Emit banksel and movlp instructions.
Split large global data (both initialized and un-initialized) into multiple sections of <= 80 bytes.
Provide routines to manage PIC16 ABI naming conventions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71073 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16.h b/lib/Target/PIC16/PIC16.h
index 42bd7bc..330bed8 100644
--- a/lib/Target/PIC16/PIC16.h
+++ b/lib/Target/PIC16/PIC16.h
@@ -18,6 +18,7 @@
#include "llvm/Target/TargetMachine.h"
#include <iosfwd>
#include <cassert>
+#include <string>
namespace llvm {
class PIC16TargetMachine;
@@ -39,6 +40,94 @@
UGE
};
}
+ // A Central object to manage all ABI naming conventions.
+ class PIC16ABINames {
+ public:
+ // Map the name of the symbol to its section name.
+ // Current ABI:
+ // ------------------------------------------------------
+ // Global variables do not have any '.' in their names.
+ // they are prefixed with @
+ // These are maily function names and global variable names.
+ // -------------------------------------------------------
+ // Functions and auto variables.
+ // Names are mangled as <prefix><funcname>.<id>.<varname>
+ // Where prefix is a special char '@' and id is any one of
+ // the following
+ // .auto. - an automatic var of a function.
+ // .temp. - temproray data of a function.
+ // .ret. - return value label for a function.
+ // .frame. - Frame label for a function where retval, args
+ // and temps are stored.
+ // .args. - Label used to pass arguments to a direct call.
+ // Example - Function name: @foo
+ // Its frame: @foo.frame.
+ // Its retval: @foo.ret.
+ // Its local vars: @foo.auto.a
+ // Its temp data: @foo.temp.
+ // Its arg passing: @foo.args.
+ //----------------------------------------------
+ // Libcall - compiler generated libcall names must have a .lib.
+ // This id will be used to emit extern decls for libcalls.
+ // Example - libcall name: @sra_i8.lib.
+ // To pass args: @sra_i8.args.
+ // To return val: @sra_i8.ret.
+ //----------------------------------------------
+
+ enum IDs {
+ PREFIX_SYMBOL,
+
+ FUNC_AUTOS,
+ FUNC_FRAME,
+ FUNC_RET,
+ FUNC_ARGS,
+ FUNC_TEMPS,
+
+ LIBCALL,
+
+ FRAME_SECTION,
+ AUTOS_SECTION
+ };
+
+ };
+
+ inline static const char *getIDName(PIC16ABINames::IDs id) {
+ switch (id) {
+ default: assert(0 && "Unknown id");
+ case PIC16ABINames::PREFIX_SYMBOL: return "@";
+ case PIC16ABINames::FUNC_AUTOS: return ".auto.";
+ case PIC16ABINames::FUNC_FRAME: return ".frame.";
+ case PIC16ABINames::FUNC_TEMPS: return ".temp.";
+ case PIC16ABINames::FUNC_ARGS: return ".args.";
+ case PIC16ABINames::FUNC_RET: return ".ret.";
+ case PIC16ABINames::FRAME_SECTION: return "fpdata";
+ case PIC16ABINames::AUTOS_SECTION: return "fadata";
+ }
+ }
+
+ inline static PIC16ABINames::IDs getID(const std::string &Sym) {
+ if (Sym.find(getIDName(PIC16ABINames::FUNC_TEMPS)))
+ return PIC16ABINames::FUNC_TEMPS;
+
+ if (Sym.find(getIDName(PIC16ABINames::FUNC_FRAME)))
+ return PIC16ABINames::FUNC_FRAME;
+
+ if (Sym.find(getIDName(PIC16ABINames::FUNC_RET)))
+ return PIC16ABINames::FUNC_RET;
+
+ if (Sym.find(getIDName(PIC16ABINames::FUNC_ARGS)))
+ return PIC16ABINames::FUNC_ARGS;
+
+ if (Sym.find(getIDName(PIC16ABINames::FUNC_AUTOS)))
+ return PIC16ABINames::FUNC_AUTOS;
+
+ if (Sym.find(getIDName(PIC16ABINames::LIBCALL)))
+ return PIC16ABINames::LIBCALL;
+
+ // It does not have any ID. So its a global.
+ assert (0 && "Could not determine ID symbol type");
+ }
+
inline static const char *PIC16CondCodeToString(PIC16CC::CondCodes CC) {
switch (CC) {
@@ -73,11 +162,15 @@
}
+
FunctionPass *createPIC16ISelDag(PIC16TargetMachine &TM);
FunctionPass *createPIC16CodePrinterPass(raw_ostream &OS,
PIC16TargetMachine &TM,
CodeGenOpt::Level OptLevel,
bool Verbose);
+ // Banksel optimzer pass.
+ FunctionPass *createPIC16MemSelOptimizerPass();
+ std::string getSectionNameForSym(const std::string &Sym);
} // end namespace llvm;
// Defines symbolic names for PIC16 registers. This defines a mapping from