[Hexagon] Improve handling of unaligned vector loads and stores
llvm-svn: 264584
diff --git a/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp b/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
index 7524439..f6ce321 100644
--- a/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
@@ -3019,6 +3019,32 @@
}
}
+bool HexagonTargetLowering::allowsMisalignedMemoryAccesses(EVT VT,
+ unsigned AS, unsigned Align, bool *Fast) const {
+ if (Fast)
+ *Fast = false;
+
+ switch (VT.getSimpleVT().SimpleTy) {
+ default:
+ return false;
+ case MVT::v64i8:
+ case MVT::v128i8:
+ case MVT::v256i8:
+ case MVT::v32i16:
+ case MVT::v64i16:
+ case MVT::v128i16:
+ case MVT::v16i32:
+ case MVT::v32i32:
+ case MVT::v64i32:
+ case MVT::v8i64:
+ case MVT::v16i64:
+ case MVT::v32i64:
+ return true;
+ }
+ return false;
+}
+
+
std::pair<const TargetRegisterClass*, uint8_t>
HexagonTargetLowering::findRepresentativeClass(const TargetRegisterInfo *TRI,
MVT VT) const {