llvm/test/Transforms/DeadStoreElimination/const-pointers.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

40 lines
801 B
LLVM

; RUN: opt -basicaa -dse -S < %s | FileCheck %s
%t = type { i32 }
@g = global i32 42
define void @test1(%t* noalias %pp) {
%p = getelementptr inbounds %t* %pp, i32 0, i32 0
store i32 1, i32* %p; <-- This is dead
%x = load i32* inttoptr (i32 12345 to i32*)
store i32 %x, i32* %p
ret void
; CHECK-LABEL: define void @test1(
; CHECK: store
; CHECK-NOT: store
; CHECK: ret void
}
define void @test3() {
store i32 1, i32* @g; <-- This is dead.
store i32 42, i32* @g
ret void
; CHECK-LABEL: define void @test3(
; CHECK: store
; CHECK-NOT: store
; CHECK: ret void
}
define void @test4(i32* %p) {
store i32 1, i32* %p
%x = load i32* @g; <-- %p and @g could alias
store i32 %x, i32* %p
ret void
; CHECK-LABEL: define void @test4(
; CHECK: store
; CHECK: store
; CHECK: ret void
}