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13 Commits

Author SHA1 Message Date
Rui Ueyama c464fadc64 Fix builbots. 
llvm-svn: 287735
 2016-11-23 03:58:12 +00:00
Rui Ueyama 877c26c844 Add convenient functions to compute hashes of byte vectors. 
In many sitautions, you just want to compute a hash for one chunk
of data. This patch adds convenient functions for that purpose.

Differential Revision: https://reviews.llvm.org/D26988

llvm-svn: 287726
 2016-11-23 00:46:09 +00:00
Rui Ueyama e5669cecde Attempt to fix big-endian buildbots. 
llvm-svn: 287476
 2016-11-20 01:41:28 +00:00
Rui Ueyama 567d9c4b8f Style fix. NFC. 
llvm-svn: 287475
 2016-11-20 01:15:56 +00:00
Rui Ueyama 218072a989 Fix buildbot. 
llvm-svn: 287474
 2016-11-20 01:13:22 +00:00
Rui Ueyama fe33661ab0 SHA1: unroll loop in hashBlock. 
This code is taken from public domain.
https://github.com/jsonn/src/blob/trunk/common/lib/libc/hash/sha1/sha1.c

I wrote a sha1 command and ran it on my Xeon E5-2680 v2 2.80GHz machine.
Here is a result. The new hash function is 37% faster than before.

 Performance counter stats for './llvm-sha1-old /ssd/build/bin/lld' (10 runs):

       6640.503687 task-clock (msec)         #    1.001 CPUs utilized            ( +-  0.03% )
                54 context-switches          #    0.008 K/sec                    ( +-  5.03% )
                 5 cpu-migrations            #    0.001 K/sec                    ( +- 31.73% )
           183,803 page-faults               #    0.028 M/sec                    ( +-  0.00% )
    18,527,954,113 cycles                    #    2.790 GHz                      ( +-  0.03% )
     4,993,237,485 stalled-cycles-frontend   #   26.95% frontend cycles idle     ( +-  0.11% )
   <not supported> stalled-cycles-backend
    50,217,149,423 instructions              #    2.71  insns per cycle
                                             #    0.10  stalled cycles per insn  ( +-  0.00% )
     6,094,322,337 branches                  #  917.750 M/sec                    ( +-  0.00% )
        11,778,239 branch-misses             #    0.19% of all branches          ( +-  0.01% )

       6.634017401 seconds time elapsed                                          ( +-  0.03% )

 Performance counter stats for './llvm-sha1-new /ssd/build/bin/lld' (10 runs):

       4167.062720 task-clock (msec)         #    1.001 CPUs utilized            ( +-  0.02% )
                52 context-switches          #    0.012 K/sec                    ( +- 16.45% )
                 7 cpu-migrations            #    0.002 K/sec                    ( +- 32.20% )
           183,804 page-faults               #    0.044 M/sec                    ( +-  0.00% )
    11,626,611,958 cycles                    #    2.790 GHz                      ( +-  0.02% )
     4,491,897,976 stalled-cycles-frontend   #   38.63% frontend cycles idle     ( +-  0.05% )
   <not supported> stalled-cycles-backend
    24,320,180,617 instructions              #    2.09  insns per cycle
                                             #    0.18  stalled cycles per insn  ( +-  0.00% )
     1,574,674,576 branches                  #  377.886 M/sec                    ( +-  0.00% )
        11,769,693 branch-misses             #    0.75% of all branches          ( +-  0.00% )

       4.163251552 seconds time elapsed                                          ( +-  0.02% )

Differential Revision: https://reviews.llvm.org/D26890

llvm-svn: 287473
 2016-11-20 01:03:22 +00:00
Mehdi Amini b550cb1750 [NFC] Header cleanup 
Removed some unused headers, replaced some headers with forward class declarations.

Found using simple scripts like this one:
clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' | xargs grep -L 'IndexedMap[<]' | xargs grep -n --color=auto 'IndexedMap'

Patch by Eugene Kosov <claprix@yandex.ru>

Differential Revision: http://reviews.llvm.org/D19219

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 266595
 2016-04-18 09:17:29 +00:00
Duncan P. N. Exon Smith 91d3cfed78 Revert "Fix Clang-tidy modernize-deprecated-headers warnings in remaining files; other minor fixes." 
This reverts commit r265454 since it broke the build.  E.g.:

  http://lab.llvm.org:8080/green/job/clang-stage1-cmake-RA-incremental_build/22413/

llvm-svn: 265459
 2016-04-05 20:45:04 +00:00
Eugene Zelenko 1760dc2a23 Fix Clang-tidy modernize-deprecated-headers warnings in remaining files; other minor fixes. 
Some Include What You Use suggestions were used too.

Use anonymous namespaces in source files.

Differential revision: http://reviews.llvm.org/D18778

llvm-svn: 265454
 2016-04-05 20:19:49 +00:00
Mehdi Amini 180441f09a Fix S390 big endian detection 
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265109
 2016-04-01 05:12:24 +00:00
Mehdi Amini 4cd5702578 Add support for computing SHA1 in LLVM 
Provide a class to generate a SHA1 from a sequence of bytes, and
a convenience raw_ostream adaptor.
This will be used to provide a "build-id" by hashing the Module
block when writing bitcode. ThinLTO will use this information for
incremental build.

Reapply r265094 which was reverted in r265102 because it broke
MSVC bots (constexpr is not supported).

http://reviews.llvm.org/D16325

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265107
 2016-04-01 04:30:16 +00:00
Mehdi Amini 85fb9e058e Revert "Add support for computing SHA1 in LLVM" 
This reverts commit r265096, r265095, and r265094.
Windows build is broken, and the validation does not pass.

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265102
 2016-04-01 03:03:21 +00:00
Mehdi Amini 3689ae14eb Add support for computing SHA1 in LLVM 
Provide a class to generate a SHA1 from a sequence of bytes, and
a convenience raw_ostream adaptor.
This will be used to provide a "build-id" by hashing the Module
block when writing bitcode. ThinLTO will use this information for
incremental build.

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 265094
 2016-04-01 01:29:54 +00:00