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238 Commits

Author SHA1 Message Date
Jeff Cohen b3f36d48c6 Unbreak VC++. 
llvm-svn: 36831
 2007-05-06 03:12:47 +00:00
Chris Lattner c67e6d9d16 add abbrevs for binops and casts. This shrinks a testcase from 725132->682500 
bytes.

llvm-svn: 36829
 2007-05-06 02:38:57 +00:00
Chris Lattner 7ef417107b add a new CreateBitcodeWriterPass method, which creates a bitcode writer as 
a pass

llvm-svn: 36828
 2007-05-06 02:30:12 +00:00
Chris Lattner af8fffc081 implement reading/writing of inlineasm objects 
llvm-svn: 36827
 2007-05-06 01:58:20 +00:00
Chris Lattner cc6d4c9fc2 add some abbrevs for ret and unreachable, shrinking kc++ from 2717360->2705388 
llvm-svn: 36823
 2007-05-06 01:28:01 +00:00
Chris Lattner 9ee4836dde enumerate the operands of a constant before we enumerate the constant itself 
This avoids fwd references in the reader.

llvm-svn: 36822
 2007-05-06 01:00:28 +00:00
Chris Lattner f25f710c4d add a denser encoding for null terminated strings, add a 6-bit abbrev as 
well.  This shrinks kc++ from 2724088 to 2717360 bytes.

llvm-svn: 36821
 2007-05-06 00:53:07 +00:00
Chris Lattner 4b6ce8fa59 add an abbreviation for the string constants opzn, shrinking the constnats 
block from:

  Block ID #11 (CONSTANTS_BLOCK):
      Num Instances: 1722
         Total Size: 3.85976e+06b/482470B/120617W
          % of file: 16.7609
       Average Size: 2241.44b/280.18B/70.045W
  Tot/Avg SubBlocks: 0/0
    Tot/Avg Abbrevs: 1/0.00058072
    Tot/Avg Records: 26423/15.3444
      % Abbrev Recs: 69.1746

to:

 Block ID #11 (CONSTANTS_BLOCK):
      Num Instances: 1724
         Total Size: 2.62406e+06b/328008B/82001.9W
          % of file: 12.041
       Average Size: 1522.08b/190.26B/47.5649W
  Tot/Avg SubBlocks: 0/0
    Tot/Avg Abbrevs: 2/0.00116009
    Tot/Avg Records: 26280/15.2436
      % Abbrev Recs: 68.9992

This shrinks kc++ from 2815788 to 2724088 bytes, which means the bitcode
file is now smaller than the bytecode file.

llvm-svn: 36820
 2007-05-06 00:42:18 +00:00
Chris Lattner 036d1bddf2 implement the 'string constant' optimization. This shrinks kc.bit from 
2878544 to 2815788

llvm-svn: 36818
 2007-05-06 00:35:24 +00:00
Chris Lattner e9759c29d1 further reduce the redundancy of types in the instruction encoding. This 
shrinks function bodies in kc++ from 891913B to 884073B

llvm-svn: 36817
 2007-05-06 00:21:25 +00:00
Chris Lattner df1233dfbb stop encoding type/value pairs when the type is implied by the value. 
This shrinks the function block of kc++ from 1055K to 906K

llvm-svn: 36816
 2007-05-06 00:00:00 +00:00
Chris Lattner 6eeea5dc05 add support for BLOCKINFO records at the module level. This fixes the reader 
issues reid noticed last night.

llvm-svn: 36785
 2007-05-05 18:57:30 +00:00
Chris Lattner b80751dca2 add an abbrev for loads. This shrinks the function block about 50K, from: 
Block ID #12 (FUNCTION_BLOCK):
      Num Instances: 2344
         Total Size: 8.8434e+06b/1.10542e+06B/276356W
          % of file: 35.6726
       Average Size: 3772.78b/471.598B/117.899W
  Tot/Avg SubBlocks: 4065/1.73422
    Tot/Avg Abbrevs: 0/0
    Tot/Avg Records: 128487/54.8153
      % Abbrev Recs: 0

to:

 Block ID #12 (FUNCTION_BLOCK):
      Num Instances: 2344
         Total Size: 8.44518e+06b/1.05565e+06B/263912W
          % of file: 34.6203
       Average Size: 3602.89b/450.362B/112.59W
  Tot/Avg SubBlocks: 4065/1.73422
    Tot/Avg Abbrevs: 0/0
    Tot/Avg Records: 128487/54.8153
      % Abbrev Recs: 22.2077

llvm-svn: 36779
 2007-05-05 07:44:49 +00:00
Chris Lattner da5e5d211b add abbrevs for the constants tables. This shrinks it from 4.49755e6 bits 
to 3.85972e6 bits in kc++

llvm-svn: 36778
 2007-05-05 07:36:14 +00:00
Chris Lattner ccee706345 Add abbreviations to the TYPE_BLOCK for pointers, functions, structs and arrays. 
This shrinks the type_block of kc++ from 139901 bits to 99389 bits (0.55% to 0.39%
of the file), a 40% reduction.

