4 Commits

Author	SHA1	Message	Date
Mehdi Amini	cd3ca6f7dd	InstSimplify: simplify 0 / X if nnan and nsz ... From: Fiona Glaser <fglaser@apple.com> llvm-svn: 230238	2015-02-23 18:30:25 +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
Michael Ilseman	bb6f691b01	Added a slew of SimplifyInstruction floating-point optimizations, many of which take advantage of fast-math flags. Test cases included. ... fsub X, +0 ==> X fsub X, -0 ==> X, when we know X is not -0 fsub +/-0.0, (fsub -0.0, X) ==> X fsub nsz +/-0.0, (fsub +/-0.0, X) ==> X fsub nnan ninf X, X ==> 0.0 fadd nsz X, 0 ==> X fadd [nnan ninf] X, (fsub [nnan ninf] 0, X) ==> 0 where nnan and ninf have to occur at least once somewhere in this expression fmul X, 1.0 ==> X llvm-svn: 169940	2012-12-12 00:27:46 +00:00
Michael Ilseman	6cdacff2d0	Fast-math test for SimplifyInstruction: fold multiply by 0 ... Applied the patch, rather than committing it. llvm-svn: 168656	2012-11-27 01:00:22 +00:00