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Modify AllocateLocalVar method to take a size argument.

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llvm-svn: 1318
This commit is contained in:
Vikram S. Adve 2001-11-15 15:22:26 +00:00
parent 897fbc8db8
commit bcd2ba2fea
1 changed files with 29 additions and 3 deletions
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32
lib/CodeGen/MachineInstr.cpp
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@ -16,6 +16,7 @@
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/Target/MachineFrameInfo.h"
#include "llvm/Target/MachineRegInfo.h"
#include "llvm/Target/MachineCacheInfo.h"
#include "llvm/Method.h"
#include "llvm/iOther.h"
#include "llvm/Instruction.h"
@ -192,6 +193,24 @@ operator<<(ostream &os, const MachineOperand &mop)
return os;
}
// 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, ...).
//
// THIS FUNCTION HAS BEEN COPIED FROM EMITASSEMBLY.CPP AND
// SHOULD BE USED DIRECTLY THERE
//
inline unsigned int
SizeToAlignment(unsigned int size, const TargetMachine& target)
{
unsigned short cacheLineSize = target.getCacheInfo().getCacheLineSize(1);
if (size > (unsigned) cacheLineSize / 2)
return cacheLineSize;
else
for (unsigned sz=1; /*no condition*/; sz *= 2)
if (sz >= size)
return sz;
}
static unsigned int
ComputeMaxOptionalArgsSize(const TargetMachine& target, const Method* method)
{
@ -248,7 +267,8 @@ MachineCodeForMethod::MachineCodeForMethod(const Method* _M,
int
MachineCodeForMethod::allocateLocalVar(const TargetMachine& target,
const Value* val)
const Value* val,
unsigned int size)
{
// Check if we've allocated a stack slot for this value already
//
@ -258,9 +278,15 @@ MachineCodeForMethod::allocateLocalVar(const TargetMachine& target,
bool growUp;
int firstOffset =target.getFrameInfo().getFirstAutomaticVarOffset(*this,
growUp);
unsigned int size = target.findOptimalStorageSize(val->getType());
unsigned char align = target.DataLayout.getTypeAlignment(val->getType());
unsigned char align;
if (size == 0)
{
size = target.findOptimalStorageSize(val->getType());
// align = target.DataLayout.getTypeAlignment(val->getType());
}
align = SizeToAlignment(size, target);
offset = getAutomaticVarsSize();
if (! growUp)
offset += size;