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27114 Commits

Author SHA1 Message Date
Chris Lattner 28f17f45be Use branch reversal to do stuff like this: 
call L_strcmp$stub
        testl %eax, %eax
-       jne LBB26_208   #cond_true6020
-       jmp LBB26_227   #bb7119
+       je LBB26_227    #bb7119
 LBB26_208:     #cond_true6020
        movl $l31_str14, 4(%esp)

        testl %eax, %eax
-       jne LBB26_704   #cond_true13042
-       jmp LBB26_713   #bb13151
+       je LBB26_713    #bb13151
 LBB26_704:     #cond_true13042
        movl $_str52, 4(%esp)

        cmpl 76(%ecx), %eax
-       jge LBB26_1628  #cond_false63.i.i
-       jmp LBB26_1769  #_Z8makeGridP13mrSurfaceListidiidd.exit.i
+       jl LBB26_1769   #_Z8makeGridP13mrSurfaceListidiidd.exit.i
 LBB26_1628:    #cond_false63.i.i
        movl $0, 48964(%esp)

llvm-svn: 31100
 2006-10-21 05:54:00 +00:00
Chris Lattner 3a897f31fa Implement support for branch condition reversal. 
llvm-svn: 31099
 2006-10-21 05:52:40 +00:00
Chris Lattner 3ca52185af Transform code like: 
jle FOO
  jmp BAR
BAR:

into:

  jle FOO
BAR:

... whoa!

llvm-svn: 31098
 2006-10-21 05:43:30 +00:00
Chris Lattner d881660366 Simplify code, no functionality change 
llvm-svn: 31097
 2006-10-21 05:42:09 +00:00
Chris Lattner 94e04442eb implement support for inserting a cond branch 
llvm-svn: 31096
 2006-10-21 05:36:13 +00:00
Chris Lattner 6fca75ec05 allow insertion of a conditional branch with fall-through 
llvm-svn: 31095
 2006-10-21 05:34:23 +00:00
Chris Lattner 4fe01c42ca Three changes: 
1. Remove a bunch of ifdef'd code.
2. When a block just contains an uncond branch, change all blocks branching
   to it to jump to the destination instead.
3. If branch analysis tells us some edges in the machinecfg are not actually
   possible, remove them.

#2 triggers a suprisingly large number of times.

llvm-svn: 31094
 2006-10-21 05:08:28 +00:00
Chris Lattner 20e75d4635 update assert message 
llvm-svn: 31093
 2006-10-21 04:42:29 +00:00
Chris Lattner 60c9d4dc76 Add an experimental cross-jumping implementation. 
This is currently disabled by default and limited in several ways, but does
have a positive effect.

llvm-svn: 31090
 2006-10-21 00:47:49 +00:00
Chris Lattner 96fd2b28f1 typo 
llvm-svn: 31089
 2006-10-20 22:44:45 +00:00
Chris Lattner 33f5af09e4 implement MachineOperand::isIdenticalTo 
llvm-svn: 31088
 2006-10-20 22:39:59 +00:00
Chris Lattner 0f4db78dfe add isIdenticalTo method to machineinstr/operand. 
llvm-svn: 31087
 2006-10-20 22:39:36 +00:00
Chris Lattner af1222c1a7 llvm-extract should remove module-level asm 
llvm-svn: 31086
 2006-10-20 21:35:41 +00:00
Chris Lattner 8366b874a9 bugfix 
llvm-svn: 31074
 2006-10-20 20:44:34 +00:00
Chris Lattner 319c86fd38 Fix an ugly problem in SCCP. This fixes Benchmarks/Misc-C++/mandel-text.cpp 
llvm-svn: 31073
 2006-10-20 20:19:08 +00:00
Chris Lattner 5dee3b2526 Fix miscompilation of MallocBench/espresso which code review pointed out 
but apparently didn't make it into the final patch.

llvm-svn: 31070
 2006-10-20 18:20:21 +00:00
Bill Wendling c5c11a8070 Changed the pattern matching so that it will hopefully work on Linux. 
llvm-svn: 31069
 2006-10-20 18:15:24 +00:00
Devang Patel 4f4d3ec985 Test case for 
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20061016/038780.html

llvm-svn: 31068
 2006-10-20 18:06:37 +00:00
Chris Lattner c5ab6ce613 Make flag and chain edges visually distinguishable from value edges in DOT 
output.

llvm-svn: 31067
 2006-10-20 18:06:09 +00:00
Chris Lattner 819cb9ad61 add method 
llvm-svn: 31066
 2006-10-20 18:00:03 +00:00
Chris Lattner c0fb567e23 Implement branch analysis/xform hooks required by the branch folding pass. 
llvm-svn: 31065
 2006-10-20 17:42:20 +00:00
Reid Spencer a91e4be84f Fix a comment to be accurate. 
llvm-svn: 31064
 2006-10-20 07:24:55 +00:00
Reid Spencer e0fc4dfc22 For PR950: 
This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.

