-svn: 190168
* fix commentMatthias Braun2013-09-061-1/+1
| | | | | | There's no 'B3' in the example. llvm-svn: 190167
* SelectionDAG: create correct BooleanContent constantsTim Northover2013-09-062-2/+11
| | | | | | | | | | | | | | | Occasionally DAGCombiner can spot that a SETCC operation is completely redundant and reduce it to "all true" or "all false". If this happens to a vector, the value produced has to take account of what a normal comparison would have produced, which may be an all-1s bitmask. The fix in SelectionDAG.cpp is tested, however, as far as I can see the code in TargetLowering.cpp is possibly unreachable and almost certainly irrelevant when triggered so there are no tests. However, I believe it's still clearly the right change and may save someone else some hassle if it suddenly becomes reachable. So I'm doing it anyway. llvm-svn: 190147
* Debug Info: Use identifier to reference DIType in base type field ofManman Ren2013-09-053-1/+14
| | | | | | | | | | | | | | | | | | | | | | ptr_to_member. We introduce a new class DITypeRef that represents a reference to a DIType. It wraps around a Value*, which can be either an identifier in MDString or an actual MDNode. The class has a helper function "resolve" that finds the actual MDNode for a given DITypeRef. We specialize getFieldAs to return a field that is a reference to a DIType. To correctly access the base type field of ptr_to_member, getClassType now calls getFieldAs<DITypeRef> to return a DITypeRef. Also add a typedef for DITypeIdentifierMap and a helper generateDITypeIdentifierMap in DebugInfo.h. In DwarfDebug.cpp, we keep a DITypeIdentifierMap and call generateDITypeIdentifierMap to actually populate the map. Verifier is updated accordingly. llvm-svn: 190081
* Move accelerator table defines and constants to Dwarf.h sinceEric Christopher2013-09-054-56/+14
| | | | | | | | we're proposing it for DWARF5. No functional change intended. llvm-svn: 190074
* Reformat.Eric Christopher2013-09-052-99/+103
| | | | llvm-svn: 190064
* mi-sched: Force bottom up scheduling for generic targets.Andrew Trick2013-09-041-3/+23
| | | | | | | | | Fast register pressure tracking currently only takes effect during bottom up scheduling. Forcing this is a bit faster and simpler for targets that don't have many scheduling constraints and don't need top-down scheduling. llvm-svn: 190014
* Remove hack ensuring that darwin didn't produce dwarf > 3 for modulesEric Christopher2013-09-041-5/+1
| | | | | | | | without a limiting factor. Update all testcases accordingly. llvm-svn: 190002
* Revert "Revert r189902 as the workaround shouldn't be necessary anymore."Eric Christopher2013-09-041-1/+5
| | | | | | Needs testcase updates. llvm-svn: 190000
* Revert r189902 as the workaround shouldn't be necessary anymore.Eric Christopher2013-09-041-5/+1
| | | | llvm-svn: 189999
* comment typoAndrew Trick2013-09-041-1/+1
| | | | llvm-svn: 189997
* Remove dead subtree limit code.Andrew Trick2013-09-041-9/+0
| | | | llvm-svn: 189995
* -view-misched-dags, better pruning.Andrew Trick2013-09-041-1/+1
| | | | llvm-svn: 189994
* mi-sched: DEBUG cleanup, call tracePick for unidirectional scheduling.Andrew Trick2013-09-041-0/+2
| | | | llvm-svn: 189993
* 80 columnsAndrew Trick2013-09-041-2/+2
| | | | llvm-svn: 189992
* mi-sched: Suppress register pressure tracking when the scheduling window is ↵Andrew Trick2013-09-041-16/+29
| | | | | | | | | | too small. If the instruction window is < NumRegs/2, pressure tracking is not likely to be effective. The scheduler has to process a very large number of tiny blocks. We want this to be fast. llvm-svn: 189991
* mi-sched: Load clustering is a bit to expensive to enable unconditionally.Andrew Trick2013-09-041-1/+1
| | | | llvm-svn: 189990
* mi-sched: Reuse an invalid HazardRecognizer to save compile time.Andrew Trick2013-09-041-6/+14
| | | | llvm-svn: 189989
* mi-sched: bypass heuristic checks when regpressure tracking is disabled.Andrew Trick2013-09-042-27/+32
| | | | llvm-svn: 189988
* Added -misched-regpressure option.Andrew Trick2013-09-042-21/+51
| | | | | | | | Register pressure tracking is half the complexity of the scheduler. It's useful to be able to turn it off for compile time and performance comparisons. llvm-svn: 189987
* Unify and clean up.Eric Christopher2013-09-041-9/+4
| | | | llvm-svn: 189977
* Revert "Revert "Remove the darwin gdb option, that version of gdb is now ↵Michael Gottesman2013-09-042-36/+7
| | | | | | | | | | | | | | dead and the rest of the compatibility should be done on a dwarf-N level."" This reverts commit r189913. Talked with Eric on IRC. I am going to XFAIL the failing test since it is using what Eric described as "the member hack" which was needed on that old GDB. Sorry for the noise! llvm-svn: 189914
* Revert "Remove the darwin gdb option, that version of gdb is now dead and ↵Michael Gottesman2013-09-042-7/+36
| | | | | | | | | | | | the rest of the compatibility should be done on a dwarf-N level." This reverts commit r189903. This commit broke the phase 1 buildbot for a while. http://lab.llvm.org:8013/builders/clang-x86_64-darwin11-nobootstrap-RAincremental/builds/6684 llvm-svn: 189913
* Remove the darwin gdb option, that version of gdb is now dead andEric Christopher2013-09-042-36/+7
| | | | | | the rest of the compatibility should be done on a dwarf-N level. llvm-svn: 189903
* Make the default dwarf version 3 for darwin when we can't find oneEric Christopher2013-09-041-1/+5
| | | | | | in the module. Add a FIXME with a comment about darwin's ld. llvm-svn: 189902
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