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2010-09-17Approved by EvanBill Wendling
$ svn merge -c 114220 https://llvm.org/svn/llvm-project/llvm/trunk --- Merging r114220 into '.': U lib/CodeGen/MachineCSE.cpp $ svn merge -c 114222 https://llvm.org/svn/llvm-project/llvm/trunk --- Merging r114222 into '.': G lib/CodeGen/MachineCSE.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_28@114224 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-15$ svn merge -c 113848 https://llvm.org/svn/llvm-project/llvm/trunkBill Wendling
--- Merging r113848 into '.': U lib/CodeGen/PeepholeOptimizer.cpp must not peephole away side effects git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_28@113913 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-09Approved by Evan:Bill Wendling
$ svn merge -c 113299 https://llvm.org/svn/llvm-project/llvm/trunk --- Merging r113299 into '.': U lib/CodeGen/VirtRegRewriter.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_28@113531 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03previous patch was a little too tricky for its own good. Don't try toJim Grosbach
overload UserInInstr. Explicitly check Allocatable. The early exit in the condition will mean the performance impact of the extra test should be minimal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113016 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Add a missing check when legalizing a vector extending load. This doesn'tBob Wilson
solve the root problem, but it corrects the bug in the code I added to support legalizing in the case where the non-extended type is also legal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112997 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03VirtRegRewriter checks for early clobbers before it reuses an available stackJakob Stoklund Olesen
slot. Teach it to also check for early clobbered aliases, and early clobber operands following the current operand. This fixes the miscompilation in PR8044 where EC registers eax and ecx were being used for inputs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112988 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-03Reapply commit 112702 which was speculatively reverted by echristo.Duncan Sands
Original commit message: Use the SSAUpdator to turn calls to eh.exception that are not in a landing pad into uses of registers rather than loads from a stack slot. Doesn't touch the 'orrible hack code - Bill needs to persuade me harder :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112952 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02There is no need to use .set here.Devang Patel
Thanks Chris! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112900 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Detect undef value early and save unnecessary NodeMap query.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112864 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Don't narrow the load and store in a load+twiddle+store sequence unlessDan Gohman
there are clearly no stores between the load and the store. This fixes this miscompile reported as PR7833. This breaks the test/CodeGen/X86/narrow_op-2.ll optimization, which is safe, but awkward to prove safe. Move it to X86's README.txt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112861 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Tidy up.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112858 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02The scavenger should just use getAllocatableSet() rather than reinventing itJim Grosbach
locally. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112845 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Anti-dependency breaking needs to be careful not to use reserved regsJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112832 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Fix .debug_range for linux. Patch by Krister Wombell.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112830 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Added support for register allocators to record which intervals are spill ↵Lang Hames
intervals, and where the uses and defs of the original intervals were in the original code. Spill intervals can be hidden using the "-rmf-intervals=virt-nospills*" option. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112811 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Silence an ambiguous else warning from GCC.Chandler Carruth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112809 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Added counters for PBQP reduction rules.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112807 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-02Add a bit of debug output for register scavengingJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112787 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01Tweak to ignoring reserved regs. The allocator was occasionally still lookingJim Grosbach
at them since they'd end up in the register weights list. Tell it to stop doing that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112756 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01Teach RemoveCopyByCommutingDef to check all aliases, not just subregisters.Jakob Stoklund Olesen
This caused a miscompilation in WebKit where %RAX had conflicting defs when RemoveCopyByCommutingDef was commuting a %EAX use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112751 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01tidy up trailing whitespace and an 80 column violation.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112746 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01cleanup per feedback. use a helper function for getting the first non-reservedJim Grosbach
physical register in a register class. Make sure to assert if the register class is empty. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112743 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01The register allocator shouldn't consider allocating reserved registers. ↵Jim Grosbach
PBQP version. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112742 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01The register allocator shouldn't consider allocating reserved registers.Jim Grosbach
r112728 did this for fast regalloc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112741 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01The register allocator shouldn't consider allocating reserved registers.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112728 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01tidy up a few 80-column and trailing whitespace bits.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01Speculatively revert 112699 and 112702, they seem to be causingEric Christopher
