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llvm-mirror/test/Transforms/LoopVectorize/no_idiv_reduction.ll
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

25 lines
806 B
LLVM

; RUN: opt -loop-vectorize -force-vector-width=2 -force-vector-unroll=1 -S < %s | FileCheck %s
@a = common global [128 x i32] zeroinitializer, align 16
;; Must not vectorize division reduction. Division is lossy.
define i32 @g() {
entry:
br label %for.body
for.body:
; CHECK-LABEL: @g(
; CHECK-NOT: sdiv <2 x i32>
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%r.05 = phi i32 [ 80, %entry ], [ %div, %for.body ]
%arrayidx = getelementptr inbounds [128 x i32]* @a, i64 0, i64 %indvars.iv
%0 = load i32* %arrayidx, align 4
%div = sdiv i32 %r.05, %0
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret i32 %div
}