Code moved out of lib/CodeGen/MachineFunction.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15835 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SparcV9/MachineFunctionInfo.cpp b/lib/Target/SparcV9/MachineFunctionInfo.cpp
new file mode 100644
index 0000000..eb66aa0
--- /dev/null
+++ b/lib/Target/SparcV9/MachineFunctionInfo.cpp
@@ -0,0 +1,180 @@
+//===-- MachineFunctionInfo.cpp -------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This implements the SparcV9 specific MachineFunctionInfo class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MachineFunctionInfo.h"
+#include "llvm/Instructions.h"
+#include "llvm/Function.h"
+#include "llvm/Type.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetFrameInfo.h"
+using namespace llvm;
+
+MachineFunctionInfo *MachineFunction::getInfo() const {
+ if (!MFInfo) {
+ MFInfo = new MachineFunctionInfo(*const_cast<MachineFunction*>(this));
+ }
+ return static_cast<MachineFunctionInfo*>(MFInfo);
+}
+
+
+
+static unsigned
+ComputeMaxOptionalArgsSize(const TargetMachine& target, const Function *F,
+ unsigned &maxOptionalNumArgs)
+{
+ unsigned maxSize = 0;
+
+ for (Function::const_iterator BB = F->begin(), BBE = F->end(); BB !=BBE; ++BB)
+ for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I)
+ if (const CallInst *callInst = dyn_cast<CallInst>(I))
+ {
+ unsigned numOperands = callInst->getNumOperands() - 1;
+ int numExtra = numOperands-6;
+ if (numExtra <= 0)
+ continue;
+
+ unsigned sizeForThisCall = numExtra * 8;
+
+ if (maxSize < sizeForThisCall)
+ maxSize = sizeForThisCall;
+
+ if ((int)maxOptionalNumArgs < numExtra)
+ maxOptionalNumArgs = (unsigned) numExtra;
+ }
+
+ return maxSize;
+}
+
+// Align data larger than one L1 cache line on L1 cache line boundaries.
+// Align all smaller data on the next higher 2^x boundary (4, 8, ...),
+// but not higher than the alignment of the largest type we support
+// (currently a double word). -- see class TargetData).
+//
+// This function is similar to the corresponding function in EmitAssembly.cpp
+// but they are unrelated. This one does not align at more than a
+// double-word boundary whereas that one might.
+//
+inline unsigned
+SizeToAlignment(unsigned size, const TargetMachine& target)
+{
+ const unsigned short cacheLineSize = 16;
+ if (size > (unsigned) cacheLineSize / 2)
+ return cacheLineSize;
+ else
+ for (unsigned sz=1; /*no condition*/; sz *= 2)
+ if (sz >= size || sz >= target.getTargetData().getDoubleAlignment())
+ return sz;
+}
+
+
+void MachineFunctionInfo::CalculateArgSize() {
+ maxOptionalArgsSize = ComputeMaxOptionalArgsSize(MF.getTarget(),
+ MF.getFunction(),
+ maxOptionalNumArgs);
+ staticStackSize = maxOptionalArgsSize + 176;
+}
+
+int
+MachineFunctionInfo::computeOffsetforLocalVar(const Value* val,
+ unsigned &getPaddedSize,
+ unsigned sizeToUse)
+{
+ if (sizeToUse == 0) {
+ // All integer types smaller than ints promote to 4 byte integers.
+ if (val->getType()->isIntegral() && val->getType()->getPrimitiveSize() < 4)
+ sizeToUse = 4;
+ else
+ sizeToUse = MF.getTarget().getTargetData().getTypeSize(val->getType());
+ }
+ unsigned align = SizeToAlignment(sizeToUse, MF.getTarget());
+
+ bool growUp;
+ int firstOffset = MF.getTarget().getFrameInfo()->getFirstAutomaticVarOffset(MF,
+ growUp);
+ int offset = growUp? firstOffset + getAutomaticVarsSize()
+ : firstOffset - (getAutomaticVarsSize() + sizeToUse);
+
+ int aligned = MF.getTarget().getFrameInfo()->adjustAlignment(offset, growUp, align);
+ getPaddedSize = sizeToUse + abs(aligned - offset);
+
+ return aligned;
+}
+
+
+int MachineFunctionInfo::allocateLocalVar(const Value* val,
+ unsigned sizeToUse) {
+ assert(! automaticVarsAreaFrozen &&
+ "Size of auto vars area has been used to compute an offset so "
+ "no more automatic vars should be allocated!");
+
+ // Check if we've allocated a stack slot for this value already
+ //
+ hash_map<const Value*, int>::const_iterator pair = offsets.find(val);
+ if (pair != offsets.end())
+ return pair->second;
+
+ unsigned getPaddedSize;
+ unsigned offset = computeOffsetforLocalVar(val, getPaddedSize, sizeToUse);
+ offsets[val] = offset;
+ incrementAutomaticVarsSize(getPaddedSize);
+ return offset;
+}
+
+int
+MachineFunctionInfo::allocateSpilledValue(const Type* type)
+{
+ assert(! spillsAreaFrozen &&
+ "Size of reg spills area has been used to compute an offset so "
+ "no more register spill slots should be allocated!");
+
+ unsigned size = MF.getTarget().getTargetData().getTypeSize(type);
+ unsigned char align = MF.getTarget().getTargetData().getTypeAlignment(type);
+
+ bool growUp;
+ int firstOffset = MF.getTarget().getFrameInfo()->getRegSpillAreaOffset(MF, growUp);
+
+ int offset = growUp? firstOffset + getRegSpillsSize()
+ : firstOffset - (getRegSpillsSize() + size);
+
+ int aligned = MF.getTarget().getFrameInfo()->adjustAlignment(offset, growUp, align);
+ size += abs(aligned - offset); // include alignment padding in size
+
+ incrementRegSpillsSize(size); // update size of reg. spills area
+
+ return aligned;
+}
+
+int
+MachineFunctionInfo::pushTempValue(unsigned size)
+{
+ unsigned align = SizeToAlignment(size, MF.getTarget());
+
+ bool growUp;
+ int firstOffset = MF.getTarget().getFrameInfo()->getTmpAreaOffset(MF, growUp);
+
+ int offset = growUp? firstOffset + currentTmpValuesSize
+ : firstOffset - (currentTmpValuesSize + size);
+
+ int aligned = MF.getTarget().getFrameInfo()->adjustAlignment(offset, growUp,
+ align);
+ size += abs(aligned - offset); // include alignment padding in size
+
+ incrementTmpAreaSize(size); // update "current" size of tmp area
+
+ return aligned;
+}
+
+void MachineFunctionInfo::popAllTempValues() {
+ resetTmpAreaSize(); // clear tmp area to reuse
+}