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2011-05-28Refactor the type legalizer. Switch TargetLowering to a new enum - ↵Nadav Rotem
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). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132263 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-28Erase instructions _after_ checking their type.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132256 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-28Implement and document the llvm.eh.resume intrinsic, which isJohn McCall
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132253 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-28When generating code for Win64 EH, emit StartProc and EndProc directives.Charles Davis
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132250 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-28Create two BlockInfo entries when a live range is discontinuous through a block.Jakob Stoklund Olesen
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132245 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-28Add SplitAnalysis::getNumLiveBlocks().Jakob Stoklund Olesen
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132244 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-28Select DW_AT_const_value size based on global variable size.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132239 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-28Fix the root cause of the bootstrap failure:Rafael Espindola
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132236 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Stub out support for Win64-style exceptions. Note that this is merely usingCharles Davis
the Win64 EH mechanism to implement GCC-style exceptions. LLVM supports hardly anything else at this point! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132234 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Fix a regression I recently introduced by removing DwarfRegNum ofRafael Espindola
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132224 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Make size computation less brittle.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132222 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Add the suffix to the Win64 EH data sections' names if given. Add a test forCharles Davis
this. XFAIL'd, because the COFF AsmParser can't handle .section yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132220 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Refactor getActionType and getTypeToTransformTo ; place all of the 'decision'Nadav Rotem
code in one place. Re-apply 131534 and fix the multi-step promotion of integers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132217 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Keep this simple. Use DIType to get signness and size of a type. Based on ↵Devang Patel
size, select appropraite form. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132206 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Handle signed types gracefully.Devang Patel
This fixes regressions reported by buildbots as a fallout of r132193. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132197 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Select DW_AT_const_value size based on variable size.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132193 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-27Fix PR10029 - VerifyCoalescing failure on patterns_dfa.c of 445.gobmk.Cameron Zwarich
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132181 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-26Add comment.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132149 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-26During branch folding avoid inserting redundant DBG_VALUE machine instructions.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132148 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-26Revert r132111. I built Release (without Asserts), so I didn't know about theCharles Davis
assert that prevented setting alignment on section creation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132113 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-26Align Win64 EH Table sections to 4 bytes.Charles Davis
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132111 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-26Reverting 132105: it broke some LLVM-GCC DejaGNU tests.Stuart Hastings
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132108 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-26Correctly handle a one-word struct passed byval on x86_64.Stuart Hastings
rdar://problem/6920088 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132105 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-25Add a RAGreedy::canEvict function.Jakob Stoklund Olesen
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132101 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-25Rewrite fast-isel integer cast handling to handle more cases, and to be ↵Eli Friedman
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 . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132099 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-25Remove unused statistical counter.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132087 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-25Replace the -unwind-tables option with a per function flag. This is moreRafael Espindola
LTO friendly as we can now correctly merge files compiled with or without -fasynchronous-unwind-tables. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132033 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-24Remove dead code.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131974 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-24Explain FIXME.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131952 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-24Fix the defaults for .eh_frame. We were marking it as writable.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131951 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-24- Teach SelectionDAG::isKnownNeverZero to return true (op x, c) when c isEvan Cheng
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131948 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-24Fix debug info for blocks' variable.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131940 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-23Remove unnecessary comment.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131936 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-23Revert 121907 (it causes llc crash) and apply original patch from PR9817.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131926 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-23Preserve debug info during iSel by keeping DanglingDebugInfoMap live until ↵Devang Patel
end of function. Patch by Micah Villmow git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131908 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-23While replacing all uses of a SDValue with another value, do not forget to ↵Devang Patel
transfer SDDbgValue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131907 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-22Eliminate some temporary variables, and don't call getByValTypeAlignmentChris Lattner
when we're just going to throw the result away. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131880 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-22eliminate dependence on StandardPasses.h. The code generator's pass pipelineChris Lattner
should eventually convert to PMBuilder, but I don't plan to do this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131819 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-21Implement mulo x, 2 -> addo x, x in DAGCombiner.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131800 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20Fix PR9962 by properly constraining register classes in ↵Cameron Zwarich
RemoveCopyByCommutingDef(). This actually fixes most of the VerifyCoalescing failures in test-suite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131768 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20Fix typo. When will I learn?Charles Davis
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131765 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20Add .pdata and .xdata sections to the COFF TLOF implementation.Charles Davis
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131763 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20No reason not to allow defining the CFA as a reg w/ offset zero.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131760 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20Fix typo.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131757 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20Add support for frame info use of the .cfi_def_cfa directive.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131756 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-20Fix PR9960 by teaching SimpleRegisterCoalescing::AdjustCopiesBackFrom() to ↵Cameron Zwarich
preserve the phikill flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131717 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19Fix PR9955 by only attaching load memory operands to load instructions andCameron Zwarich
similarly for stores. Now "make check" passes with the MachineVerifier forced on with the VerifyCoalescing option! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131705 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19Update some currently-disabled code, preparing for eventual use.Stuart Hastings
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131663 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-19Revert r128961 because it didn't include a test and causes the verifier to failCameron Zwarich
on CodeGen/X86/2007-05-07-InvokeSRet.ll. There is probably a bug here that was fixed by r128961, but since there is no test or reference to a source file I have to revert it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131618 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-18Revert commit 131534 since it seems to have broken several buildbots.Duncan Sands
Original log entry: Refactor getActionType and getTypeToTransformTo ; place all of the 'decision' code in one place. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131536 91177308-0d34-0410-b5e6-96231b3b80d8
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