Don't attempt preserving conservative kill flags. We were doing it wrong.

This is before LiveVariables anyway, where these kill flags are recalculated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106157 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/NEONPreAllocPass.cpp b/lib/Target/ARM/NEONPreAllocPass.cpp
index 2fcb3279407957573f3362b73e6f3f44ad8c1bfe..fa69f1acb6c05aefe749f87e9fa71bcda3859933 100644 (file)
--- a/lib/Target/ARM/NEONPreAllocPass.cpp
+++ b/lib/Target/ARM/NEONPreAllocPass.cpp
@@ -448,8 +448,7 @@ NEONPreAllocPass::FormsRegSequence(MachineInstr *MI,
     assert(DefMI->isExtractSubreg());
     MO.setReg(LastSrcReg);
     MO.setSubReg(SubIds[R]);
-    if (R != 0)
-      MO.setIsKill(false);
+    MO.setIsKill(false);
     // Delete the EXTRACT_SUBREG if its result is now dead.
     if (MRI->use_empty(OldReg))
       DefMI->eraseFromParent();