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174 Commits

Author SHA1 Message Date
Chris Lattner
71a0797f80 * Change ExpressionConvertableToType to more closely match map behavior of 
ConvertExpressionToType
* Make ValueHandle's remove instruction from maps when they are deleted so that
  no false map hits occur if a subsequent instruction is allocated to the same
  space in memory.  This was a VERY VERY VERY EVIL NASTY BUG to track down. :-P

llvm-svn: 1288
 2001-11-13 05:01:36 +00:00
Chris Lattner
3b2e10698f Avoid assertion failure when taking size of unsized array. Todo item herE 
llvm-svn: 1286
 2001-11-13 04:59:41 +00:00
Chris Lattner
184137a419 Fix minor bug 
llvm-svn: 1273
 2001-11-12 20:13:04 +00:00
Ruchira Sasanka
3e193c7709 Changed insert instructions only for CONSTANTS - back to original 
llvm-svn: 1271
 2001-11-12 19:32:04 +00:00
Chris Lattner
053906abc0 Initail checking of structure swapper 
llvm-svn: 1248
 2001-11-10 07:28:25 +00:00
Chris Lattner
79fd0836bb Initial checkin of structure mutator 
llvm-svn: 1246
 2001-11-10 07:26:31 +00:00
Chris Lattner
de13795a04 Remove false optimization that basically broke everything 
llvm-svn: 1219
 2001-11-09 01:08:10 +00:00
Chris Lattner
7969ed3025 * Add better caching of data to avoid silly recusions 
* Only check to see if uses of instructions can be converted for expressions... so we don't look at all of the uses of a constant.  This was making the code unnecessarily conservative

llvm-svn: 1218
 2001-11-08 22:06:31 +00:00
Chris Lattner
fdc70e08d0 Improve raising significantly 
llvm-svn: 1214
 2001-11-08 20:19:56 +00:00
Vikram S. Adve
a0da8fc9c5 Bug fix: cannot modify Phi operands while iterating over them! 
llvm-svn: 1203
 2001-11-08 05:25:33 +00:00
Chris Lattner
e33afc1d46 Add #includes to enable buiding in Release mode 
llvm-svn: 1174
 2001-11-07 13:49:45 +00:00
Chris Lattner
a688655cba Fix minor bug for shifts 
llvm-svn: 1160
 2001-11-06 21:51:48 +00:00
Chris Lattner
fcf608c1a7 Fix bugs 
llvm-svn: 1152
 2001-11-06 08:34:29 +00:00
Chris Lattner
da8737d88a Fix many bugs. Implement PHI transforms & other cycles 
llvm-svn: 1151
 2001-11-06 08:34:17 +00:00
Chris Lattner
688f944802 Fix bug with ADD nodes and malloc promotion 
llvm-svn: 1144
 2001-11-05 21:13:30 +00:00
Chris Lattner
d376cb5113 Don't print spurious linking warnings about methods that are never used. 
Cleanup ExprTypeConvert a bit.

llvm-svn: 1141
 2001-11-05 19:43:10 +00:00
Chris Lattner
a346367992 Use the expression map correctly. 
llvm-svn: 1140
 2001-11-05 18:30:53 +00:00
Chris Lattner
68180b2837 New file for expression tree conversion 
llvm-svn: 1128
 2001-11-04 23:24:20 +00:00
Chris Lattner
5d261d7928 Refactor code to share stuff 
llvm-svn: 1127
 2001-11-04 23:24:06 +00:00
Chris Lattner
f358050083 * Relax restriction that prevented malloc promotion in certain cases 
llvm-svn: 1125
 2001-11-04 22:11:10 +00:00
Chris Lattner
84715d0d46 * Disable debug output 
* fix minor bug with taking datasize of unsized array type
* Insert code to support speculative changes later

llvm-svn: 1122
 2001-11-04 21:32:11 +00:00
Chris Lattner
50508dde95 Convert backward conversion of expression trees into a new more powerful bidirectional approach. Add transforms for more instructions. 
llvm-svn: 1121
 2001-11-04 20:21:12 +00:00
Chris Lattner
ea63d43a07 Minor method rename 
llvm-svn: 1119
 2001-11-04 08:08:34 +00:00
Chris Lattner
1b0ded767a Add transformations for Load and GetElementPtr. Fix broken transform with shr. 
llvm-svn: 1118
 2001-11-04 07:42:17 +00:00
Chris Lattner
42cf9aaa3a Fix cast instructions that end up in bad places in GCC output 
llvm-svn: 1117
 2001-11-04 07:40:51 +00:00
Chris Lattner
82c7401f23 Avoid making a broken transformation! 
llvm-svn: 1115
 2001-11-03 21:30:22 +00:00
Chris Lattner
2b011e7b50 Add new cleanup pass: 
//  1. PHI nodes with multiple entries for the same predecessor.  GCC sometimes
//     generates code that looks like this:
//
//  bb7:  br bool %cond1004, label %bb8, label %bb8
//  bb8: %reg119 = phi uint [ 0, %bb7 ], [ 1, %bb7 ]
//
//     which is completely illegal LLVM code.  To compensate for this, we insert
//     an extra basic block, and convert the code to look like this:
//
//  bb7: br bool %cond1004, label %bbX, label %bb8
//  bbX: br label bb8
//  bb8: %reg119 = phi uint [ 0, %bbX ], [ 1, %bb7 ]
//

