llvm/test/Transforms/SCCP/atomic-load-store.ll
Stephen Lin 15bfd6d3ad Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change.
This conversion 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/;\(.*\)\([A-Za-z0-9_]*\):\( *\)define\([^@]*\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3define\4@$FUNC(/g" $TEMP
      done
      mv $TEMP $NAME
    fi
  done


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186269 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-14 01:50:49 +00:00

31 lines
658 B
LLVM

; RUN: opt < %s -ipsccp -S | FileCheck %s
; This transformation is safe for atomic loads and stores; check that it works.
@G = internal global i32 17
@C = internal constant i32 222
define i32 @test1() {
%V = load atomic i32* @G seq_cst, align 4
%C = icmp eq i32 %V, 17
br i1 %C, label %T, label %F
T:
store atomic i32 17, i32* @G seq_cst, align 4
ret i32 %V
F:
store atomic i32 123, i32* @G seq_cst, align 4
ret i32 0
}
; CHECK-LABEL: define i32 @test1(
; CHECK-NOT: store
; CHECK: ret i32 17
define i32 @test2() {
%V = load atomic i32* @C seq_cst, align 4
ret i32 %V
}
; CHECK-LABEL: define i32 @test2(
; CHECK-NOT: load
; CHECK: ret i32 222