Commit Graph

6 Commits

Author SHA1 Message Date
Duncan P. N. Exon Smith 6611a377eb Revert "blockfreq: Temporarily turn on -debug-only=block-freq"
This reverts commit r206705, as planned.

llvm-svn: 206706
2014-04-19 22:45:44 +00:00
Duncan P. N. Exon Smith bffee5bb90 blockfreq: Temporarily turn on -debug-only=block-freq
These tests fail after my BlockFrequencyInfo rewrite on two buildbots
[1][2].  I can't reproduce it locally, so I'm temporarily turning on
-debug-only=block-freq so I can find the problem.

[1]: http://bb.pgr.jp/builders/ninja-x64-msvc-RA-centos6/builds/1860
[2]: http://llvm-amd64.freebsd.your.org/b/builders/clang-i386-freebsd/builds/18477

llvm-svn: 206705
2014-04-19 22:40:56 +00:00
Duncan P. N. Exon Smith c812b5b33a Add some target triples for better determinism
These tests were failing on some buildbots after r206548 (reverted in
r206556), but passing locally.

They were missing target triples, so maybe that's the problem?

llvm-svn: 206621
2014-04-18 17:22:19 +00:00
Stephen Lin d24ab20e9b Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.
This update was done with the following bash script:

  find test/CodeGen -name "*.ll" | \
  while read NAME; do
    echo "$NAME"
    if ! grep -q "^; *RUN: *llc.*debug" $NAME; then
      TEMP=`mktemp -t temp`
      cp $NAME $TEMP
      sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \
      while read FUNC; do
        sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP
      done
      sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP
      sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP
      sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP
      sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP
      mv $TEMP $NAME
    fi
  done

llvm-svn: 186280
2013-07-14 06:24:09 +00:00
Benjamin Kramer e2a1d89e14 Switch spill weights from a basic loop depth estimation to BlockFrequencyInfo.
The main advantages here are way better heuristics, taking into account not
just loop depth but also __builtin_expect and other static heuristics and will
eventually learn how to use profile info. Most of the work in this patch is
pushing the MachineBlockFrequencyInfo analysis into the right places.

This is good for a 5% speedup on zlib's deflate (x86_64), there were some very
unfortunate spilling decisions in its hottest loop in longest_match(). Other
benchmarks I tried were mostly neutral.

This changes register allocation in subtle ways, update the tests for it.
2012-02-20-MachineCPBug.ll was deleted as it's very fragile and the instruction
it looked for was gone already (but the FileCheck pattern picked up unrelated
stuff).

llvm-svn: 184105
2013-06-17 19:00:36 +00:00
Preston Gurd 485296d1e8 Bypass Slow Divides
* Only apply divide bypass optimization when not optimizing for size. 
* Fixed bug caused by constant for 0 value of type Int32,
  used dividend type to generate the constant instead.
* For atom x86-64 apply the divide bypass to use 16-bit divides instead of
  64-bit divides when operand values are small enough.
* Added lit tests for 64-bit divide bypass.

Patch by Tyler Nowicki!

llvm-svn: 176442
2013-03-04 18:13:57 +00:00