Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/lib/Target/ARM/Utils/ARMBaseInfo.cpp

@@ -0,0 +1,47 @@
+//===-- ARMBaseInfo.cpp - ARM Base encoding information------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides basic encoding and assembly information for ARM.
+//
+//===----------------------------------------------------------------------===//
+#include "ARMBaseInfo.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallVector.h"
+
+using namespace llvm;
+namespace llvm {
+namespace ARMSysReg {
+
+// lookup system register using 12-bit SYSm value.
+// Note: the search is uniqued using M1 mask
+const MClassSysReg *lookupMClassSysRegBy12bitSYSmValue(unsigned SYSm) {
+  return lookupMClassSysRegByM1Encoding12(SYSm);
+}
+
+// returns APSR with _<bits> qualifier.
+// Note: ARMv7-M deprecates using MSR APSR without a _<bits> qualifier
+const MClassSysReg *lookupMClassSysRegAPSRNonDeprecated(unsigned SYSm) {
+  return lookupMClassSysRegByM2M3Encoding8((1<<9)|(SYSm & 0xFF));
+}
+
+// lookup system registers using 8-bit SYSm value
+const MClassSysReg *lookupMClassSysRegBy8bitSYSmValue(unsigned SYSm) {
+  return ARMSysReg::lookupMClassSysRegByM2M3Encoding8((1<<8)|(SYSm & 0xFF));
+}
+
+#define GET_MCLASSSYSREG_IMPL
+#include "ARMGenSystemRegister.inc"
+
+} // end namespace ARMSysReg
+
+namespace ARMBankedReg {
+#define GET_BANKEDREG_IMPL
+#include "ARMGenSystemRegister.inc"
+} // end namespce ARMSysReg
+} // end namespace llvm