This shrink the record from:

  Block ID #10 (TYPE_BLOCK):
      Num Instances: 1
         Total Size: 139901b/17487.6B/4371.91W
          % of file: 0.549306
        Num Abbrevs: 0
        Num Records: 3203
      % Abbrev Recs: 0

to:

  Block ID #10 (TYPE_BLOCK):
      Num Instances: 1
         Total Size: 99389b/12423.6B/3105.91W
          % of file: 0.390862
        Num Abbrevs: 4
        Num Records: 3203
      % Abbrev Recs: 99.6566

With a common histogram of:

       Code Histogram:
                1613    POINTER
                1100    FUNCTION
                255     STRUCT
                224     ARRAY
                5       INTEGER
                2       OPAQUE
                1       LABEL
                1       DOUBLE
                1       VOID
                1       NUMENTRY

llvm-svn: 36776
 2007-05-05 06:30:12 +00:00
Chris Lattner e760d6f4c1 add a char6 abbrev for bbnames and value names. This represents each character 
with 6 bits where possible.  This shrinks kc++ from 3324164B to 3183584B.  The
old VST was:

  Block ID #14 (VALUE_SYMTAB):
         Total Size: 1.26713e+07b/1.58391e+06B/395978W
       Average Size: 5403.53b/675.442B/168.86W
          % of file: 47.6484

The new one is:

  Block ID #14 (VALUE_SYMTAB):
         Total Size: 1.15467e+07b/1.44334e+06B/360834W
       Average Size: 4923.96b/615.495B/153.874W
          % of file: 45.3368

This is 11% smaller than the VST in the bytecode format.

llvm-svn: 36771
 2007-05-05 01:26:50 +00:00
Chris Lattner de05f6be35 add an abbreviation for the type symtab, this shrinks the TST from 175197 bits 
to 103165 bits:

Old:
  Block ID #13 (TYPE_SYMTAB):
      Num Instances: 1
         Total Size: 175197b/21899.6B/5474.91W
       Average Size: 175197b/21899.6B/5474.91W
          % of file: 0.657023
  Tot/Avg SubBlocks: 0/0
    Tot/Avg Abbrevs: 0/0
    Tot/Avg Records: 255/255
      % Abbrev Recs: 0

New:
  Block ID #13 (TYPE_SYMTAB):
      Num Instances: 1
         Total Size: 103165b/12895.6B/3223.91W
       Average Size: 103165b/12895.6B/3223.91W
          % of file: 0.387937
  Tot/Avg SubBlocks: 0/0
    Tot/Avg Abbrevs: 1/1
    Tot/Avg Records: 255/255
      % Abbrev Recs: 100

llvm-svn: 36769
 2007-05-05 00:47:19 +00:00
Chris Lattner 982ec1eddc Implement support for globally associating abbrevs with block IDs, which 
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 :)

llvm-svn: 36767
 2007-05-05 00:17:00 +00:00
Chris Lattner a09879663d allow the 8-bit abbrev to be used for either bb or other values 
llvm-svn: 36761
 2007-05-04 21:31:13 +00:00
Chris Lattner fd1ad10e61 shave another 150K off of kc++, by using a 7-bit encoding for BB names 
where we can.  This shrinks kc++'s down to 3368K, with a VST record of:

  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

Isn't it nice to be able to optimizer bc size without touching the reader? :)

llvm-svn: 36759
 2007-05-04 20:58:35 +00:00
Chris Lattner 4d92598ab0 where possible, encode symtab names with 7 bits per char instead of 8. This 
shaves 110K off kc++ to 3514K.  Before:

