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Author SHA1 Message Date
Evan Cheng
d923fc621f Move getInstrOperandRegClass from the scheduler to TargetInstrInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70950 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-05 00:30:09 +00:00
Evan Cheng
c3806ea3bc Do forward and backward substitution to eliminate loads and stores when possible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70937 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 23:13:13 +00:00
Evan Cheng
712e80e188 Default llc / lli optimization to "Default", which corresponds to -O1 / -O2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70934 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 23:05:19 +00:00
Evan Cheng
b0030ddca4 - Avoid the longer SIB encoding on x86_64 when it's not needed. 
- Synchronize instruction length computation code in X86InstrInfo with code in X86CodeEmitter.cpp
Patch by Zoltan Varga.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70929 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 22:49:16 +00:00
Dan Gohman
35738ac150 Re-apply 70645, converting ScalarEvolution to use 
CallbackVH, with fixes. allUsesReplacedWith need to
walk the def-use chains and invalidate all users of a
value that is replaced. SCEVs of users need to be
recalcualted even if the new value is equivalent. Also,
make forgetLoopPHIs walk def-use chains, since any
SCEV that depends on a PHI should be recalculated when
more information about that PHI becomes available.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70927 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 22:30:44 +00:00
Dan Gohman
bf2176a000 Fix an 80-column violation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70925 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 22:23:18 +00:00
Dan Gohman
92fa56eb58 Fix doxygen comment syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70924 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 22:20:30 +00:00
Chris Lattner
af29a5235d Make DBG_STOPPOINT nodes, and therefore DBG_LABEL labels, get a DebugLoc, so that it 
shows up in -print-machineinstrs.  This doesn't appear to affect anything, but it was
weird for some DBG_LABELs to have DebugLocs but not all of them.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70921 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 22:10:05 +00:00
Dan Gohman
622ed671b9 Constify a bunch of SCEV-using code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70919 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 22:02:23 +00:00
Dan Gohman
7d04e4a7c0 X86FastISel doesn't support the -tailcallopt ABI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70902 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 19:50:33 +00:00
Argyrios Kyrtzidis
28f1412c97 Restore a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70900 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 19:23:45 +00:00
Anton Korobeynikov
cffb5284f1 Fix code emission for conditional branches. 
Patch by Collin Winter!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70898 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 19:10:38 +00:00
Mike Stump
fe095f39e7 Restore minor deletion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70892 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-04 18:40:41 +00:00
Evan Cheng
04fa35ab13 Typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70792 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 19:10:11 +00:00
Chris Lattner
bdd73290a5 Remove obsolete wording, the only exception a readnone function can throw 
is the empty set. :)  Thanks to Fritz for pointing this out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70790 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 19:06:00 +00:00
Chris Lattner
7a57c5bb08 be very explicit that readnone/readonly functions can't 
throw exceptions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70788 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 18:49:37 +00:00
Evan Cheng
c781a243a3 In some rare cases, the register allocator can spill registers but end up not utilizing registers at all. The fundamental problem is linearscan's backtracking can end up freeing more than one allocated registers. However, reloads and restores might be folded into uses / defs and freed registers might not be used at all. 
VirtRegMap keeps track of allocations so it knows what's not used. As a horrible hack, the stack coloring can color spill slots with *free* registers. That is, it replace reload and spills with copies from and to the free register. It unfold instructions that load and store the spill slot and replace them with register using variants.

Not yet enabled. This is part 1. More coming.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70787 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 18:32:42 +00:00
Anton Korobeynikov
87e3caf819 Handle implicit zext in a better way. Shamelessly stolen from x86 backend. 
Thanks for Dan Gohman for suggestion!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70782 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 15:50:18 +00:00
Anton Korobeynikov
2c4718bdd9 Regenerate 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70772 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:42:23 +00:00
Anton Korobeynikov
9fe9c8ec7d Fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70770 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:19:57 +00:00
Anton Korobeynikov
60871cb40c Update due to mainline API change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70769 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:19:42 +00:00
Anton Korobeynikov
7594884648 Add TODO list :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70768 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:19:24 +00:00
Anton Korobeynikov
1bb8cd723d Make handling of conditional stuff much more straightforward 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70767 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:19:09 +00:00
Anton Korobeynikov
1fcfb6b6d2 Temporary disable imm patterns for cmp. Actually, all cmp-related stuff (select_cc, setcc, br_cc). needs to be rethought 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70766 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:18:50 +00:00
Anton Korobeynikov
f2f540261b Expand divisions into libcalls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70765 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:18:33 +00:00
Anton Korobeynikov
813090cf89 Properly handle sdiv / udiv / srem / urem libcalls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70764 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:18:16 +00:00
Anton Korobeynikov
b78e214274 Custom lower SIGN_EXTEND 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70763 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:17:49 +00:00
Anton Korobeynikov
1394db0eeb Some eye-candy 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70762 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:17:31 +00:00
Anton Korobeynikov
6130fc8ea3 Print function header / footer 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70761 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:17:11 +00:00
Anton Korobeynikov
d9e89f6ea4 Fix printing: je => jeq 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70760 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:16:54 +00:00
Anton Korobeynikov
bf8ef3f29d Add 8bit shifts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70759 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:16:37 +00:00
Anton Korobeynikov
e699d0f549 Handle logical shift right (at least I hope so :) ) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70758 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:16:17 +00:00
Anton Korobeynikov
e375a7c768 Handle anyext 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70757 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:15:57 +00:00
Anton Korobeynikov
0dbf292f68 Expand all sorts of indirect branches 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70755 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:15:40 +00:00
Anton Korobeynikov
8644af3690 Add InsertBranch() hook for tail mergeing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70754 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:15:22 +00:00
Anton Korobeynikov
49ebc22784 Implement bswap 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70753 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:15:03 +00:00
Anton Korobeynikov
5d59f68ade Properly handle ExternalSymbol's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70752 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:14:46 +00:00
Anton Korobeynikov
8725bd22bf Expand muls (all mulls!) to libcalls for now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70751 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:14:25 +00:00
Anton Korobeynikov
c31642f7af Proper name 16 bit libcalls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70750 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:14:08 +00:00
Anton Korobeynikov
2f25c2c63f Add libcall expansion for 16 and 128 bit muls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70749 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:13:51 +00:00
Anton Korobeynikov
b8f03c9578 Provide addc and subc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70748 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:13:34 +00:00
Anton Korobeynikov
ea54c9846b Add left shift 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70747 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:13:17 +00:00
Anton Korobeynikov
824d8ddae8 Add direct branch 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70746 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:12:58 +00:00
Anton Korobeynikov
0af5af823b It's error-prone to maintain two separate variants of asmprinting stuff, one of which is even used. Drop second (aka 'intel') variant of operands. It can be added later, if needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70745 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:12:37 +00:00
Anton Korobeynikov
8b528e52ee Lower select with custom inserted and make condjumps generic 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70744 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:12:23 +00:00
Anton Korobeynikov
ed1a51af37 Add first draft for conditions, conditional branches, etc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70743 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:12:06 +00:00
Anton Korobeynikov
6e4f62790b Hanle i8 returns 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70742 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:11:48 +00:00
Anton Korobeynikov
c08163e72d Small tweaking 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70741 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:11:35 +00:00
Anton Korobeynikov
ce45d30fa1 Add prologue/epilogue emission. Fix frame pointer handling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70740 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:11:20 +00:00
Anton Korobeynikov
d5047cb9f7 Add code for save/restore of callee-saved registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70739 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:11:04 +00:00