[llvm-commits] [llvm] r41525 - /llvm/trunk/lib/Target/Mips/MipsMachineFunction.h
Bruno Cardoso Lopes
bruno.cardoso at gmail.com
Mon Aug 27 22:04:41 PDT 2007
Author: bruno
Date: Tue Aug 28 00:04:41 2007
New Revision: 41525
URL: http://llvm.org/viewvc/llvm-project?rev=41525&view=rev
Log:
Added methods to record SPOffsets from LowerFORMAL_ARGUMENTS
Modified:
llvm/trunk/lib/Target/Mips/MipsMachineFunction.h
Modified: llvm/trunk/lib/Target/Mips/MipsMachineFunction.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsMachineFunction.h?rev=41525&r1=41524&r2=41525&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsMachineFunction.h (original)
+++ llvm/trunk/lib/Target/Mips/MipsMachineFunction.h Tue Aug 28 00:04:41 2007
@@ -14,7 +14,9 @@
#ifndef MIPS_MACHINE_FUNCTION_INFO_H
#define MIPS_MACHINE_FUNCTION_INFO_H
+#include "llvm/ADT/VectorExtras.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
namespace llvm {
@@ -31,9 +33,34 @@
/// the Return Address must be saved
int RAStackOffset;
+ /// MipsFIHolder - Holds a FrameIndex and it's Stack Pointer Offset
+ struct MipsFIHolder {
+
+ int FI;
+ int SPOffset;
+
+ MipsFIHolder(int FrameIndex, int StackPointerOffset)
+ : FI(FrameIndex), SPOffset(StackPointerOffset) {}
+ };
+
+ // On LowerFORMAL_ARGUMENTS the stack size is unknown,
+ // so the Stack Pointer Offset calculation of "not in
+ // register arguments" must be postponed to emitPrologue.
+ SmallVector<MipsFIHolder, 16> FnLoadArgs;
+ bool HasLoadArgs;
+
+ // When VarArgs, we must write registers back to caller
+ // stack, preserving on register arguments. Since the
+ // stack size is unknown on LowerFORMAL_ARGUMENTS,
+ // the Stack Pointer Offset calculation must be
+ // postponed to emitPrologue.
+ SmallVector<MipsFIHolder, 4> FnStoreVarArgs;
+ bool HasStoreVarArgs;
+
public:
MipsFunctionInfo(MachineFunction& MF)
- : FPStackOffset(0), RAStackOffset(0)
+ : FPStackOffset(0), RAStackOffset(0),
+ HasLoadArgs(false), HasStoreVarArgs(false)
{}
int getFPStackOffset() const { return FPStackOffset; }
@@ -46,9 +73,32 @@
return (RAStackOffset > FPStackOffset) ?
(RAStackOffset) : (FPStackOffset);
}
+
+ bool hasLoadArgs() const { return HasLoadArgs; }
+ bool hasStoreVarArgs() const { return HasStoreVarArgs; }
+
+ void recordLoadArgsFI(int FI, int SPOffset) {
+ if (!HasLoadArgs) HasLoadArgs=true;
+ FnLoadArgs.push_back(MipsFIHolder(FI, SPOffset));
+ }
+ void recordStoreVarArgsFI(int FI, int SPOffset) {
+ if (!HasStoreVarArgs) HasStoreVarArgs=true;
+ FnStoreVarArgs.push_back(MipsFIHolder(FI, SPOffset));
+ }
+
+ void adjustLoadArgsFI(MachineFrameInfo *MFI) const {
+ if (!hasLoadArgs()) return;
+ for (unsigned i = 0, e = FnLoadArgs.size(); i != e; ++i)
+ MFI->setObjectOffset( FnLoadArgs[i].FI, FnLoadArgs[i].SPOffset );
+ }
+ void adjustStoreVarArgsFI(MachineFrameInfo *MFI) const {
+ if (!hasStoreVarArgs()) return;
+ for (unsigned i = 0, e = FnStoreVarArgs.size(); i != e; ++i)
+ MFI->setObjectOffset( FnStoreVarArgs[i].FI, FnStoreVarArgs[i].SPOffset );
+ }
+
};
} // end of namespace llvm
-
-#endif
+#endif // MIPS_MACHINE_FUNCTION_INFO_H
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