From 7ad3e063f508218a2823bd5cf092ef622ed7ba6c Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 3 Aug 2003 15:48:14 +0000
Subject: [PATCH] Switch over to TableGen generated register file description

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7511 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/Makefile            |  17 +++
 lib/Target/X86/X86RegisterInfo.cpp | 117 ++-------------------
 lib/Target/X86/X86RegisterInfo.def | 161 -----------------------------
 lib/Target/X86/X86RegisterInfo.h   |   7 +-
 4 files changed, 28 insertions(+), 274 deletions(-)
 delete mode 100644 lib/Target/X86/X86RegisterInfo.def

diff --git a/lib/Target/X86/Makefile b/lib/Target/X86/Makefile
index ba71b6bb03d..80ace9804a1 100644
--- a/lib/Target/X86/Makefile
+++ b/lib/Target/X86/Makefile
@@ -2,3 +2,20 @@ LEVEL = ../../..
 LIBRARYNAME = x86
 include $(LEVEL)/Makefile.common
 
+
+
+# Make sure that tblgen is run, first thing.
+$(SourceDepend): X86GenRegisterInfo.h.inc X86GenRegisterNames.inc X86GenRegisterInfo.inc
+
+X86GenRegisterNames.inc:  $(wildcard *.td) $(TBLGEN)
+	$(TBLGEN) X86.td -gen-register-enums -o $@
+
+X86GenRegisterInfo.h.inc: $(wildcard *.td) $(TBLGEN)
+	$(TBLGEN) X86.td -gen-register-desc-header -o $@
+
+X86GenRegisterInfo.inc: $(wildcard *.td) $(TBLGEN)
+	$(TBLGEN) X86.td -gen-register-desc -o $@
+
+clean::
+	$(VERB) rm -f *.inc
+
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 1881ac01eb0..354bf4292cb 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -24,6 +24,9 @@ namespace {
 	   cl::desc("Disable frame pointer elimination optimization"));
 }
 
+X86RegisterInfo::X86RegisterInfo()
+  : X86GenRegisterInfo(X86::ADJCALLSTACKDOWN, X86::ADJCALLSTACKUP) {}
+
 static unsigned getIdx(const TargetRegisterClass *RC) {
   switch (RC->getSize()) {
   default: assert(0 && "Invalid data size!");
@@ -66,14 +69,6 @@ void X86RegisterInfo::copyRegToReg(MachineBasicBlock &MBB,
   MBBI = MBB.insert(MBBI, MI)+1;
 }
 
-const unsigned* X86RegisterInfo::getCalleeSaveRegs() const {
-  static const unsigned CalleeSaveRegs[] = {
-    X86::ESI, X86::EDI, X86::EBX, X86::EBP, 0
-  };
-  return CalleeSaveRegs;
-}
-
-
 //===----------------------------------------------------------------------===//
 // Stack Frame Processing methods
 //===----------------------------------------------------------------------===//
@@ -249,103 +244,7 @@ void X86RegisterInfo::emitEpilogue(MachineFunction &MF,
   }
 }
 