  Block ID #14 (VALUE_SYMTAB):
      Num Instances: 2345
         Total Size: 1.50425e+07b/1.88031e+06B/470077W
       Average Size: 6414.69b/801.837B/200.459W
          % of file: 51.8057
  Tot/Avg SubBlocks: 0/0
    Tot/Avg Abbrevs: 2345/1
    Tot/Avg Records: 120924/51.5667
      % Abbrev Recs: 85.1791

after:

  Block ID #14 (VALUE_SYMTAB):
      Num Instances: 2345
         Total Size: 1.41229e+07b/1.76536e+06B/441341W
       Average Size: 6022.56b/752.82B/188.205W
          % of file: 50.2295
  Tot/Avg SubBlocks: 0/0
    Tot/Avg Abbrevs: 4690/2
    Tot/Avg Records: 120924/51.5667
      % Abbrev Recs: 85.1791

llvm-svn: 36758
 2007-05-04 20:52:02 +00:00
Chris Lattner 2eae59f1c1 Encode all value symtab strings as arrays of 8-bit fixed width integers, 
instead of the default inefficient encoding.  This shrinks kc++ from 4134K
to 3629K

llvm-svn: 36755
 2007-05-04 20:34:50 +00:00
Chris Lattner e14cb88e56 eliminate internal length fields from record. Records already know their 
total length

llvm-svn: 36752
 2007-05-04 19:11:41 +00:00
Chris Lattner 702658c0cc stub out creation of BLOCKINFO_BLOCK 
llvm-svn: 36749
 2007-05-04 18:26:27 +00:00
Chris Lattner 430e80d670 optimize constant layout. This fixes encoding of 181.mcf (by ensuring 
integer structure idx's are emitted before constant expr geps) and shrinks
files slightly.  For example kc++ shrinks from 4326188 to 4240128 bytes.

llvm-svn: 36742
 2007-05-04 05:21:47 +00:00
Chris Lattner a8713beddd simple optimization for the type table 
llvm-svn: 36741
 2007-05-04 05:05:48 +00:00
Chris Lattner beca065b1e storeinst ctor takes isvolatile before alignment. With this, 176.gcc roundtrips 
llvm-svn: 36738
 2007-05-04 03:57:30 +00:00
Chris Lattner 485a6d8fad fix encoding of invoke instructions. kc++ now round trips 
llvm-svn: 36737
 2007-05-04 03:52:24 +00:00
Chris Lattner e11c6ce3bc fix a misplaced error 
llvm-svn: 36736
 2007-05-04 03:50:29 +00:00
Chris Lattner 70f4566d8a encode and read param attrs along with function type. WE can now roundtrip Olden/voronoi loslessly 
llvm-svn: 36735
 2007-05-04 03:41:34 +00:00
Chris Lattner fee5a3752a add support for reading the param attrs block 
llvm-svn: 36731
 2007-05-04 03:30:17 +00:00
Chris Lattner fc5b619419 fix a bug encoding param attrs 
llvm-svn: 36730
 2007-05-04 03:14:09 +00:00
Chris Lattner a68e3c7cf3 remove dead code 
llvm-svn: 36728
 2007-05-04 03:02:54 +00:00
Chris Lattner e72bf9fda6 add writer support for param attrs 
llvm-svn: 36724
 2007-05-04 02:59:04 +00:00
Reid Spencer dea02bd840 Allow this to compile with gcc 4.0.X 
llvm-svn: 36723
 2007-05-04 01:43:33 +00:00
Chris Lattner 874eb28ee6 pass by reference, not by value 
llvm-svn: 36721
 2007-05-04 00:45:24 +00:00
Chris Lattner e2f98ef52d trivial scaffolding for param attrs 
llvm-svn: 36720
 2007-05-04 00:44:52 +00:00
Chris Lattner e4bbad630f enumerate parameter attr lists. 
llvm-svn: 36709
 2007-05-03 22:46:43 +00:00
Chris Lattner 4704527576 Encoding calling conv info in call/invoke instrs, tree add now round trips completely 
llvm-svn: 36707
 2007-05-03 22:34:03 +00:00
Chris Lattner c1d86cda8c the type field for a store is the type of the pointer, not the value. 
With this fix I can round trip treeaadd, only losing calling conv info.

