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llvm-mirror/test/CodeGen/AArch64/atomic-ops-not-barriers.ll
Stephen Lin 7e501cf4c3 Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.
This update was done with the following bash script:

  find test/CodeGen -name "*.ll" | \
  while read NAME; do
    echo "$NAME"
    if ! grep -q "^; *RUN: *llc.*debug" $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
      sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP
      sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP
      sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP
      sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP
      mv $TEMP $NAME
    fi
  done

llvm-svn: 186280
2013-07-14 06:24:09 +00:00

27 lines
839 B
LLVM

; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs < %s | FileCheck %s
define i32 @foo(i32* %var, i1 %cond) {
; CHECK-LABEL: foo:
br i1 %cond, label %atomic_ver, label %simple_ver
simple_ver:
%oldval = load i32* %var
%newval = add nsw i32 %oldval, -1
store i32 %newval, i32* %var
br label %somewhere
atomic_ver:
fence seq_cst
%val = atomicrmw add i32* %var, i32 -1 monotonic
fence seq_cst
br label %somewhere
; CHECK: dmb
; CHECK: ldxr
; CHECK: dmb
; The key point here is that the second dmb isn't immediately followed by the
; simple_ver basic block, which LLVM attempted to do when DMB had been marked
; with isBarrier. For now, look for something that looks like "somewhere".
; CHECK-NEXT: mov
somewhere:
%combined = phi i32 [ %val, %atomic_ver ], [ %newval, %simple_ver]
ret i32 %combined
}