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All targets are now allowed to have their own MachineFunctionInfo objects,

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also, make getInfo do some checking and cast to the appropriate concrete type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15903 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-08-18 18:13:16 +00:00
parent b406d84dd8
commit 8bdf87d1d8
1 changed files with 24 additions and 12 deletions
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36
include/llvm/CodeGen/MachineFunction.h
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@@ -23,6 +23,12 @@
namespace llvm { namespace llvm {
class Function;
class TargetMachine;
class SSARegMap;
class MachineFrameInfo;
class MachineConstantPool;
// ilist_traits // ilist_traits
template <> template <>
class ilist_traits<MachineBasicBlock> { class ilist_traits<MachineBasicBlock> {
@@ -58,15 +64,13 @@ public:
ilist_iterator<MachineBasicBlock> last); ilist_iterator<MachineBasicBlock> last);
}; };
/// MachineFunctionInfo - This class can be derived from and used by targets to
class Function; /// hold private target-specific information for each MachineFunction. Objects
class TargetMachine; /// of type are accessed/created with MF::getInfo and destroyed when the
class SSARegMap; /// MachineFunction is destroyed.
class MachineFrameInfo; struct MachineFunctionInfo {
class MachineConstantPool; virtual ~MachineFunctionInfo() {};
// MachineFunctionInfoBase - This is a gross SparcV9 hack };
struct MachineFunctionInfoBase { virtual ~MachineFunctionInfoBase() {}; };
class MachineFunctionInfo;
class MachineFunction : private Annotation { class MachineFunction : private Annotation {
const Function *Fn; const Function *Fn;
@@ -78,8 +82,9 @@ class MachineFunction : private Annotation {
// Keeping track of mapping from SSA values to registers // Keeping track of mapping from SSA values to registers
SSARegMap *SSARegMapping; SSARegMap *SSARegMapping;
// Used to keep track of frame and constant area information for SparcV9 BE. // Used to keep track of target-specific per-machine function information for
mutable MachineFunctionInfoBase *MFInfo; // the target implementation.
MachineFunctionInfo *MFInfo;
// Keep track of objects allocated on the stack. // Keep track of objects allocated on the stack.
MachineFrameInfo *FrameInfo; MachineFrameInfo *FrameInfo;
@@ -124,7 +129,14 @@ public:
/// MachineFunctionInfo - Keep track of various per-function pieces of /// MachineFunctionInfo - Keep track of various per-function pieces of
/// information for the sparc backend. /// information for the sparc backend.
/// ///
MachineFunctionInfo *getInfo() const; template<typename Ty>
Ty *getInfo() {
if (!MFInfo) MFInfo = new Ty(*this);
assert((void*)dynamic_cast<Ty*>(MFInfo) == (void*)MFInfo &&
"Invalid concrete type or multiple inheritence for getInfo");
return static_cast<Ty*>(MFInfo);
}
/// getBlockNumbered - MachineBasicBlocks are automatically numbered when they /// getBlockNumbered - MachineBasicBlocks are automatically numbered when they
/// are inserted into the machine function. The block number for a machine /// are inserted into the machine function. The block number for a machine