llvm-svn: 31063
 2006-10-20 07:07:24 +00:00
Devang Patel 5d417e35bc While creating mask, use 1ULL instead of 1. 
llvm-svn: 31062
 2006-10-20 01:16:56 +00:00
Chris Lattner b8b11599dd Fix SimplifyCFG/2006-10-19-UncondDiv.ll by disabling a bad xform. 
llvm-svn: 31061
 2006-10-20 00:42:07 +00:00
Chris Lattner 51e9632ea5 new testcase for PR957 
llvm-svn: 31060
 2006-10-20 00:41:31 +00:00
Chris Lattner 23dd1f6325 add a method to determine whether evaluation of a constant can trap. 
llvm-svn: 31059
 2006-10-20 00:27:06 +00:00
Bill Wendling b5d19927c9 Testcase for P926 
llvm-svn: 31058
 2006-10-19 23:21:59 +00:00
Bill Wendling be96e1cd09 Partially in response to PR926: insert the newly created machine basic 
blocks into the basic block list when lowering the switch inst. into a
binary tree of if-then statements. This allows the "visitSwitchCase" func
to allow for fall-through behavior.

llvm-svn: 31057
 2006-10-19 21:46:38 +00:00
Devang Patel 5d6df959e3 It is OK to remove extra cast if operation is EQ/NE even though source 
and destination sign may not match but other conditions are met.

llvm-svn: 31056
 2006-10-19 20:59:13 +00:00
Devang Patel 88afd00d1d Typo Typo. 
llvm-svn: 31055
 2006-10-19 19:21:36 +00:00
Devang Patel 472530d9fc Typo. 
llvm-svn: 31054
 2006-10-19 19:05:38 +00:00
Devang Patel b42aef4925 Fix bug in PR454 resolution. Added new test case. 
This fixes llvmAsmParser.cpp miscompile by llvm on PowerPC Darwin.

llvm-svn: 31053
 2006-10-19 18:54:08 +00:00
Rafael Espindola 336d62e99a use Pat to implement extloadi8 and extloadi16 
llvm-svn: 31052
 2006-10-19 17:05:03 +00:00
Reid Spencer ebd21a425a 80 cols fix. 
llvm-svn: 31050
 2006-10-19 15:24:04 +00:00
Rafael Espindola f8274c0318 implement undef 
llvm-svn: 31049
 2006-10-19 13:45:00 +00:00
Rafael Espindola ea67b973c2 print common symbols 
llvm-svn: 31048
 2006-10-19 13:30:40 +00:00
Rafael Espindola ff62819e2f implement extloadi8 and extloadi16 
llvm-svn: 31047
 2006-10-19 12:45:04 +00:00
Rafael Espindola 3c563c5072 expand SIGN_EXTEND_INREG 
llvm-svn: 31046
 2006-10-19 12:06:50 +00:00
Rafael Espindola b260306625 expand brind so that we don't have to implement jump tables right now 
llvm-svn: 31045
 2006-10-19 10:56:43 +00:00
Reid Spencer 309e03aea2 Beef up the output from DiffFilesWithTolerance by setting the error code 
to describe the difference being reported. This assists with understanding
differences an llvm-test and should help with bugpoint too.

llvm-svn: 31044
 2006-10-18 20:23:52 +00:00
Reid Spencer 8f0acfbe6a Add llvm.spec, a generated file. 
llvm-svn: 31041
 2006-10-18 19:23:56 +00:00
Jim Laskey 55e4dcad36 Add option for controlling inclusion of global AA. 
llvm-svn: 31040
 2006-10-18 19:08:31 +00:00
Chris Lattner f4aeff00c2 fit in 80 cols 
llvm-svn: 31039
 2006-10-18 18:26:48 +00:00
Chris Lattner 35a1471046 add a note 
llvm-svn: 31038
 2006-10-18 17:04:09 +00:00
Rafael Espindola bad440742e add blx 
llvm-svn: 31037
 2006-10-18 16:21:43 +00:00
Rafael Espindola 01dd97a8aa add isTerminatortto b and bcond 
llvm-svn: 31036
 2006-10-18 16:20:57 +00:00
Jim Laskey a15b0ebb5e Use global info for alias analysis. 
llvm-svn: 31035
 2006-10-18 12:29:57 +00:00
Rafael Espindola b21e8d2e12 implement CallingConv::Fast as CallingConv::C 
llvm-svn: 31034
 2006-10-18 12:03:07 +00:00
Anton Korobeynikov 24b7ac303c Fixed mingw\cygwin linkonce linkage once again. 
Added workaround for linker bug with linkonce sections.
Changed sections prefix to allow linker merge them
(PE loader doesn't like too much long-named sections :) )
All of this unbreaks libstdc++ on mingw32 allowing (small)
programs to be compiled, linked and run.

llvm-svn: 31033
 2006-10-18 09:12:29 +00:00