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Commit Graph

5 Commits

Author SHA1 Message Date
Stephen Lin
cf082ae903 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
5848719c42 It is illegal to transform (sdiv (ashr X c1) c2) -> (sdiv x (2^c1 * c2)),
because C always rounds towards zero.

Thanks Dirk and Ben.

llvm-svn: 162899
2012-08-30 11:23:20 +00:00
Benjamin Kramer
bc139a63fc InstCombine: Guard the transform introduced in r162743 against large ints and non-const shifts.
llvm-svn: 162751
2012-08-28 13:08:13 +00:00
Nadav Rotem
d0cd39e7c9 Make sure that we don't call getZExtValue on values > 64 bits.
Thanks Benjamin for noticing this.

llvm-svn: 162749
2012-08-28 12:23:22 +00:00
Nadav Rotem
9582c96aef Teach InstCombine to canonicalize [SU]div+[AL]shl patterns.
For example:
  %1 = lshr i32 %x, 2
  %2 = udiv i32 %1, 100

rdar://12182093

llvm-svn: 162743
2012-08-28 10:01:43 +00:00