llvm-svn: 36706
 2007-05-03 22:21:59 +00:00
Chris Lattner 4bb39dbfde don't bother encoding # varargs 
llvm-svn: 36705
 2007-05-03 22:19:34 +00:00
Chris Lattner 6be58c65d4 fix encoding of BB names in the symtab 
llvm-svn: 36704
 2007-05-03 22:18:21 +00:00
Chris Lattner 6ce15cb71e bug fixes 
llvm-svn: 36701
 2007-05-03 22:09:51 +00:00
Chris Lattner 9f600c5d9d implement the rest of the instructions 
llvm-svn: 36699
 2007-05-03 22:04:19 +00:00
Chris Lattner c332bbaae4 add a few more instructions, getting close 
llvm-svn: 36688
 2007-05-03 18:58:09 +00:00
Chris Lattner 5285b5ea2f add reader logic for terminator instrs. 
llvm-svn: 36642
 2007-05-02 05:46:45 +00:00
Chris Lattner 1fc27f0cdb add reader support for a bunch of new instructions 
llvm-svn: 36641
 2007-05-02 05:16:49 +00:00
Chris Lattner e53603e4e2 read a few instructions, fix some bugs. This is enough to be able to round 
trip function bodies like this:

define <2 x i64> @foo(<2 x i64> %x, <2 x i64> %y) {
        %tmp4 = bitcast <2 x i64> %y to <8 x i16>               ; <<8 x i16>> [#uses=1]
        %tmp5 = bitcast <2 x i64> %x to <8 x i16>               ; <<8 x i16>> [#uses=1]
        %tmp = add <8 x i16> %tmp5, %tmp4               ; <<8 x i16>> [#uses=1]
        %tmp6 = bitcast <8 x i16> %tmp to <2 x i64>             ; <<2 x i64>> [#uses=1]
        ret <2 x i64> %tmp6
}

llvm-svn: 36640
 2007-05-02 04:27:25 +00:00
Chris Lattner 9f35f9112d use the correct code for binop instrs 
llvm-svn: 36639
 2007-05-02 04:26:36 +00:00
Chris Lattner b811e951e9 fix build with non-buggy compilers 
llvm-svn: 36621
 2007-05-01 07:03:37 +00:00
Chris Lattner 8393055447 handle function-level forward references, read binops. 
llvm-svn: 36620
 2007-05-01 07:01:57 +00:00
Chris Lattner 85b7b40621 implement materializeModule, force deallocation of vector memory when we 
are done with them, start implementing ParseFunctionBody

llvm-svn: 36617
 2007-05-01 05:52:21 +00:00
Chris Lattner 48a8de3f4d The stream to read from is now an ivar 
llvm-svn: 36615
 2007-05-01 05:01:34 +00:00
Chris Lattner 51ffe7ce15 implement scafolding for lazy deserialization of function bodies 
llvm-svn: 36614
 2007-05-01 04:59:48 +00:00
Chris Lattner fb6f9407ec write the symbol table for function bodies 
llvm-svn: 36610
 2007-05-01 02:14:57 +00:00
Chris Lattner 0a60325621 encode all of the instructions. 
llvm-svn: 36609
 2007-05-01 02:13:26 +00:00
Anton Korobeynikov 31fc4f9526 Implement visibility checking during linking. Also implement protected 
visibility support for bitcode.

llvm-svn: 36577
 2007-04-29 20:56:48 +00:00
Chris Lattner 6694f60bec Switch the bitcode reader interface to take a MemoryBuffer instead of knowing 
anything about disk I/O itself.  This greatly simplifies its interface -
eliminating the need for the ReaderWrappers.cpp file.

This adds a new option to llvm-dis (-bitcode) which instructs it to read
the input file as bitcode.  Until/unless the bytecode reader is taught to
read from MemoryBuffer, there is no way to handle stdin reading without it.

I don't plan to switch the bytecode reader over, I'd rather delete it :),
so the option will stay around temporarily.

llvm-svn: 36554
 2007-04-29 07:54:31 +00:00
Chris Lattner f0a1ebae4b Fix this to use the right block ID 
llvm-svn: 36550
 2007-04-29 05:49:09 +00:00
Chris Lattner 87351e2a52 moved Writer.cpp -> BitcodeWriter.cpp to make it more unique in the tree. 
llvm-svn: 36549
 2007-04-29 05:31:57 +00:00
Anton Korobeynikov daf358bbff This is not "FIXME" anymore 
llvm-svn: 36541
 2007-04-28 14:57:59 +00:00
Chris Lattner e6e364c198 start code for writing out instructions. Separate BB#s from normal value 
#'s.

