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llvm-mirror/test/Transforms/LoopStrengthReduce/X86/2011-07-20-DoubleIV.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

44 lines
1015 B
LLVM

; RUN: opt < %s -loop-reduce -S -mtriple=x86_64-unknown-unknown | FileCheck %s
;
; Test LSR's OptimizeShadowIV. Handle a floating-point IV with a
; nonzero initial value.
; rdar://9786536
; First, make sure LSR doesn't crash on an empty IVUsers list.
; CHECK-LABEL: @dummyIV(
; CHECK-NOT: phi
; CHECK-NOT: sitofp
; CHECK: br
define void @dummyIV() nounwind {
entry:
br label %loop
loop:
%i.01 = phi i32 [ -39, %entry ], [ %inc, %loop ]
%conv = sitofp i32 %i.01 to double
%inc = add nsw i32 %i.01, 1
br i1 undef, label %loop, label %for.end
for.end:
unreachable
}
; Now check that the computed double constant is correct.
; CHECK-LABEL: @doubleIV(
; CHECK: phi double [ -3.900000e+01, %entry ]
; CHECK: br
define void @doubleIV() nounwind {
entry:
br label %loop
loop:
%i.01 = phi i32 [ -39, %entry ], [ %inc, %loop ]
%conv = sitofp i32 %i.01 to double
%div = fdiv double %conv, 4.000000e+01
%inc = add nsw i32 %i.01, 1
br i1 undef, label %loop, label %for.end
for.end:
unreachable
}