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Go back to allocating memory for each constant separately. Since SPARCs do not

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allow unaligned loads, that is probably the problem I've been seeing in numerous
SPARC test cases failing. X86, on the other hand, just slows down unaligned
accesses, since it must make 2 aligned accesses for each unaligned one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10266 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2003-11-30 00:50:53 +00:00
parent 043b9722f5
commit 91de352796
1 changed files with 5 additions and 20 deletions
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25
lib/ExecutionEngine/JIT/JITEmitter.cpp
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@ -187,28 +187,13 @@ void Emitter::finishFunction(MachineFunction &F) {
void Emitter::emitConstantPool(MachineConstantPool *MCP) {
const std::vector<Constant*> &Constants = MCP->getConstants();
if (Constants.size() == 0) return;
std::vector<unsigned> ConstantSizes;
unsigned TotalSize = 0;
// Calculate how much space we will need for all the constants
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
// For now we just allocate some memory on the heap, this can be
// dramatically improved.
const Type *Ty = ((Value*)Constants[i])->getType();
unsigned TySize = TheVM->getTargetData().getTypeSize(Ty);
ConstantSizes.push_back(TySize);
TotalSize += TySize;
}
// Allocate a 'pool' of memory just once
void *ConstPool = malloc(TotalSize);
if (!ConstPool) {
perror("malloc");
abort();
}
// Initialize each slot in the 'pool' appropriately
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
TheVM->InitializeMemory(Constants[i], ConstPool);
ConstantPoolAddresses.push_back(ConstPool);
ConstPool = (void*) ((intptr_t)ConstPool + ConstantSizes[i]);
void *Addr = malloc(TheVM->getTargetData().getTypeSize(Ty));
TheVM->InitializeMemory(Constants[i], Addr);
ConstantPoolAddresses.push_back(Addr);
}
}