llvm-svn: 36472
 2007-04-26 05:53:54 +00:00
Chris Lattner 7c37b01998 enumerate BB's separately from other function values. 
llvm-svn: 36467
 2007-04-26 04:42:16 +00:00
Chris Lattner 5f640b9cc9 add support for incorporating and purging functions to the value enumerator 
llvm-svn: 36465
 2007-04-26 03:50:57 +00:00
Chris Lattner a5211c43c2 improve a comment 
llvm-svn: 36464
 2007-04-26 03:32:43 +00:00
Chris Lattner 831d420256 move some code around, fix a bug in the reader reading globalinits (which 
I just introduced), stub out function reading, purge aggregate values from
the value table before reading functions.

llvm-svn: 36463
 2007-04-26 03:27:58 +00:00
Chris Lattner 44c1707207 add bitcode alias support 
llvm-svn: 36461
 2007-04-26 02:46:40 +00:00
Chris Lattner 890683d636 ensure that every error return sets a message (and goes through Error, for 
easy breakpointing).

Fix bugs reading constantexpr geps.  We now can disassemble kc++ global
initializers.

llvm-svn: 36398
 2007-04-24 18:15:21 +00:00
Chris Lattner 0ee6a3a561 fix memory leak 
llvm-svn: 36397
 2007-04-24 17:22:05 +00:00
Chris Lattner 1e16bcf7ff implement reading and writing of constant exprs. 
llvm-svn: 36394
 2007-04-24 07:07:11 +00:00
Chris Lattner 1663ccaf13 implement support for reading aggregate constants, including handling forward 
constant references, etc.

llvm-svn: 36391
 2007-04-24 05:48:56 +00:00
Chris Lattner 08feb1e73a add supprot for FP constants, wide integers, and fix the encoding of MININT 
llvm-svn: 36390
 2007-04-24 04:04:35 +00:00
Chris Lattner fbc1d33b81 read basic constants: null, undef, integers <= 64bits 
llvm-svn: 36389
 2007-04-24 03:30:34 +00:00
Chris Lattner 1e50c299a8 fix off-by-one computing size for section abbrevs 
llvm-svn: 36388
 2007-04-24 03:29:47 +00:00
Chris Lattner a272ead35a move check to the right place :) 
llvm-svn: 36386
 2007-04-24 00:21:45 +00:00
Chris Lattner 47d131bd32 track global inits 
llvm-svn: 36385
 2007-04-24 00:18:21 +00:00
Chris Lattner 52523561d9 Emit module-level constants. 
llvm-svn: 36384
 2007-04-24 00:16:04 +00:00
Chris Lattner ccaa448dcf Read global symtab 
llvm-svn: 36378
 2007-04-23 21:26:05 +00:00
Chris Lattner 1e93f5b8f4 fix off-by one 
llvm-svn: 36377
 2007-04-23 21:23:41 +00:00
Chris Lattner 215e9cd3c2 write out the symtab for globals. 
llvm-svn: 36374
 2007-04-23 20:35:01 +00:00
Chris Lattner b5491378b1 implement reading of abbrevs, and writing of abbreviated global varrs. 
llvm-svn: 36367
 2007-04-23 18:58:34 +00:00
Chris Lattner 4b00d92a09 first part of implementation of abbrevs. The writer isn't fully there yet and the 
reader doesn't handle them at all yet.

llvm-svn: 36363
 2007-04-23 16:04:05 +00:00
Chris Lattner 362b4a1c92 promote LLVMBitCodes to be a public header 
llvm-svn: 36358
 2007-04-23 01:01:37 +00:00
Jeff Cohen 33be4c78ef Fix build problem with Gentoo 4.1.1-r3. 
llvm-svn: 36348
 2007-04-22 18:49:32 +00:00
Chris Lattner a1b07bee6a add llvm ir bitcode definition file 
llvm-svn: 36337
 2007-04-22 07:03:00 +00:00
Chris Lattner 20571d9c35 build the bitcode dir 
llvm-svn: 36332
 2007-04-22 06:26:05 +00:00
Chris Lattner c1d10d67a1 Initial support for writing bitcode files. This currently only writes types, 
the type symtab, and global/function protos, and is missing the important
size optimization, but it is a place to start.

llvm-svn: 36331
 2007-04-22 06:24:45 +00:00
Chris Lattner 1314b9996d Initial support for reading bitcode files. They currently only read types, 
the type symtab, and global/function protos, and are missing the important
size optimization, but it is a place to start.

llvm-svn: 36330
 2007-04-22 06:23:29 +00:00