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add an API so target-independent codegen can determine if a constant

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pool entry will require relocations against it.  I implemented this
conservatively for ARM, someone who is knowledgable about it should
see if this can be improved.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76678 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-07-21 23:34:23 +00:00
parent ce9fe9fae5
commit cb45963643
3 changed files with 55 additions and 2 deletions
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21
lib/CodeGen/MachineFunction.cpp
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@ -539,10 +539,29 @@ void MachineJumpTableInfo::dump() const { print(*cerr.stream()); }
const Type *MachineConstantPoolEntry::getType() const {
if (isMachineConstantPoolEntry())
return Val.MachineCPVal->getType();
return Val.MachineCPVal->getType();
return Val.ConstVal->getType();
}
unsigned MachineConstantPoolEntry::getRelocatationInfo() const {
if (isMachineConstantPoolEntry())
return Val.MachineCPVal->getRelocatationInfo();
// FIXME: This API sucks.
// If no relocations, return 0.
if (!Val.ConstVal->ContainsRelocations())
return 0;
// If it contains no global relocations, return 1.
if (!Val.ConstVal->ContainsRelocations(Reloc::Global))
return 1;
// Otherwise, it has general relocations.
return 2;
}
MachineConstantPool::~MachineConstantPool() {
for (unsigned i = 0, e = Constants.size(); i != e; ++i)
if (Constants[i].isMachineConstantPoolEntry())