Oat compiler integration snapshot.
Cleanly compiles, but not integrated. Old-world dependencies captured
in hacked-up temporary files "Dalvik.h" and "HackStubs.cc".
Dalvik.h is a placeholder that captures all of the constants, struct
definitions and inline functions the compiler needs. It largely consists
of declaration fragments of libdex, Object.h, DvmDex.h and Thread.h.
HackStubs.cc contains empty shells for some required libdex routines.
Change-Id: Ia479dda41da4e3162ff6df383252fdc7dbf38d71
diff --git a/src/compiler/codegen/Ralloc.h b/src/compiler/codegen/Ralloc.h
new file mode 100644
index 0000000..12e5f13
--- /dev/null
+++ b/src/compiler/codegen/Ralloc.h
@@ -0,0 +1,239 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_SRC_COMPILER_RALLOC_H_
+#define ART_SRC_COMPILER_RALLOC_H_
+/*
+ * This file contains target independent register alloction support.
+ */
+
+#include "../CompilerUtility.h"
+#include "../CompilerIR.h"
+#include "../Dataflow.h"
+#include "arm/ArmLIR.h"
+
+/*
+ * Return most flexible allowed register class based on size.
+ * Bug: 2813841
+ * Must use a core register for data types narrower than word (due
+ * to possible unaligned load/store.
+ */
+static inline RegisterClass oatRegClassBySize(OpSize size)
+{
+ return (size == kUnsignedHalf ||
+ size == kSignedHalf ||
+ size == kUnsignedByte ||
+ size == kSignedByte ) ? kCoreReg : kAnyReg;
+}
+
+static inline int oatS2VReg(CompilationUnit* cUnit, int sReg)
+{
+ assert(sReg != INVALID_SREG);
+ return DECODE_REG(oatConvertSSARegToDalvik(cUnit, sReg));
+}
+
+/* Reset the tracker to unknown state */
+static inline void oatResetNullCheck(CompilationUnit* cUnit)
+{
+ oatClearAllBits(cUnit->regPool->nullCheckedRegs);
+}
+
+/*
+ * Get the "real" sreg number associated with an sReg slot. In general,
+ * sReg values passed through codegen are the SSA names created by
+ * dataflow analysis and refer to slot numbers in the cUnit->regLocation
+ * array. However, renaming is accomplished by simply replacing RegLocation
+ * entries in the cUnit->reglocation[] array. Therefore, when location
+ * records for operands are first created, we need to ask the locRecord
+ * identified by the dataflow pass what it's new name is.
+ */
+
+static inline int oatSRegHi(int lowSreg) {
+ return (lowSreg == INVALID_SREG) ? INVALID_SREG : lowSreg + 1;
+}
+
+
+static inline bool oatLiveOut(CompilationUnit* cUnit, int sReg)
+{
+ //For now.
+ return true;
+}
+
+static inline int oatSSASrc(MIR* mir, int num)
+{
+ assert(mir->ssaRep->numUses > num);
+ return mir->ssaRep->uses[num];
+}
+
+extern RegLocation oatEvalLoc(CompilationUnit* cUnit, RegLocation loc,
+ int regClass, bool update);
+/* Mark a temp register as dead. Does not affect allocation state. */
+extern void oatClobber(CompilationUnit* cUnit, int reg);
+
+extern RegLocation oatUpdateLoc(CompilationUnit* cUnit,
+ RegLocation loc);
+
+/* see comments for updateLoc */
+extern RegLocation oatUpdateLocWide(CompilationUnit* cUnit,
+ RegLocation loc);
+
+/* Clobber all of the temps that might be used by a handler. */
+extern void oatClobberHandlerRegs(CompilationUnit* cUnit);
+
+extern void oatMarkLive(CompilationUnit* cUnit, int reg, int sReg);
+
+extern void oatMarkTemp(CompilationUnit* cUnit, int reg);
+
+extern void oatMarkDirty(CompilationUnit* cUnit, RegLocation loc);
+
+extern void oatMarkPair(CompilationUnit* cUnit, int lowReg,
+ int highReg);
+
+extern void oatMarkClean(CompilationUnit* cUnit, RegLocation loc);
+
+extern void oatResetDef(CompilationUnit* cUnit, int reg);
+
+extern void oatResetDefLoc(CompilationUnit* cUnit, RegLocation rl);
+
+/* Set up temp & preserved register pools specialized by target */
+extern void oatInitPool(RegisterInfo* regs, int* regNums, int num);
+
+/*
+ * Mark the beginning and end LIR of a def sequence. Note that
+ * on entry start points to the LIR prior to the beginning of the
+ * sequence.
+ */
+extern void oatMarkDef(CompilationUnit* cUnit, RegLocation rl,
+ LIR* start, LIR* finish);
+/*
+ * Mark the beginning and end LIR of a def sequence. Note that
+ * on entry start points to the LIR prior to the beginning of the
+ * sequence.
