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llvm-mirror/test/Transforms/IndVarSimplify/ult-sub-to-eq.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

43 lines
1.5 KiB
LLVM

; RUN: opt -S -indvars < %s | FileCheck %s
define void @test1(float* nocapture %autoc, float* nocapture %data, float %d, i32 %data_len, i32 %sample) nounwind {
entry:
%sub = sub i32 %data_len, %sample
%cmp4 = icmp eq i32 %data_len, %sample
br i1 %cmp4, label %for.end, label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%0 = trunc i64 %indvars.iv to i32
%add = add i32 %0, %sample
%idxprom = zext i32 %add to i64
%arrayidx = getelementptr inbounds float* %data, i64 %idxprom
%1 = load float* %arrayidx, align 4
%mul = fmul float %1, %d
%arrayidx2 = getelementptr inbounds float* %autoc, i64 %indvars.iv
%2 = load float* %arrayidx2, align 4
%add3 = fadd float %2, %mul
store float %add3, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%3 = trunc i64 %indvars.iv.next to i32
%cmp = icmp ult i32 %3, %sub
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body, %entry
ret void
; CHECK-LABEL: @test1(
; First check that we move the sub into the preheader, it doesn't have to be
; executed if %cmp4 == false
; CHECK: for.body.preheader:
; CHECK: sub i32 %data_len, %sample
; CHECK: br label %for.body
; Second, check that we turn the IV test into an eq.
; CHECK: %lftr.wideiv = trunc i64 %indvars.iv.next to i32
; CHECK: %exitcond = icmp ne i32 %lftr.wideiv, %0
; CHECK: br i1 %exitcond, label %for.body, label %for.end.loopexit
}