6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-14 14:24:05 +00:00
Code Issues Projects Releases Wiki Activity

Implement support for globally associating abbrevs with block IDs, which

Browse Source 
relieves us from having to emit the abbrevs into each instance of the block.
This shrinks kc.bit from 3368K to 3333K, but will be a more significant win
once instructions are abbreviated.

The VST went from:

  Block ID #14 (VALUE_SYMTAB):
      Num Instances: 2345
         Total Size: 1.29508e+07b/1.61885e+06B/404713W
       Average Size: 5522.73b/690.342B/172.585W
          % of file: 48.0645
  Tot/Avg SubBlocks: 0/0
    Tot/Avg Abbrevs: 7035/3
    Tot/Avg Records: 120924/51.5667
      % Abbrev Recs: 100

to:

  Block ID #14 (VALUE_SYMTAB):
      Num Instances: 2345
         Total Size: 1.26713e+07b/1.58391e+06B/395978W
       Average Size: 5403.53b/675.442B/168.86W
          % of file: 47.5198
  Tot/Avg SubBlocks: 0/0
    Tot/Avg Abbrevs: 0/0
    Tot/Avg Records: 120924/51.5667
      % Abbrev Recs: 100

because we didn't emit the same 3 abbrevs 2345 times :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36767 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-05-05 00:17:00 +00:00
parent a8e9562906
commit e17b658c79
5 changed files with 264 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/llvm/Bitcode/BitCodes.h
View File

@ -66,8 +66,9 @@ namespace bitc {
/// BlockInfoCodes - The blockinfo block contains metadata about user-defined
/// blocks.
enum BlockInfoCodes {
BLOCKINFO_CODE_SETBID = 1, // SETBID: [blockid#]
BLOCKINFO_CODE_ABBREV = 2 // ABBREV: [standard abbrev encoding]
BLOCKINFO_CODE_SETBID = 1 // SETBID: [blockid#]
// DEFINE_ABBREV has magic semantics here, applying to the current SETBID'd
// block, instead of the BlockInfo block.
// BLOCKNAME: give string name to block, if desired.
};