Commit Graph

7 Commits

Author SHA1 Message Date
Benjamin Kramer 8722aa5754 SLPVectorizer: When sorting by domination for CSE don't assert on unreachable code.
There is no total ordering if the CFG is disconnected. We don't care if we
catch all CSE opportunities in dead code either so just exclude ignore them in
the assert.

PR19646

llvm-svn: 208461
2014-05-09 23:28:49 +00:00
Stephen Lin c1c7a1309c Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.
This update was done with the following bash script:

  find test/Transforms -name "*.ll" | \
  while read NAME; do
    echo "$NAME"
    if ! grep -q "^; *RUN: *llc" $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
      mv $TEMP $NAME
    fi
  done

llvm-svn: 186268
2013-07-14 01:42:54 +00:00
Nadav Rotem 060be733a5 SLP Vectorizer: Add support for trees with external users.
To support this we have to insert 'extractelement' instructions to pick the right lane.
We had this functionality before but I removed it when we moved to the multi-block design because it was too complicated.

llvm-svn: 185230
2013-06-28 22:07:09 +00:00
Nadav Rotem 4c5b2d1de6 Erase all of the instructions that we RAUWed
llvm-svn: 184969
2013-06-26 17:16:09 +00:00
Nadav Rotem f4ca3994b8 Do not add cse-ed instructions into the visited map because we dont want to consider them as a candidate for replacement of instructions to be visited.
llvm-svn: 184966
2013-06-26 16:54:53 +00:00
Nadav Rotem 0323925d51 SLP Vectorizer: Fix a bug in the code that does CSE on the generated gather sequences.
Make sure that we don't replace and RAUW two sequences if one does not dominate the other.

llvm-svn: 184674
2013-06-23 21:57:27 +00:00
Nadav Rotem eb65e67eea SLP Vectorizer: Implement a simple CSE optimization for the gather sequences.
llvm-svn: 184660
2013-06-23 06:15:46 +00:00