Adding simple cast cost to ARM
Changing ARMBaseTargetMachine to return ARMTargetLowering intead of
the generic one (similar to x86 code).
Tests showing which instructions were added to cast when necessary
or cost zero when not. Downcast to 16 bits are not lowered in NEON,
so costs are not there yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173849 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMTargetMachine.h b/lib/Target/ARM/ARMTargetMachine.h
index be6bec7..d4caf5c 100644
--- a/lib/Target/ARM/ARMTargetMachine.h
+++ b/lib/Target/ARM/ARMTargetMachine.h
@@ -46,6 +46,10 @@
virtual ARMJITInfo *getJITInfo() { return &JITInfo; }
virtual const ARMSubtarget *getSubtargetImpl() const { return &Subtarget; }
+ virtual const ARMTargetLowering *getTargetLowering() const {
+ // Implemented by derived classes
+ llvm_unreachable("getTargetLowering not implemented");
+ }
virtual const InstrItineraryData *getInstrItineraryData() const {
return &InstrItins;
}