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llvm-project/llvm/test/Transforms/InstSimplify/rem.ll

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Move some rem transforms out of instcombine and into instsimplify. This automagically provides a transform noticed by my super-optimizer as occurring quite often: "rem x, (select cond, x, 1)" -> 0. llvm-svn: 130694
2011-05-03 00:27:02 +08:00
; RUN: opt < %s -instsimplify -S | FileCheck %s
define i32 @select1(i32 %x, i1 %b) {
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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @select1(
Move some rem transforms out of instcombine and into instsimplify. This automagically provides a transform noticed by my super-optimizer as occurring quite often: "rem x, (select cond, x, 1)" -> 0. llvm-svn: 130694
2011-05-03 00:27:02 +08:00
%rhs = select i1 %b, i32 %x, i32 1
%rem = srem i32 %x, %rhs
ret i32 %rem
; CHECK: ret i32 0
}
define i32 @select2(i32 %x, i1 %b) {
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 09:42:54 +08:00
; CHECK-LABEL: @select2(
Move some rem transforms out of instcombine and into instsimplify. This automagically provides a transform noticed by my super-optimizer as occurring quite often: "rem x, (select cond, x, 1)" -> 0. llvm-svn: 130694
2011-05-03 00:27:02 +08:00
%rhs = select i1 %b, i32 %x, i32 1
%rem = urem i32 %x, %rhs
ret i32 %rem
; CHECK: ret i32 0
}