Refactor isThumb1Only() && isMClass() into a predicate called isV6M()
This must be enforced for all v6M cores, not just the cortex-m0,
irregardless of the user-specified alignment.
Patch by Charlie Turner.
llvm-svn: 219300
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.cpp b/llvm/lib/Target/ARM/ARMSubtarget.cpp
index 5d052c0..a26fba1 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.cpp
+++ b/llvm/lib/Target/ARM/ARMSubtarget.cpp
@@ -310,15 +310,14 @@
(hasV7Ops() && (isTargetLinux() || isTargetNaCl() ||
isTargetNetBSD())) ||
(hasV6Ops() && (isTargetMachO() || isTargetNetBSD()));
- // The one exception is cortex-m0, which despite being v6, does not
- // support unaligned accesses. Rather than make the above boolean
- // expression even more obtuse, just override the value here.
- if (isThumb1Only() && isMClass())
- AllowsUnalignedMem = false;
} else {
AllowsUnalignedMem = !(Align == StrictAlign);
}
+ // No v6M core supports unaligned memory access (v6M ARM ARM A3.2)
+ if (isV6M())
+ AllowsUnalignedMem = false;
+
switch (IT) {
case DefaultIT:
RestrictIT = hasV8Ops() ? true : false;