-
-//===----------------------------------------------------------------------===//
-// Register Class Implementation Code
-//===----------------------------------------------------------------------===//
-
-//===----------------------------------------------------------------------===//
-//   8 Bit Integer Registers
-//
-namespace {
-  const unsigned ByteRegClassRegs[] = {
-    X86::AL, X86::CL, X86::DL, X86::BL, X86::AH, X86::CH, X86::DH, X86::BH,
-  };
-
-  TargetRegisterClass X86ByteRegisterClassInstance(1, 1, ByteRegClassRegs,
- ByteRegClassRegs+sizeof(ByteRegClassRegs)/sizeof(ByteRegClassRegs[0]));
-
-//===----------------------------------------------------------------------===//
-//   16 Bit Integer Registers
-//
-  const unsigned ShortRegClassRegs[] = {
-    X86::AX, X86::CX, X86::DX, X86::BX, X86::SI, X86::DI, X86::BP, X86::SP
-  };
-
-  struct R16CL : public TargetRegisterClass {
-    R16CL():TargetRegisterClass(2, 2, ShortRegClassRegs, ShortRegClassRegs+8) {}
-    iterator allocation_order_end(MachineFunction &MF)   const {
-      if (hasFP(MF))     // Does the function dedicate EBP to being a frame ptr?
-	return end()-2;  // Don't allocate SP or BP
-      else
-	return end()-1;  // Don't allocate SP
-    }
-  } X86ShortRegisterClassInstance;
-
-//===----------------------------------------------------------------------===//
-//   32 Bit Integer Registers
-//
-  const unsigned IntRegClassRegs[] = {
-    X86::EAX, X86::ECX, X86::EDX, X86::EBX,
-    X86::ESI, X86::EDI, X86::EBP, X86::ESP
-  };
-
-  struct R32CL : public TargetRegisterClass {
-    R32CL() : TargetRegisterClass(4, 4, IntRegClassRegs, IntRegClassRegs+8) {}
-    iterator allocation_order_end(MachineFunction &MF)   const {
-      if (hasFP(MF))     // Does the function dedicate EBP to being a frame ptr?
-	return end()-2;  // Don't allocate ESP or EBP
-      else
-	return end()-1;  // Don't allocate ESP
-    }
-  } X86IntRegisterClassInstance;
-
-//===----------------------------------------------------------------------===//
-//   Pseudo Floating Point Registers
-//
-  const unsigned PFPRegClassRegs[] = {
-#define PFP(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) X86::ENUM,
-#include "X86RegisterInfo.def"
-  };
-
-  TargetRegisterClass X86FPRegisterClassInstance(10, 4, PFPRegClassRegs,
-      PFPRegClassRegs+sizeof(PFPRegClassRegs)/sizeof(PFPRegClassRegs[0]));
-
-//===----------------------------------------------------------------------===//
-// Register class array...
-//
-  const TargetRegisterClass * const X86RegClasses[] = {
-    &X86ByteRegisterClassInstance,
-    &X86ShortRegisterClassInstance,
-    &X86IntRegisterClassInstance,
-    &X86FPRegisterClassInstance,
-  };
-}
-
-
-// Create static lists to contain register alias sets...
-#define ALIASLIST(NAME, ...) \
-  static const unsigned NAME[] = { __VA_ARGS__ };
-#include "X86RegisterInfo.def"
-
-
-// X86Regs - Turn the X86RegisterInfo.def file into a bunch of register
-// descriptors
-//
-static const MRegisterDesc X86Regs[] = {
-#define R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
-         { NAME, ALIAS_SET, FLAGS, TSFLAGS },
-#include "X86RegisterInfo.def"
-};
-
-X86RegisterInfo::X86RegisterInfo()
-  : MRegisterInfo(X86Regs, sizeof(X86Regs)/sizeof(X86Regs[0]),
-                  X86RegClasses,
-                  X86RegClasses+sizeof(X86RegClasses)/sizeof(X86RegClasses[0]),
-		  X86::ADJCALLSTACKDOWN, X86::ADJCALLSTACKUP) {
-}
-
-
+#include "X86GenRegisterInfo.inc"
 
 const TargetRegisterClass*
 X86RegisterInfo::getRegClassForType(const Type* Ty) const {
@@ -355,14 +254,14 @@ X86RegisterInfo::getRegClassForType(const Type* Ty) const {
   default:              assert(0 && "Invalid type to getClass!");
   case Type::BoolTyID:
   case Type::SByteTyID:
-  case Type::UByteTyID:   return &X86ByteRegisterClassInstance;
+  case Type::UByteTyID:   return &r8Instance;
   case Type::ShortTyID:
-  case Type::UShortTyID:  return &X86ShortRegisterClassInstance;
+  case Type::UShortTyID:  return &r16Instance;
   case Type::IntTyID:
   case Type::UIntTyID:
-  case Type::PointerTyID: return &X86IntRegisterClassInstance;
+  case Type::PointerTyID: return &r32Instance;
     
