we aren't at the end of stream until we've consumed all the bytes AND all
the bits in those bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36861 91177308-0d34-0410-b5e6-96231b3b80d8

3DNowA implies 3DNow. 64-bit implies SSE1, SSE2, and I assume MMX.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36860 91177308-0d34-0410-b5e6-96231b3b80d8

add a missing check

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36859 91177308-0d34-0410-b5e6-96231b3b80d8

Fix MemoryBuffer::getFile to return null if it has an error opening the
file instead of aborting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36858 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a bug in my previous patch

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36857 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36856 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36855 91177308-0d34-0410-b5e6-96231b3b80d8

this doesn't directly depend on bytecode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36854 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36853 91177308-0d34-0410-b5e6-96231b3b80d8

archive library already depends on bc reader

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36852 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode support, optimize reading to not read all function bodies just
to get deplibs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36851 91177308-0d34-0410-b5e6-96231b3b80d8

use an auto_ptr to avoid an explicit delete

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36850 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36849 91177308-0d34-0410-b5e6-96231b3b80d8

Remove the -emit-bytecode option.  Noone in the llvm tree uses it, and this
keeps llvm-upgrade a simple "source to source" tool.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36848 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode reading support to llvm-nm

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36847 91177308-0d34-0410-b5e6-96231b3b80d8

pull some win32 code into common code, add bitcode identification support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36846 91177308-0d34-0410-b5e6-96231b3b80d8

add support for identifying bitcode files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36845 91177308-0d34-0410-b5e6-96231b3b80d8

bitcodify, remove eh cruft

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36844 91177308-0d34-0410-b5e6-96231b3b80d8

teach this to read from bitcode files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36843 91177308-0d34-0410-b5e6-96231b3b80d8

debugger depends on bcreader, not llvm-db

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36842 91177308-0d34-0410-b5e6-96231b3b80d8

remove EH cruft, add bitcode support

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36841 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode reading support, remove eh stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36840 91177308-0d34-0410-b5e6-96231b3b80d8

add bitcode reading support.  Remove EH cruft.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36839 91177308-0d34-0410-b5e6-96231b3b80d8

bitcodify

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36838 91177308-0d34-0410-b5e6-96231b3b80d8

simplify code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36837 91177308-0d34-0410-b5e6-96231b3b80d8

add support to llvm-prof for reading from a bitcode file

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36836 91177308-0d34-0410-b5e6-96231b3b80d8

Add a helper that either opens a file or stdin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36835 91177308-0d34-0410-b5e6-96231b3b80d8

Reference correct header

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36834 91177308-0d34-0410-b5e6-96231b3b80d8

Make code more 64-bit aware.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36833 91177308-0d34-0410-b5e6-96231b3b80d8

Keep header file free of 'possible loss of data' warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36832 91177308-0d34-0410-b5e6-96231b3b80d8

Unbreak VC++.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36831 91177308-0d34-0410-b5e6-96231b3b80d8

if -bitcode is specified, read and write a bitcode file instead of a bytecode file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36830 91177308-0d34-0410-b5e6-96231b3b80d8

add abbrevs for binops and casts.  This shrinks a testcase from 725132->682500
bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36829 91177308-0d34-0410-b5e6-96231b3b80d8

add a new CreateBitcodeWriterPass method, which creates a bitcode writer as
a pass

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36828 91177308-0d34-0410-b5e6-96231b3b80d8

implement reading/writing of inlineasm objects

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36827 91177308-0d34-0410-b5e6-96231b3b80d8

add inline asm code

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36826 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a subtle bug that prevented round-tripping 470.lbm

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36825 91177308-0d34-0410-b5e6-96231b3b80d8

Make my credits refer to my wiki page.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36824 91177308-0d34-0410-b5e6-96231b3b80d8

add some abbrevs for ret and unreachable, shrinking kc++ from 2717360->2705388

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36823 91177308-0d34-0410-b5e6-96231b3b80d8

enumerate the operands of a constant before we enumerate the constant itself
This avoids fwd references in the reader.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36822 91177308-0d34-0410-b5e6-96231b3b80d8

add a denser encoding for null terminated strings, add a 6-bit abbrev as
well.  This shrinks kc++ from 2724088 to 2717360 bytes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36821 91177308-0d34-0410-b5e6-96231b3b80d8

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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36820 91177308-0d34-0410-b5e6-96231b3b80d8

Add myself.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36819 91177308-0d34-0410-b5e6-96231b3b80d8

implement the 'string constant' optimization.  This shrinks kc.bit from
2878544 to 2815788

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36818 91177308-0d34-0410-b5e6-96231b3b80d8

further reduce the redundancy of types in the instruction encoding.  This
shrinks function bodies in kc++ from 891913B to 884073B

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36817 91177308-0d34-0410-b5e6-96231b3b80d8

stop encoding type/value pairs when the type is implied by the value.
This shrinks the function block of kc++ from 1055K to 906K

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36816 91177308-0d34-0410-b5e6-96231b3b80d8

handle gep aliasee

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36815 91177308-0d34-0410-b5e6-96231b3b80d8

Fix PR1390.
Don't spill extra register to align the stack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36814 91177308-0d34-0410-b5e6-96231b3b80d8

fix a bug I introduced when I merged some code together

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36813 91177308-0d34-0410-b5e6-96231b3b80d8

this test is now in Target/README.txt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36812 91177308-0d34-0410-b5e6-96231b3b80d8

add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36811 91177308-0d34-0410-b5e6-96231b3b80d8

remove an old xfailed test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36810 91177308-0d34-0410-b5e6-96231b3b80d8

