summaryrefslogtreecommitdiffstats
path: root/llvm/lib/CodeGen
Commit message (Collapse)AuthorAgeFilesLines
...
* Fix double FGETSIGN to work on x86_32; followup to 132396.Stuart Hastings2011-06-011-3/+6
| | | | | | rdar://problem/5660695 llvm-svn: 132411
* Turn on FGETSIGN for x86. Followup to 132388. rdar://problem/5660695Stuart Hastings2011-06-011-6/+2
| | | | llvm-svn: 132396
* This patch is another step in the direction of adding vector select. In thisNadav Rotem2011-06-011-1/+28
| | | | | | | | | patch we add a flag to enable a new type legalization decision - to promote integer elements in vectors. Currently, the rest of the codegen does not support this kind of legalization. This flag will be removed when the transition is complete. llvm-svn: 132394
* Add an issue width check to the postRA scheduler. Patch by Max Kazakov!Andrew Trick2011-06-011-0/+6
| | | | | | | | | | For targets with no itinerary (x86) it is a nop by default. For targets with issue width already expressed in the itinerary (ARM) it bypasses a scoreboard check but otherwise does not affect the schedule. It does make the code more consistent and complete and allows new targets to specify their issue width in an arbitrary way. llvm-svn: 132385
* The ARM stuff already calls the Resume function, not the Resume_or_Rethrow. ItBill Wendling2011-06-011-4/+1
| | | | | | | | | | | | | turns out that it could cause an infinite loop in some situations. If this code is triggered and it converts a cleanup into a catchall, but that cleanup was in already in a cleanup, then the _Unwind_SjLj_Resume could infinite loop. I.e., the code doesn't consume the exception object and passes it on to _Unwind_SjLj_Resume. But _USjLjR expects it to be consumed (since it's landing at a catchall instead of a cleanup). So it uses the values that are presently there, which are the values that tell it to jump to the fake landing pad. <rdar://problem/9508402> llvm-svn: 132381
* Incomplete type may not have corresponding DIE, so do not check DIEEntry ↵Devang Patel2011-06-012-5/+6
| | | | | | eagerly. llvm-svn: 132377
* Refactor.Devang Patel2011-05-312-10/+9
| | | | llvm-svn: 132373
* Include global types, that are referenced through local variables, in ↵Devang Patel2011-05-312-7/+8
| | | | | | debug_pubtypes list. llvm-svn: 132371
* Simplify the eviction policy by making the failsafe explicit.Jakob Stoklund Olesen2011-05-311-44/+97
| | | | | | | | | | | | | | | | When assigned ranges are evicted, they are put in the RS_Evicted stage and are not allowed to evict anything else. That prevents looping automatically. When evicting ranges just to get a cheaper register, use only spill weights to find the possible candidates. Avoid breaking hints for this purpose, it is not worth it. Start implementing more complex eviction heuristics, guarded by the temporary -complex-eviction flag. The initial version permits a heavier range to be evicted if it doesn't have any uses where the evicting range is live. This makes it a good candidate for live ranfge splitting. llvm-svn: 132358
* Reapply r132245 with a fix for the bug that broke the darwin9/i386 build.Jakob Stoklund Olesen2011-05-303-55/+72
| | | | llvm-svn: 132309
* Emit the handler's data area. For GCC-style exceptions under Win64, theCharles Davis2011-05-301-0/+21
| | | | | | | handler's data area starts with a 4-byte reference to the personality function, followed by the DWARF LSDA. llvm-svn: 132302
* Revert r132245, "Create two BlockInfo entries when a live range is ↵Jakob Stoklund Olesen2011-05-293-71/+55
| | | | | | | | discontinuous through a block." This commit seems to have broken a darwin 9 tester. llvm-svn: 132299
* Fix PR10046 by updating LiveVariables kill info when splitting live ranges.Jakob Stoklund Olesen2011-05-291-2/+39
| | | | | | | | | | | | | This only affects targets like Mips where branch instructions may kill virtual registers. Most other targets branch on flag values, so virtual registers are not involved. The problem is that MachineBasicBlock::updateTerminator deletes branches and inserts new ones while LiveVariables keeps a list of pointers to instructions that kill virtual registers. That list wasn't properly updated in MBB::SplitCriticalEdge. llvm-svn: 132298
