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15503 Commits

Author SHA1 Message Date
Chris Lattner
9e59066602 Change keyword to datalayout 
llvm-svn: 31107
 2006-10-22 06:06:56 +00:00
Chris Lattner
50b3810d9a 3 Changes: 
1. Better document what is going on here.
2. Only hack on one branch per iteration, making the results less conservative.
3. Handle the problematic case by marking edges executable instead of by
   playing with value lattice states.  This is far less pessimistic, and fixes
   SCCP/ipsccp-gvar.ll.

llvm-svn: 31106
 2006-10-22 05:59:17 +00:00
Chris Lattner
9e7d74961b don't break infinite loops 
llvm-svn: 31102
 2006-10-21 06:11:43 +00:00
Chris Lattner
a9adb1e558 Implement support for branch reversal, fix a bug in branch analysis. 
This provides stuff like:

        cmpw cr0, r15, r29
        mr r14, r15
-       bge cr0, LBB3_111       ;bb656
-       b LBB3_90       ;bb501
+       blt cr0, LBB3_90        ;bb501
 LBB3_111:      ;bb656
        lwz r18, 68(r1)

which is particularly good for dispatch group formation.

llvm-svn: 31101
 2006-10-21 06:03:11 +00:00
Chris Lattner
210d322b1f 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
016325f336 Implement support for branch condition reversal. 
llvm-svn: 31099
 2006-10-21 05:52:40 +00:00
Chris Lattner
cf7f500cfd 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
20bb8bfd45 Simplify code, no functionality change 
llvm-svn: 31097
 2006-10-21 05:42:09 +00:00
Chris Lattner
d3e583b2e1 implement support for inserting a cond branch 
llvm-svn: 31096
 2006-10-21 05:36:13 +00:00
Chris Lattner
b638d287f4 allow insertion of a conditional branch with fall-through 
llvm-svn: 31095
 2006-10-21 05:34:23 +00:00
Chris Lattner
d4cb8dc857 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
596c126372 update assert message 
llvm-svn: 31093
 2006-10-21 04:42:29 +00:00
Chris Lattner
52a4558cf2 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
cf4137d0b9 implement MachineOperand::isIdenticalTo 
llvm-svn: 31088
 2006-10-20 22:39:59 +00:00
Chris Lattner
ef1a8ce64a llvm-extract should remove module-level asm 
llvm-svn: 31086
 2006-10-20 21:35:41 +00:00
Chris Lattner
3fb2b87f17 bugfix 
llvm-svn: 31074
 2006-10-20 20:44:34 +00:00
Chris Lattner
6ea0134893 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
38ed7d9e49 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
Chris Lattner
2f54afc364 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
62a0f00312 Implement branch analysis/xform hooks required by the branch folding pass. 
llvm-svn: 31065
 2006-10-20 17:42:20 +00:00
Reid Spencer
d414793dbc 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
b030b91f4a While creating mask, use 1ULL instead of 1. 
llvm-svn: 31062
 2006-10-20 01:16:56 +00:00
Chris Lattner
d9aa90ded4 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
5b4ca99562 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
edce5ede57 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
880a9d823f 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
88406a6e1e Typo Typo. 
llvm-svn: 31055
 2006-10-19 19:21:36 +00:00
Devang Patel
277990c79f Typo. 
llvm-svn: 31054
 2006-10-19 19:05:38 +00:00
Devang Patel
d9ade71cc7 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
c08546401b use Pat to implement extloadi8 and extloadi16 
llvm-svn: 31052
 2006-10-19 17:05:03 +00:00
Rafael Espindola
35e92188e0 implement undef 
llvm-svn: 31049
 2006-10-19 13:45:00 +00:00
Rafael Espindola
f7a41f3ddd print common symbols 
llvm-svn: 31048
 2006-10-19 13:30:40 +00:00
Rafael Espindola
722266845b implement extloadi8 and extloadi16 
llvm-svn: 31047
 2006-10-19 12:45:04 +00:00
Rafael Espindola
17544c1c1d expand SIGN_EXTEND_INREG 
llvm-svn: 31046
 2006-10-19 12:06:50 +00:00
Rafael Espindola
6cc20c7950 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
765ea73e59 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
Jim Laskey
c06a0bc853 Add option for controlling inclusion of global AA. 
llvm-svn: 31040
 2006-10-18 19:08:31 +00:00
Chris Lattner
a86fff7583 fit in 80 cols 
llvm-svn: 31039
 2006-10-18 18:26:48 +00:00
Chris Lattner
fa22dc8afe add a note 
llvm-svn: 31038
 2006-10-18 17:04:09 +00:00
Rafael Espindola
1220d18e11 add blx 
llvm-svn: 31037
 2006-10-18 16:21:43 +00:00
Rafael Espindola
73e8f41749 add isTerminatortto b and bcond 
llvm-svn: 31036
 2006-10-18 16:20:57 +00:00
Jim Laskey
288c230cbd Use global info for alias analysis. 
llvm-svn: 31035
 2006-10-18 12:29:57 +00:00
Rafael Espindola
80c7461ada implement CallingConv::Fast as CallingConv::C 
llvm-svn: 31034
 2006-10-18 12:03:07 +00:00
Anton Korobeynikov
d1436ae792 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
Owen Anderson
de03eb21c2 Add support for the new "target data" information in .ll files. This provides 
a better encoding of the targets data layout, rather than trying to guess it
from the endianness and pointersize like before.

Update the generated files.

llvm-svn: 31031
 2006-10-18 02:21:48 +00:00
Owen Anderson
12374f766b Add support for the new "target data" information in .ll files. This provides 
a better encoding of the targets data layout, rather than trying to guess it
from the endianness and pointersize like before.

llvm-svn: 31030
 2006-10-18 02:21:12 +00:00
Chris Lattner
0f686ec438 set the ppc64 stack pointer right, dynamic alloca now works for ppc64 
llvm-svn: 31028
 2006-10-18 01:20:43 +00:00
Chris Lattner
6c403f7102 Expand alloca for ppc64 
llvm-svn: 31027
 2006-10-18 01:18:48 +00:00
Chris Lattner
cd00328fad Teach the branch folder to update debug info if it removes blocks with line 
# notes in it.

llvm-svn: 31026
 2006-10-17 23:17:27 +00:00
Chris Lattner
22e311fe77 add a method to remove a line # record. 
llvm-svn: 31025
 2006-10-17 23:16:42 +00:00