Push processor descriptions to the top of target and add command line info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23820 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCSchedule.td

@@ -7,20 +7,11 @@
 // 
 //===----------------------------------------------------------------------===//
 
-#include "../TargetSchedule.td"
+#include "../Target.td"
-
-//===----------------------------------------------------------------------===//
-// PowerPC chips sets supported by scheduling (Apple naming)
-//
-def G3      : Processor;
-def G4      : Processor;
-def G4Plus  : Processor;
-def G5      : Processor;
 
 //===----------------------------------------------------------------------===//
 // Functional units across PowerPC chips sets
 //
-def NoUnit : FuncUnit; // Instruction not supported on chip set
 def BPU    : FuncUnit; // Branch unit
 def SLU    : FuncUnit; // Store/load unit
 def SRU    : FuncUnit; // special register unit
@@ -518,3 +509,38 @@ def VecVSR       : InstrItinClass;
 //    xoris      IntGeneral
 //
 
+
+//===----------------------------------------------------------------------===//
+// PowerPC Subtarget features.
+//
+ 
+def F64Bit     : SubtargetFeature<"64bit",
+                  "Should 64 bit instructions be used">;
+def F64BitRegs : SubtargetFeature<"64bitregs",
+                  "Should 64 bit registers be used">;
+def FAltivec   : SubtargetFeature<"altivec",
+                  "Should Altivec instructions be used">;
+def FGPUL      : SubtargetFeature<"gpul",
+                  "Should GPUL instructions be used">;
+def FFSQRT     : SubtargetFeature<"fsqrt",
+                  "Should the fsqrt instruction be used">; 
+
+//===----------------------------------------------------------------------===//
+// PowerPC chips sets supported
+//
+
+def : Processor<"601", G3Itineraries, []>;
+def : Processor<"602", G3Itineraries, []>;
+def : Processor<"603", G3Itineraries, []>;
+def : Processor<"604", G3Itineraries, []>;
+def : Processor<"750", G3Itineraries, []>;
+def : Processor<"7400", G4Itineraries, [FAltivec]>;
+def : Processor<"g4", G4Itineraries, [FAltivec]>;
+def : Processor<"7450", G4PlusItineraries, [FAltivec]>;
+def : Processor<"g4+", G4PlusItineraries, [FAltivec]>;
+def : Processor<"970", G5Itineraries,
+                  [FAltivec, FGPUL, FFSQRT, F64Bit, F64BitRegs]>;
+def : Processor<"g5", G5Itineraries,
+                  [FAltivec, FGPUL, FFSQRT, F64Bit, F64BitRegs]>;
+
+

lib/Target/PowerPC/PPCScheduleG3.td

@@ -12,7 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 
-def G3Itineraries : ProcessorItineraries<G3, [
+def G3Itineraries : ProcessorItineraries<[
   InstrItinData<IntGeneral  , [InstrStage<1, [IU1, IU2]>]>,
   InstrItinData<IntCompare  , [InstrStage<1, [IU1, IU2]>]>,
   InstrItinData<IntDivW     , [InstrStage<19, [IU1]>]>,

lib/Target/PowerPC/PPCScheduleG4.td

@@ -11,7 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-def G4Itineraries : ProcessorItineraries<G4, [
+def G4Itineraries : ProcessorItineraries<[
   InstrItinData<IntGeneral  , [InstrStage<1, [IU1, IU2]>]>,
   InstrItinData<IntCompare  , [InstrStage<1, [IU1, IU2]>]>,
   InstrItinData<IntDivW     , [InstrStage<19, [IU1]>]>,

lib/Target/PowerPC/PPCScheduleG4Plus.td

@@ -11,7 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-def G4PlusItineraries : ProcessorItineraries<G4Plus, [
+def G4PlusItineraries : ProcessorItineraries<[
   InstrItinData<IntGeneral  , [InstrStage<1, [IU1, IU2, IU3, IU4]>]>,
   InstrItinData<IntCompare  , [InstrStage<1, [IU1, IU2, IU3, IU4]>]>,
   InstrItinData<IntDivW     , [InstrStage<23, [IU2]>]>,

lib/Target/PowerPC/PPCScheduleG5.td

@@ -11,7 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-def G5Itineraries : ProcessorItineraries<G5, [
+def G5Itineraries : ProcessorItineraries<[
   InstrItinData<IntGeneral  , [InstrStage<2, [IU1, IU2]>]>,
   InstrItinData<IntCompare  , [InstrStage<3, [IU1, IU2]>]>,
   InstrItinData<IntDivD     , [InstrStage<68, [IU1]>]>,

lib/Target/Target.td

@@ -241,6 +241,45 @@ class Target {
   list<AsmWriter> AssemblyWriters = [DefaultAsmWriter];
 }
 
+//===----------------------------------------------------------------------===//
+// Pull in the common support for scheduling
+//
+include "../TargetSchedule.td"
+
+//===----------------------------------------------------------------------===//
+// SubtargetFeature - A characteristic of the chip set.
+//
+class SubtargetFeature<string n, string d> {
+  // Name - Feature name.  Used by command line (-mattr=) to determine the
+  // appropriate target chip.
+  //
+  string Name = n;
+  
+  // Desc - Feature description.  Used by command line (-mattr=) to display help
+  // information.
+  //
+  string Desc = d;
+}
+
+//===----------------------------------------------------------------------===//
+// Processor chip sets - These values represent each of the chip sets supported
+// by the scheduler.  Each Processor definition requires corresponding
+// instruction itineraries.
+//
+class Processor<string n, ProcessorItineraries pi, list<SubtargetFeature> f> {
+  // Name - Chip set name.  Used by command line (-mcpu=) to determine the
+  // appropriate target chip.
+  //
+  string Name = n;
+  
+  // ProcItin - The scheduling information for the target processor.
+  //
+  ProcessorItineraries ProcItin = pi;
+  
+  // Features - list of 
+  list<SubtargetFeature> Features;
+}
+
 //===----------------------------------------------------------------------===//
 // Pull in the common support for DAG isel generation
 //

lib/Target/TargetSchedule.td

@@ -12,13 +12,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-//===----------------------------------------------------------------------===//
-// Processor chip sets - These values represent each of the chip sets supported
-// by the scheduler.  Each Processor definition requires corresponding
-// instruction itineraries.
-//
-class Processor;
-
 //===----------------------------------------------------------------------===//
 // Processor functional unit - These values represent the function units
 // available across all chip sets for the target.  Eg., IntUnit, FPUnit, ...
@@ -68,7 +61,6 @@ class InstrItinData<InstrItinClass Class, list<InstrStage> stages> {
 // Processor itineraries - These values represent the set of all itinerary
 // classes for a given chip set.
 //
-class ProcessorItineraries<Processor proc, list<InstrItinData> iid> {
+class ProcessorItineraries<list<InstrItinData> iid> {
-  Processor Proc = proc;
   list<InstrItinData> IID = iid;
 }