Implement Transforms/InstCombine/cast_ptr.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36809 91177308-0d34-0410-b5e6-96231b3b80d8

un-xfail this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36808 91177308-0d34-0410-b5e6-96231b3b80d8

wrap long lines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36807 91177308-0d34-0410-b5e6-96231b3b80d8

the mason example is implemented.  Move some examples out of llvm/test,
upgrade the syntax of some other examples.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36806 91177308-0d34-0410-b5e6-96231b3b80d8

move these xfailed tests to lib/Target/README.txt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36805 91177308-0d34-0410-b5e6-96231b3b80d8

Move Mem2Reg/DifferingTypes.ll -> ScalarRepl/DifferingTypes.ll.  -scalarrepl
implements this xform.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36804 91177308-0d34-0410-b5e6-96231b3b80d8

remvoe two tests that cee has never gotten right

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36803 91177308-0d34-0410-b5e6-96231b3b80d8

implement anyextend from i1 -> i64

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36802 91177308-0d34-0410-b5e6-96231b3b80d8

the sparc v8 backend handles this correctly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36801 91177308-0d34-0410-b5e6-96231b3b80d8

remove this xfail'd test, move it to the X86 readme.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36800 91177308-0d34-0410-b5e6-96231b3b80d8

move CodeGen/X86/overlap-add.ll here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36799 91177308-0d34-0410-b5e6-96231b3b80d8

We need support for tail calls, this is moved to PR1392

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36798 91177308-0d34-0410-b5e6-96231b3b80d8

remove xfailed testcase (attached to pr)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36797 91177308-0d34-0410-b5e6-96231b3b80d8

unxfail this, llc doesn't support this feature yet, so don't run it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36796 91177308-0d34-0410-b5e6-96231b3b80d8

Remove bogus testcase, PR409 is wontfix

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36795 91177308-0d34-0410-b5e6-96231b3b80d8

this tests for a missing feature.  Move it to PR1391 instead of being an
xfailed testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36794 91177308-0d34-0410-b5e6-96231b3b80d8

remove this xfailed testcase, move it into a comment in PR279, an enhancement PR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36793 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-gcc3 is gone

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36792 91177308-0d34-0410-b5e6-96231b3b80d8

fix failure on ahs3's tester

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36791 91177308-0d34-0410-b5e6-96231b3b80d8

remove bogus xfailed testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36790 91177308-0d34-0410-b5e6-96231b3b80d8

Use the personality function that was registered with MMI rather than
hardwiring in the C++ one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36789 91177308-0d34-0410-b5e6-96231b3b80d8

Check that the right eh personality function is used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36788 91177308-0d34-0410-b5e6-96231b3b80d8

Propagate alignment/volatility in two places.

Implement support for expanding a bitcast from an illegal vector type to
a legal one (e.g. 4xi32 -> 4xf32 in SSE1).  This fixes PR1371 and
CodeGen/X86/2007-05-05-VecCastExpand.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36787 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase for PR1371

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36786 91177308-0d34-0410-b5e6-96231b3b80d8

add support for BLOCKINFO records at the module level.  This fixes the reader
issues reid noticed last night.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36785 91177308-0d34-0410-b5e6-96231b3b80d8

Fix Transforms/LoopUnroll/2007-05-05-UnrollMiscomp.ll and PR1385.

If we have a LCSSA, only modify the input value if the inval was defined
by an instruction in the loop.  If defined by something before the loop,
it is still valid.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36784 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase for PR1385

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36783 91177308-0d34-0410-b5e6-96231b3b80d8

make a temporary for *SI, no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36782 91177308-0d34-0410-b5e6-96231b3b80d8

Spelling fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36781 91177308-0d34-0410-b5e6-96231b3b80d8

Emit sections/directives in the proper order. This fixes PR1376. Also,
some small cleanup was made.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36780 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36779 91177308-0d34-0410-b5e6-96231b3b80d8

add abbrevs for the constants tables.  This shrinks it from 4.49755e6 bits
to 3.85972e6 bits in kc++

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36778 91177308-0d34-0410-b5e6-96231b3b80d8

minor bugfix

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36777 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36776 91177308-0d34-0410-b5e6-96231b3b80d8

Fix InstCombine/2007-05-04-Crash.ll and PR1384

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36775 91177308-0d34-0410-b5e6-96231b3b80d8

new testacse for PR1384

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36774 91177308-0d34-0410-b5e6-96231b3b80d8

emit spiffy little histograms of codes, if enabled.  Don't print averages if
there is only one item.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36773 91177308-0d34-0410-b5e6-96231b3b80d8

do not charge subblock sizes to the parent block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36772 91177308-0d34-0410-b5e6-96231b3b80d8

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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36771 91177308-0d34-0410-b5e6-96231b3b80d8

add a 6-bit encoding type for strings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36770 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36769 91177308-0d34-0410-b5e6-96231b3b80d8

update to new APIs, make output a bit (haha) nicer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36768 91177308-0d34-0410-b5e6-96231b3b80d8

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 :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36767 91177308-0d34-0410-b5e6-96231b3b80d8

Add a processor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36765 91177308-0d34-0410-b5e6-96231b3b80d8

allow the 8-bit abbrev to be used for either bb or other values

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36761 91177308-0d34-0410-b5e6-96231b3b80d8

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? :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36759 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36758 91177308-0d34-0410-b5e6-96231b3b80d8

use a template to eliminate manual code duplication

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36757 91177308-0d34-0410-b5e6-96231b3b80d8