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10564 Commits

Author SHA1 Message Date
Jim Grosbach
9b041c92ef Anti-dependency breaking needs to be careful not to use reserved regs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112832 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 17:12:55 +00:00
Devang Patel
b1fcfbe89b Fix .debug_range for linux. Patch by Krister Wombell. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112830 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 16:43:44 +00:00
Lang Hames
33198391d6 Added support for register allocators to record which intervals are spill 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
 2010-09-02 08:27:00 +00:00
Chandler Carruth
4315093eb7 Silence an ambiguous else warning from GCC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112809 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 07:08:05 +00:00
Lang Hames
7642572e6d Added counters for PBQP reduction rules. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112807 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 05:37:52 +00:00
Jim Grosbach
d273a003b6 Add a bit of debug output for register scavenging 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112787 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-02 00:51:37 +00:00
Jim Grosbach
188da252ab Tweak to ignoring reserved regs. The allocator was occasionally still looking 
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
 2010-09-01 22:48:34 +00:00
Jakob Stoklund Olesen
0077114efc Teach RemoveCopyByCommutingDef to check all aliases, not just subregisters. 
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
 2010-09-01 22:15:35 +00:00
Jim Grosbach
662fb77687 tidy up trailing whitespace and an 80 column violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112746 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-01 21:48:06 +00:00
Jim Grosbach
5a4cbea312 cleanup per feedback. use a helper function for getting the first non-reserved 
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
 2010-09-01 21:34:41 +00:00
Jim Grosbach
269354e570 The register allocator shouldn't consider allocating reserved registers. PBQP version. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-01 21:23:03 +00:00
Jim Grosbach
067a648599 The register allocator shouldn't consider allocating reserved registers. 
r112728 did this for fast regalloc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112741 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-01 21:04:27 +00:00
Jim Grosbach
1f758831cb The register allocator shouldn't consider allocating reserved registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112728 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-01 19:28:41 +00:00
Jim Grosbach
07cb689d62 tidy up a few 80-column and trailing whitespace bits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112726 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-01 19:16:29 +00:00
Eric Christopher
adc581f5cb Speculatively revert 112699 and 112702, they seem to be causing 
self host errors on clang-x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112719 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-01 17:29:10 +00:00
Duncan Sands
fb4e8ab200 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@112702 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-01 14:07:47 +00:00
Devang Patel
ae84d5b9ba Use absolute label for DW_AT_stmt_list if a target does not prefer offset here. 
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
 2010-08-31 23:50:19 +00:00
Devang Patel
0b48eade42 Reapply r112623. Included additional check for unused byval argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112659 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 22:22:42 +00:00
Jakob Stoklund Olesen
f14a648d80 Track liveness of unallocatable, unreserved registers in machine DCE. 
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
 2010-08-31 21:51:05 +00:00
Jakob Stoklund Olesen
9d4b51b696 Ignore unallocatable registers in RegAllocFast. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112632 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 19:54:25 +00:00
Devang Patel
81b79b5fa8 Revert r112623. It is causing self host build failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112631 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 19:41:03 +00:00
Devang Patel
8480c2e314 Remember byval argument's frame index during argument lowering and use this 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
 2010-08-31 18:50:09 +00:00
Jim Grosbach
864d22ea72 Improve virtual frame base register allocation heuristics. 
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
 2010-08-31 17:58:19 +00:00
Duncan Sands
22efc18f12 Stop using the dom frontier in DwarfEHPrepare by not promoting alloca's 
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
 2010-08-31 09:05:06 +00:00
Devang Patel
34ca5ed797 Offset is not always unsigned number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112584 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 06:12:08 +00:00
Devang Patel
9e3bd2c476 Simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112583 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 06:11:28 +00:00
Bruno Cardoso Lopes
2e46e78c53 zap unused method. x86 is the only user and already has a more powerfull version 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112571 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-31 02:36:20 +00:00
Jakob Stoklund Olesen
e49e6a852b Add experimental -disable-physical-join command line option. 
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
 2010-08-31 01:27:49 +00:00
Chris Lattner
1875ce4ad9 two changes: 
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
 2010-08-30 18:12:35 +00:00
Bill Wendling
c040719a15 Revert r112461. It was failing on PPC... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112463 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-30 04:36:50 +00:00
Bill Wendling
25b141912c When adding a register, we should mark it as "def" if it can optionally define 
said (physical) register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112461 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-30 01:36:05 +00:00
Chris Lattner
a11ce95cfc revert 112457, it looks like it broke selfhost. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112459 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 22:28:18 +00:00
Chris Lattner
4455608818 rewrite DwarfEHPrepare to use SSAUpdater to promote its allocas 
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
 2010-08-29 19:54:28 +00:00
Chris Lattner
c34c2200a8 inline function into its only caller. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-29 19:28:28 +00:00
Chris Lattner
61c70e98ac remove unions from LLVM IR. They are severely buggy and not 
being actively maintained, improved, or extended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112356 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-28 04:09:24 +00:00
Chris Lattner
5f8a87dd76 remove dead proto 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112354 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-28 03:45:03 +00:00
Dan Gohman
badcda4afa Completely disable tail calls when fast-isel is enabled, as fast-isel 
doesn't currently support dealing with this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112341 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-28 00:51:03 +00:00
Dan Gohman
7258df71fa Trim a #include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112340 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-28 00:49:13 +00:00
Devang Patel
0991dfbbe0 Simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112305 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 22:25:51 +00:00
Bill Wendling
69c5eb59f5 Remove now unneeded command line flag that enables 'optimize compares.' 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112287 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-27 20:39:09 +00:00
Devang Patel
4cf81c47fe Revert r112213. It is not needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112242 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 23:35:15 +00:00
Jim Grosbach
fcb4a8ead3 Simplify eliminateFrameIndex() interface back down now that PEI doesn't need 
to try to re-use scavenged frame index reference registers. rdar://8277890

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112241 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 23:32:16 +00:00
Devang Patel
6cd467bd0e If node is not available then use FuncInfo.ValueMap to emit debug info for byval parameter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112238 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 22:53:27 +00:00
Jim Grosbach
700f5df518 Remove the now obsolete frame index virtual re-use algorithm from PEI. Pre-RA 
virtual base registers handle this function, and more. A bit more cleanup
to do on the interface to eliminateFrameIndex() after this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112237 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 22:42:12 +00:00
Devang Patel
e130d78ee1 Speculatively revert r112207. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112216 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 20:33:42 +00:00
Devang Patel
8f09beacb1 80 col. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112215 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 20:32:32 +00:00
Devang Patel
f2ec7ae279 Update DanglingDebugInfo so that it can be used to track llvm.dbg.declare also. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112213 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 20:06:46 +00:00
Devang Patel
9d0796a0e0 Donot forget to resolve dangling debug info in a case where virtual register, used for a value, is initialized after a dbg intrinsic is seen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112207 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 18:36:14 +00:00
Chris Lattner
341fa09a3c Add a hackaround for PR7993 which is causing failures on x86 builders that lack sse2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112175 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 06:57:07 +00:00
Chris Lattner
8306968c14 implement SplitVecOp_CONCAT_VECTORS, fixing the included testcase with SSE1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112171 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-26 05:51:22 +00:00