llvm-svn: 1114
 2001-11-03 21:08:59 +00:00
Chris Lattner
bcdf581aec * Export method to merge identically named methods 
* Add code to fix PHI nodes that are missing arguments.  These PHI nodes can
  be generated by GCC if there is an uninitialized variable flowing into a merge
  point.  For example:

int foo(int y) {
  int X;
  if (y) X = 1;
  return X;
}

llvm-svn: 1110
 2001-11-03 19:51:56 +00:00
Ruchira Sasanka
ee84dc6f89 Commented out code so that copies are inserted for all phi args 
CahedCopyMap was disabled to insert phi elimination code for all phi args

llvm-svn: 1105
 2001-11-03 17:09:59 +00:00
Chris Lattner
30050d95ae Changes to compile the TSP benchmark successfully. Favor warning instead of assertion failures. 
llvm-svn: 1103
 2001-11-03 10:04:22 +00:00
Chris Lattner
fb0626b9ed Add code to link method together with the same name if one is vararg and the other isn't. 
This resolves definitions like this:
   %list * "foo"(...)
   %list * "foo"(int)

together which can often occur because C programmers don't put prototypes in like they should.  GRR

llvm-svn: 1102
 2001-11-03 09:19:00 +00:00
Chris Lattner
b778b5bd90 Don't forget to link type names together too. Fix for Olden/mst benchmark 
llvm-svn: 1094
 2001-11-03 05:18:24 +00:00
Chris Lattner
b995f1c44f Add extra code for debugging linker problems 
llvm-svn: 1091
 2001-11-03 03:27:29 +00:00
Chris Lattner
7682955ac0 * Add comments for peepholes 
* Implement new peephole:
     // Peephole optimize the following instructions:
     // %t1 = cast {<...>} * %StructPtr to <ty> *
     //
     // Into: %t2 = getelementptr {<...>} * %StructPtr, <0, 0, 0, ...>
     //       %t1 = cast <eltype> * %t1 to <ty> *

  This peephole eliminated 9 evil casts in the health benchmark, and
  completely turned the addList method around.  :)

llvm-svn: 1085
 2001-11-01 17:05:27 +00:00
Chris Lattner
06e4402e71 Add DCE as integral part of the level raising to avoid processing instructions that are dead 
llvm-svn: 1084
 2001-11-01 07:00:51 +00:00
Chris Lattner
a621bac2a6 Expose the low level DCE mechanism to external users 
Refactor code to support it

llvm-svn: 1083
 2001-11-01 07:00:27 +00:00
Chris Lattner
8b30d77212 * Implement expression type conversion for constant values 
* Fix a problem setting a name on a constant value that died because no symbol table was passed in
* Add some comments describing the passes
* Implement a new peephole:
     // Peephole optimize the following instructions:
     // %t = cast <T1>* %P to <T2> * ;; If T1 is losslessly convertable to T2
     // store <T2> %V, <T2>* %t
     //
     // Into:
     // %t = cast <T2> %V to <T1>
     // store <T1> %t2, <T1>* %P

llvm-svn: 1080
 2001-11-01 05:57:59 +00:00
Chris Lattner
3b2c78da03 Simplify DCE code a lot 
llvm-svn: 1079
 2001-11-01 05:55:29 +00:00
Chris Lattner
261785f670 * Convert getelementptr/store pairs into a single store 
* Convert getelementptr/load pairs into a single load

llvm-svn: 1075
 2001-11-01 03:12:34 +00:00
Chris Lattner
01dc694896 Initial checkin of level raising code, after move and cleanup and expands from the opt directory 
llvm-svn: 1074
 2001-11-01 02:42:08 +00:00
Chris Lattner
cd8bcd33aa Propogate name to the malloc itself instead of to the cast 
llvm-svn: 1071
 2001-11-01 02:40:36 +00:00
Chris Lattner
986e273442 Use the correct prototype for malloc and free 
llvm-svn: 1066
 2001-10-31 06:36:23 +00:00
Chris Lattner
009d9de81c Implement code to convert %malloc and %free FUNCTION CALLS into the instruction equivalent 
llvm-svn: 1065
 2001-10-31 06:35:59 +00:00
Chris Lattner
91fc057638 Implemented constant propogation of cast instructions 
llvm-svn: 1064
 2001-10-31 05:07:57 +00:00
Chris Lattner
a9dacc1925 Initial version of GCC cleanup pass: just removes extraneous global symbol table entries for types 
llvm-svn: 1062
 2001-10-31 04:33:19 +00:00
Chris Lattner
98ce708757 Fix bug when inlining a method that refers to a global variable 
llvm-svn: 1056
 2001-10-31 02:27:26 +00:00
Chris Lattner
37164a34d5 Fix broken assertion. Didn't allow for pointer case 
llvm-svn: 1034
 2001-10-29 17:27:38 +00:00
Chris Lattner
d8958859d9 Pull method symbols over when linking. Otherwise the result of the link will appear stripped 
llvm-svn: 1033
 2001-10-29 16:55:41 +00:00
Vikram S. Adve
3af80d1a15 Make newlines be newlines! This should now work in both lli and native code. 
llvm-svn: 1016
 2001-10-28 22:44:02 +00:00
Chris Lattner
42883552ec Remove non linking related stuff 
llvm-svn: 1015
 2001-10-28 22:43:06 +00:00