* When generating against the Win64 EH scheme, set the handler to the GCC-specificCharles Davis2011-05-291-0/+7
| | | | | | | | | | | | | | | | handler. At this moment, only GCC-style exceptions are supported. Other kinds of exceptions, including "traditional" SEH and Microsoft Visual C++ exceptions, need more work--and an compiler exception model that isn't specific to GCC-style exceptions! In particular, I imagine that it would be possible to mix "traditional" SEH with GCC-style EH or Microsoft C++ EH. Currently LLVM has no way (beyond some target-specific defaults and whole-module compiler switches) of knowing which scheme to use when. llvm-svn: 132283
* Refactor the type legalizer. Switch TargetLowering to a new enum - ↵Nadav Rotem2011-05-282-33/+26
| | | | | | | | | | | LegalizeTypeAction. This patch does not change the behavior of the type legalizer. The codegen produces the same code. This infrastructural change is needed in order to enable complex decisions for vector types (needed by the vector-select patch). llvm-svn: 132263
* Erase instructions _after_ checking their type.Benjamin Kramer2011-05-281-3/+4
| | | | llvm-svn: 132256
* Implement and document the llvm.eh.resume intrinsic, which isJohn McCall2011-05-281-25/+42
| | | | | | | | | | | | | | | | | transformed by the inliner into a branch to the enclosing landing pad (when inlined through an invoke). If not so optimized, it is lowered DWARF EH preparation into a call to _Unwind_Resume (or _Unwind_SjLj_Resume as appropriate). Its chief advantage is that it takes both the exception value and the selector value as arguments, meaning that there is zero effort in recovering these; however, the frontend is required to pass these down, which is not actually particularly difficult. Also document the behavior of landing pads a bit better, and make it clearer that it's okay that personality functions don't always land at landing pads. This is just a fact of life. Don't write optimizations that rely on pushing things over an unwind edge. llvm-svn: 132253
* When generating code for Win64 EH, emit StartProc and EndProc directives.Charles Davis2011-05-282-0/+31
| | | | llvm-svn: 132250
* Create two BlockInfo entries when a live range is discontinuous through a block.Jakob Stoklund Olesen2011-05-283-55/+71
| | | | | | | | | | | | | | | | | | | Delete the Kill and Def markers in BlockInfo. They are no longer necessary when BlockInfo describes a continuous live range. This only affects the relatively rare kind of basic block where a live range looks like this: |---x o---| Now live range splitting can pretend that it is looking at two blocks: |---x o---| This allows the code to be simplified a bit. llvm-svn: 132245
* Add SplitAnalysis::getNumLiveBlocks().Jakob Stoklund Olesen2011-05-283-5/+12
| | | | | | | | | | | It is important that this function returns the same number of live blocks as countLiveBlocks(CurLI) because live range splitting uses the number of live blocks to ensure it is making progress. This is in preparation of supporting duplicate UseBlock entries for basic blocks that have a virtual register live-in and live-out, but not live-though. llvm-svn: 132244
* Select DW_AT_const_value size based on global variable size.Devang Patel2011-05-281-5/+13
| | | | llvm-svn: 132239
* Fix the root cause of the bootstrap failure:Rafael Espindola2011-05-281-1/+1
| | | | | | | | There was no way to check if a given register/mode pair was valid. We now return an error code (-2) instead of asserting. If anyone thinks that an assert at this point is really needed, we can autogen a hasValidDwarfRegNum instead. llvm-svn: 132236
* Stub out support for Win64-style exceptions. Note that this is merely usingCharles Davis2011-05-275-0/+99
| | | | | | | the Win64 EH mechanism to implement GCC-style exceptions. LLVM supports hardly anything else at this point! llvm-svn: 132234
* Fix a regression I recently introduced by removing DwarfRegNum ofRafael Espindola2011-05-271-1/+18
| | | | | | | | | | subregisters: When a value is in a subregister, at least report the location as being the superregister. We should extend the .td files to encode the bit range so that we can produce a DW_OP_bit_piece. llvm-svn: 132224
* Make size computation less brittle.Rafael Espindola2011-05-272-30/+6
| | | | llvm-svn: 132222