   case Type::FloatTyID:
-  case Type::DoubleTyID: return &X86FPRegisterClassInstance;
+  case Type::DoubleTyID: return &rFPInstance;
   }
 }
diff --git a/lib/Target/X86/X86RegisterInfo.def b/lib/Target/X86/X86RegisterInfo.def
deleted file mode 100644
index bbfe0548077..00000000000
--- a/lib/Target/X86/X86RegisterInfo.def
+++ /dev/null
@@ -1,161 +0,0 @@
-//===-- X86RegisterInfo.def - X86 Register Information ----------*- C++ -*-===//
-//
-// This file describes all of the registers that the X86 backend uses. It relies
-// on an external 'R' macro being defined that takes the arguments specified
-// below, and is used to make all of the information relevant to registers be in
-// one place.
-//
-//===----------------------------------------------------------------------===//
-
-// NOTE: No include guards desired
-#ifndef R
-#define R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-#ifndef R8
-#define R8(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
-   R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-#ifndef R16
-#define R16(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
-   R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-#ifndef R32
-#define R32(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
-   R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-// Pseudo Floating Point registers
-#ifndef PFP
-#define PFP(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
-   R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-// Floating Point Stack registers
-#ifndef FPS
-#define FPS(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET) \
-   R(ENUM, NAME, FLAGS, TSFLAGS, ALIAS_SET)
-#endif
-
-// Arguments passed into the R macros
-//  #1: Enum Name - This ends up being a symbol in the X86 namespace
-//  #2: Register name - The name of the register as used by the gnu assembler
-//  #3: Register Flags - A bitfield of flags or'd together from the
-//      MRegisterInfo.h file.
-//  #4: Target Specific Flags - Another bitfield containing X86 specific flags
-//      as necessary.
-//  #5: Alias set for registers aliased to this register (sets defined below).
-
-
-// The first register must always be a 'noop' register for all backends.  This
-// is used as the destination register for instructions that do not produce a
-// value.  Some frontends may use this as an operand register to mean special
-// things, for example, the Sparc backend uses R#0 to mean %g0 which always
-// PRODUCES the value 0.
-//
-// The X86 backend uses this value as an operand register only in memory
-// references where it means that there is no base or index register.
-//
-R(NoReg,"none",          0, 0, 0/*noalias*/)
-
-// 32 bit registers, ordered as the processor does...
-R32(EAX, "EAX", MVT::i32, 0, A_EAX)
-R32(ECX, "ECX", MVT::i32, 0, A_ECX)
-R32(EDX, "EDX", MVT::i32, 0, A_EDX)
-R32(EBX, "EBX", MVT::i32, 0, A_EBX)
-R32(ESP, "ESP", MVT::i32, 0, A_ESP)
-R32(EBP, "EBP", MVT::i32, 0, A_EBP)
-R32(ESI, "ESI", MVT::i32, 0, A_ESI)
-R32(EDI, "EDI", MVT::i32, 0, A_EDI)
-
-// 16 bit registers, aliased with the corresponding 32 bit registers above
-R16( AX, "AX" , MVT::i16, 0, A_AX)
-R16( CX, "CX" , MVT::i16, 0, A_CX)
-R16( DX, "DX" , MVT::i16, 0, A_DX)
-R16( BX, "BX" , MVT::i16, 0, A_BX)
-R16( SP, "SP" , MVT::i16, 0, A_SP)
-R16( BP, "BP" , MVT::i16, 0, A_BP)
-R16( SI, "SI" , MVT::i16, 0, A_SI)
-R16( DI, "DI" , MVT::i16, 0, A_DI)