+ */
+extern void oatMarkDefWide(CompilationUnit* cUnit, RegLocation rl,
+ LIR* start, LIR* finish);
+
+extern RegLocation oatGetSrcWide(CompilationUnit* cUnit, MIR* mir,
+ int low, int high);
+
+extern RegLocation oatGetDestWide(CompilationUnit* cUnit, MIR* mir,
+ int low, int high);
+// Get the LocRecord associated with an SSA name use.
+extern RegLocation oatGetSrc(CompilationUnit* cUnit, MIR* mir, int num);
+
+// Get the LocRecord associated with an SSA name def.
+extern RegLocation oatGetDest(CompilationUnit* cUnit, MIR* mir, int num);
+
+extern RegLocation oatGetReturnWide(CompilationUnit* cUnit);
+
+/* Clobber all regs that might be used by an external C call */
+extern void oatClobberCallRegs(CompilationUnit* cUnit);
+
+extern RegisterInfo *oatIsTemp(CompilationUnit* cUnit, int reg);
+
+extern bool oatIsDirty(CompilationUnit* cUnit, int reg);
+
+extern void oatMarkInUse(CompilationUnit* cUnit, int reg);
+
+extern int oatAllocTemp(CompilationUnit* cUnit);
+
+extern int oatAllocTempFloat(CompilationUnit* cUnit);
+
+//REDO: too many assumptions.
+extern int oatAllocTempDouble(CompilationUnit* cUnit);
+
+extern void oatFreeTemp(CompilationUnit* cUnit, int reg);
+
+extern void oatResetDefLocWide(CompilationUnit* cUnit, RegLocation rl);
+
+extern void oatResetDefTracking(CompilationUnit* cUnit);
+
+/* Kill the corresponding bit in the null-checked register list */
+extern void oatKillNullCheckedLoc(CompilationUnit* cUnit,
+ RegLocation loc);
+
+//FIXME - this needs to also check the preserved pool.
+extern RegisterInfo *oatIsLive(CompilationUnit* cUnit, int reg);
+
+/* To be used when explicitly managing register use */
+extern void oatLockAllTemps(CompilationUnit* cUnit);
+
+extern void oatFlushAllRegs(CompilationUnit* cUnit);
+
+extern RegLocation oatGetReturnWideAlt(CompilationUnit* cUnit);
+
+extern RegLocation oatGetReturn(CompilationUnit* cUnit);
+
+extern RegLocation oatGetReturnAlt(CompilationUnit* cUnit);
+
+/* Clobber any temp associated with an sReg. Could be in either class */
+extern void oatClobberSReg(CompilationUnit* cUnit, int sReg);
+
+/* Return a temp if one is available, -1 otherwise */
+extern int oatAllocFreeTemp(CompilationUnit* cUnit);
+
+/* Attempt to allocate a callee-save register */
+extern int oatAllocPreservedCoreReg(CompilationUnit* cUnit, int sreg);
+extern int oatAllocPreservedFPReg(CompilationUnit* cUnit, int sReg,
+ bool doubleStart);
+
+/*
+ * Similar to oatAllocTemp(), but forces the allocation of a specific
+ * register. No check is made to see if the register was previously
+ * allocated. Use with caution.
+ */
+extern void oatLockTemp(CompilationUnit* cUnit, int reg);
+
+extern RegLocation oatWideToNarrow(CompilationUnit* cUnit,
+ RegLocation rl);
+
+/*
+ * Free all allocated temps in the temp pools. Note that this does
+ * not affect the "liveness" of a temp register, which will stay
+ * live until it is either explicitly killed or reallocated.
+ */
+extern void oatResetRegPool(CompilationUnit* cUnit);
+
+extern void oatClobberAllRegs(CompilationUnit* cUnit);
+
+extern void oatFlushRegWide(CompilationUnit* cUnit, int reg1, int reg2);
+
+extern void oatFlushReg(CompilationUnit* cUnit, int reg);
+
+/*
+ * Architecture-dependent register allocation routines implemented in
+ * ${TARGET_ARCH}/${TARGET_ARCH_VARIANT}/Ralloc.c
+ */
+extern int oatAllocTypedTempPair(CompilationUnit* cUnit,
+ bool fpHint, int regClass);
+
+extern int oatAllocTypedTemp(CompilationUnit* cUnit, bool fpHint,
+ int regClass);
+
+extern ArmLIR* oatRegCopy(CompilationUnit* cUnit, int rDest, int rSrc);
+
+extern void oatRegCopyWide(CompilationUnit* cUnit, int destLo,
+ int destHi, int srcLo, int srcHi);
+
+extern void oatFlushRegImpl(CompilationUnit* cUnit, int rBase,
+ int displacement, int rSrc, OpSize size);
+
+extern void oatFlushRegWideImpl(CompilationUnit* cUnit, int rBase,
+ int displacement, int rSrcLo, int rSrcHi);
+
+extern void oatDoPromotion(CompilationUnit* cUnit);
+extern int oatVRegOffset(CompilationUnit* cUnit, int reg);
+#endif // ART_SRC_COMPILER_RALLOC_H_