self host errors on clang-x86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112719 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01Use the SSAUpdator to turn calls to eh.exception that are not in aDuncan Sands
landing pad into uses of registers rather than loads from a stack slot. Doesn't touch the 'orrible hack code - Bill needs to persuade me harder :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112702 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Use absolute label for DW_AT_stmt_list if a target does not prefer offset here.Devang Patel
This patch was developed on top of original patch by Artur Pietrek. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112678 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Reapply r112623. Included additional check for unused byval argument.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112659 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Track liveness of unallocatable, unreserved registers in machine DCE.Jakob Stoklund Olesen
Reserved registers are unpredictable, and are treated as always live by machine DCE. Allocatable registers are never reserved, and can be used for virtual registers. Unreserved, unallocatable registers can not be used for virtual registers, but otherwise behave like a normal allocatable register. Most targets only have the flag register in this set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112649 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Ignore unallocatable registers in RegAllocFast.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112632 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Revert r112623. It is causing self host build failures.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112631 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Remember byval argument's frame index during argument lowering and use this ↵Devang Patel
info to emit debug info. Fixes Radar 8367011. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112623 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Improve virtual frame base register allocation heuristics.Jim Grosbach
1. Allocate them in the entry block of the function to enable function-wide re-use. The instructions to create them should be re-materializable, so there shouldn't be additional cost compared to creating them local to the basic blocks where they are used. 2. Collect all of the frame index references for the function and sort them by the local offset referenced. Iterate over the sorted list to allocate the virtual base registers. This enables creation of base registers optimized for positive-offset access of frame references. (Note: This may be appropriate to later be a target hook to do the sorting in a target appropriate manner. For now it's done here for simplicity.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112609 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Stop using the dom frontier in DwarfEHPrepare by not promoting alloca'sDuncan Sands
any more. I plan to reimplement alloca promotion using SSAUpdater later. It looks like Bill's URoR logic really always needs domtree, so the pass now always asks for domtree info. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112597 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Offset is not always unsigned number.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112584 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Simplify.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112583 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31zap unused method. x86 is the only user and already has a more powerfull versionBruno Cardoso Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112571 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Add experimental -disable-physical-join command line option.Jakob Stoklund Olesen
Eventually, we want to disable physreg coalescing completely, and let the register allocator do its job using hints. This option makes it possible to measure the impact of disabling physreg coalescing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112567 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-30two changes:Chris Lattner
1) nuke ConstDataCoalSection, which is dead. 2) revise my previous patch for rdar://8018335, which was completely wrong. Specifically, it doesn't make sense to mark __TEXT,__const_coal as PURE_INSTRUCTIONS, because it is for readonly data. templates (it turns out) go to const_coal_nt. The real fix for rdar://8018335 was to give ConstTextCoalSection a section kind of ReadOnly instead of Text. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112496 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-30Revert r112461. It was failing on PPC...Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112463 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-30When adding a register, we should mark it as "def" if it can optionally defineBill Wendling
said (physical) register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112461 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-29revert 112457, it looks like it broke selfhost.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112459 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-29rewrite DwarfEHPrepare to use SSAUpdater to promote its allocasChris Lattner
instead of PromoteMemToReg. This allows it to stop using DF and DT, eliminating a computation of DT and DF from clang -O3. Clang is now down to 2 runs of DomFrontier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112457 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-29inline function into its only caller.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112455 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-28remove unions from LLVM IR. They are severely buggy and notChris Lattner
being actively maintained, improved, or extended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112356 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-28remove dead protoChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112354 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-28Completely disable tail calls when fast-isel is enabled, as fast-iselDan Gohman
doesn't currently support dealing with this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112341 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-28Trim a #include.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112340 91177308-0d34-0410-b5e6-96231b3b80d8
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