* Add the suffix to the Win64 EH data sections' names if given. Add a test forCharles Davis2011-05-271-0/+22
| | | | | | this. XFAIL'd, because the COFF AsmParser can't handle .section yet. llvm-svn: 132220
* Refactor getActionType and getTypeToTransformTo ; place all of the 'decision'Nadav Rotem2011-05-273-4/+4
| | | | | | code in one place. Re-apply 131534 and fix the multi-step promotion of integers. llvm-svn: 132217
* Keep this simple. Use DIType to get signness and size of a type. Based on ↵Devang Patel2011-05-271-18/+13
| | | | | | size, select appropraite form. llvm-svn: 132206
* Handle signed types gracefully.Devang Patel2011-05-271-9/+21
| | | | | | This fixes regressions reported by buildbots as a fallout of r132193. llvm-svn: 132197
* Select DW_AT_const_value size based on variable size.Devang Patel2011-05-273-5/+15
| | | | llvm-svn: 132193
* Fix PR10029 - VerifyCoalescing failure on patterns_dfa.c of 445.gobmk.Cameron Zwarich2011-05-271-2/+5
| | | | llvm-svn: 132181
* Add comment.Devang Patel2011-05-261-0/+3
| | | | llvm-svn: 132149
* During branch folding avoid inserting redundant DBG_VALUE machine instructions.Devang Patel2011-05-261-0/+13
| | | | llvm-svn: 132148
* Revert r132111. I built Release (without Asserts), so I didn't know about theCharles Davis2011-05-261-2/+0
| | | | | | assert that prevented setting alignment on section creation. llvm-svn: 132113
* Align Win64 EH Table sections to 4 bytes.Charles Davis2011-05-261-0/+2
| | | | llvm-svn: 132111
* Reverting 132105: it broke some LLVM-GCC DejaGNU tests.Stuart Hastings2011-05-261-7/+2
| | | | llvm-svn: 132108
* Correctly handle a one-word struct passed byval on x86_64.Stuart Hastings2011-05-261-2/+7
| | | | | | rdar://problem/6920088 llvm-svn: 132105
* Add a RAGreedy::canEvict function.Jakob Stoklund Olesen2011-05-251-4/+62
| | | | | | | | | | | | This doesn't change functionality (much), but it allows for a more fine-grained eviction policy. The current policy only compares spill weights, and that is not always the best thing to do. Spill weights are designed to serve linear scan, and they don't consider live range splitting. Add a mechanism so canEvict() can request that a live range be evicted and split/spilled. This is to avoid infinite eviction loops. llvm-svn: 132101
* Rewrite fast-isel integer cast handling to handle more cases, and to be ↵Eli Friedman2011-05-251-26/+6
| | | | | | | | | | simpler and more consistent. The practical effects here are that x86-64 fast-isel can now handle trunc from i8 to i1, and ARM fast-isel can handle many more constructs involving integers narrower than 32 bits (including loads, stores, and many integer casts). rdar://9437928 . llvm-svn: 132099
* Remove unused statistical counter.Devang Patel2011-05-251-57/+0
| | | | llvm-svn: 132087
* Replace the -unwind-tables option with a per function flag. This is moreRafael Espindola2011-05-252-9/+5
| | | | | | | LTO friendly as we can now correctly merge files compiled with or without -fasynchronous-unwind-tables. llvm-svn: 132033
* Remove dead code.Devang Patel2011-05-241-10/+0
| | | | llvm-svn: 131974
* Explain FIXME.Rafael Espindola2011-05-241-4/+5
| | | | llvm-svn: 131952
* Fix the defaults for .eh_frame. We were marking it as writable.Rafael Espindola2011-05-241-2/+2
| | | | llvm-svn: 131951
* - Teach SelectionDAG::isKnownNeverZero to return true (op x, c) when c isEvan Cheng2011-05-241-5/+13
| | | | | | | | | | non-zero. - Teach X86 cmov optimization to eliminate the cmov from ctlz, cttz extension when the source of X86ISD::BSR / X86ISD::BSF is proven to be non-zero. rdar://9490949 llvm-svn: 131948
* Fix debug info for blocks' variable.Devang Patel2011-05-241-6/+21
| | | | llvm-svn: 131940
* Remove unnecessary comment.Devang Patel2011-05-231-1/+0
| | | | llvm-svn: 131936
* Revert 121907 (it causes llc crash) and apply original patch from PR9817.Devang Patel2011-05-232-3/+3
| | | | llvm-svn: 131926
* Preserve debug info during iSel by keeping DanglingDebugInfoMap live until ↵Devang Patel2011-05-233-1/+19
| | | | | | | | end of function. Patch by Micah Villmow llvm-svn: 131908
* While replacing all uses of a SDValue with another value, do not forget to ↵Devang Patel2011-05-231-0/+3
| | | | | | transfer SDDbgValue. llvm-svn: 131907
OpenPOWER on IntegriCloud