-
-// 8 bit registers aliased with registers above as well
-R8 ( AL, "AL" , MVT::i8 , 0, A_AL)
-R8 ( CL, "CL" , MVT::i8 , 0, A_CL)
-R8 ( DL, "DL" , MVT::i8 , 0, A_DL)
-R8 ( BL, "BL" , MVT::i8 , 0, A_BL)
-R8 ( AH, "AH" , MVT::i8 , 0, A_AH)
-R8 ( CH, "CH" , MVT::i8 , 0, A_CH)
-R8 ( DH, "DH" , MVT::i8 , 0, A_DH)
-R8 ( BH, "BH" , MVT::i8 , 0, A_BH)
-
-// Pseudo Floating Point Registers
-PFP(FP0, "FP0", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP1, "FP1", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP2, "FP2", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP3, "FP3", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP4, "FP4", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP5, "FP5", MVT::f80 , 0, 0 /*noalias*/)
-PFP(FP6, "FP6", MVT::f80 , 0, 0 /*noalias*/)
-
-// Floating point stack registers
-FPS(ST0, "ST(0)", MVT::f80, 0, 0)
-FPS(ST1, "ST(1)", MVT::f80, 0, 0)
-FPS(ST2, "ST(2)", MVT::f80, 0, 0)
-FPS(ST3, "ST(3)", MVT::f80, 0, 0)
-FPS(ST4, "ST(4)", MVT::f80, 0, 0)
-FPS(ST5, "ST(5)", MVT::f80, 0, 0)
-FPS(ST6, "ST(6)", MVT::f80, 0, 0)
-FPS(ST7, "ST(7)", MVT::f80, 0, 0)
-
-// Flags, Segment registers, etc...
-
-// This is a slimy hack to make it possible to say that flags are clobbered...
-// Ideally we'd model instructions based on which particular flag(s) they
-// could clobber. 
-R(EFLAGS, "EFLAGS", MVT::i16, 0, 0 /*noalias*/)
-
-
-//===----------------------------------------------------------------------===//
-// Register alias set handling...
-//
-
-// Macro to handle definitions of alias sets that registers use...
-#ifndef ALIASLIST
-#define ALIASLIST(NAME, ...)
-#endif
-
-ALIASLIST(A_EAX     , X86::AX, X86::AH, X86::AL, 0)
-ALIASLIST(A_ECX     , X86::CX, X86::CH, X86::CL, 0)
-ALIASLIST(A_EDX     , X86::DX, X86::DH, X86::DL, 0)
-ALIASLIST(A_EBX     , X86::BX, X86::BH, X86::BL, 0)
-ALIASLIST(A_ESP     , X86::SP, 0)
-ALIASLIST(A_EBP     , X86::BP, 0)
-ALIASLIST(A_ESI     , X86::SI, 0)
-ALIASLIST(A_EDI     , X86::DI, 0)
-ALIASLIST(A_AX      , X86::EAX, X86::AH, X86::AL, 0)
-ALIASLIST(A_CX      , X86::ECX, X86::CH, X86::CL, 0)
-ALIASLIST(A_DX      , X86::EDX, X86::DH, X86::DL, 0)
-ALIASLIST(A_BX      , X86::EBX, X86::BH, X86::BL, 0)
-ALIASLIST(A_SP      , X86::ESP, 0)
-ALIASLIST(A_BP      , X86::EBP, 0)
-ALIASLIST(A_SI      , X86::ESI, 0)
-ALIASLIST(A_DI      , X86::EDI, 0)
-ALIASLIST(A_AL      , X86::EAX, X86::AX, 0)
-ALIASLIST(A_CL      , X86::ECX, X86::CX, 0)
-ALIASLIST(A_DL      , X86::EDX, X86::DX, 0)
-ALIASLIST(A_BL      , X86::EBX, X86::BX, 0)
-ALIASLIST(A_AH      , X86::EAX, X86::AX, 0)
-ALIASLIST(A_CH      , X86::ECX, X86::CX, 0)
-ALIASLIST(A_DH      , X86::EDX, X86::DX, 0)
-ALIASLIST(A_BH      , X86::EBX, X86::BX, 0)
-#undef ALIASLIST
-
-// We are now done with the R* macros
-#undef R
-#undef R8
-#undef R16
-#undef R32
-#undef PFP
-#undef FPS
diff --git a/lib/Target/X86/X86RegisterInfo.h b/lib/Target/X86/X86RegisterInfo.h
index c804691e6c7..e864dc3b26b 100644
--- a/lib/Target/X86/X86RegisterInfo.h
+++ b/lib/Target/X86/X86RegisterInfo.h
@@ -11,11 +11,10 @@
 
 class Type;
 
-struct X86RegisterInfo : public MRegisterInfo {
+#include "X86GenRegisterInfo.h.inc"
+
+struct X86RegisterInfo : public X86GenRegisterInfo {
   X86RegisterInfo();
-
-  const unsigned* getCalleeSaveRegs() const;
-
   const TargetRegisterClass* getRegClassForType(const Type* Ty) const;
 
   /// Code Generation virtual methods...