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When eliminating a pair of
`llvm.objc.autoreleaseReturnValue`
followed by
`llvm.objc.retainAutoreleasedReturnValue`
we need to make sure that the instructions in between are safe to
ignore.
Other than bitcasts and useless GEPs, it's also safe to ignore lifetime
markers for both static allocas (lifetime.start/lifetime.end) and dynamic
allocas (stacksave/stackrestore).
These get added by the inliner as part of the return sequence and can
prevent the transformation from happening in practice.
Differential Revision: https://reviews.llvm.org/D69833
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Add tests for bitcasts + zero GEPs, and pre-commit tests for lifetime
markers.
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The reversion apparently deleted the test/Transforms directory.
Will be re-reverting again.
llvm-svn: 358552
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As it's causing some bot failures (and per request from kbarton).
This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.
llvm-svn: 358546
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We're moving ARC optimisation and ARC emission in clang away from runtime methods
and towards intrinsics. This is the part which actually uses the intrinsics in the ARC
optimizer when both analyzing the existing calls and emitting new ones.
Differential Revision: https://reviews.llvm.org/D55348
Reviewers: ahatanak
llvm-svn: 349534
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easier debugging. No functionality change.
This conversion 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/;\(.*\)\([A-Za-z0-9_]*\):\( *\)define\([^@]*\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3define\4@$FUNC(/g" $TEMP
done
mv $TEMP $NAME
fi
done
llvm-svn: 186269
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llvm-svn: 133108
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