Add a command line option "-arm-strict-align" to disallow unaligned memory
accesses for ARM targets that would otherwise allow it. Radar 8465431.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114941 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 4c1e7af..d084397 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -4807,15 +4807,7 @@
}
bool ARMTargetLowering::allowsUnalignedMemoryAccesses(EVT VT) const {
- if (!Subtarget->hasV6Ops())
- // Pre-v6 does not support unaligned mem access.
- return false;
-
- // v6+ may or may not support unaligned mem access depending on the system
- // configuration.
- // FIXME: This is pretty conservative. Should we provide cmdline option to
- // control the behaviour?
- if (!Subtarget->isTargetDarwin())
+ if (!Subtarget->allowsUnalignedMem())
return false;
switch (VT.getSimpleVT().SimpleTy) {