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15 Commits

Author SHA1 Message Date
Chris Lattner 583e95e0b2 Improve raising significantly 
llvm-svn: 1214
 2001-11-08 20:19:56 +00:00
Chris Lattner 0136101e37 Fix bugs 
llvm-svn: 1152
 2001-11-06 08:34:29 +00:00
Chris Lattner 710c3861b5 Fix bug with ADD nodes and malloc promotion 
llvm-svn: 1144
 2001-11-05 21:13:30 +00:00
Chris Lattner 0ecba60d26 Use the expression map correctly. 
llvm-svn: 1140
 2001-11-05 18:30:53 +00:00
Chris Lattner 3084cb65ff Refactor code to share stuff 
llvm-svn: 1127
 2001-11-04 23:24:06 +00:00
Chris Lattner cb3da314d9 * Relax restriction that prevented malloc promotion in certain cases 
llvm-svn: 1125
 2001-11-04 22:11:10 +00:00
Chris Lattner 36c5a79153 * 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 40a2d9076b 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 33d9cb9903 Minor method rename 
llvm-svn: 1119
 2001-11-04 08:08:34 +00:00
Chris Lattner f00563d39d Add transformations for Load and GetElementPtr. Fix broken transform with shr. 
llvm-svn: 1118
 2001-11-04 07:42:17 +00:00
Chris Lattner 9bc6b190cc * 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 71c842cddf 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 9a13ececd8 * 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 1267be2319 * 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 025f9fcf80 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