I'm introducing a new machine model to simultaneously allow simple

[oota-llvm.git] / include / llvm / Target / Target.td

diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td
index eae47ae4ff43d17f65e024daac8ebbe0b52b8e4c..440cf65d47077c72027834a072f2376909951ca0 100644 (file)
--- a/include/llvm/Target/Target.td
+++ b/include/llvm/Target/Target.td
@@ -752,7 +752,7 @@ class AsmParser {
 def DefaultAsmParser : AsmParser;
 
 //===----------------------------------------------------------------------===//
-// AsmParserVariant - Subtargets can have multiple different assembly parsers 
+// AsmParserVariant - Subtargets can have multiple different assembly parsers
 // (e.g. AT&T vs Intel syntax on X86 for example). This class can be
 // implemented by targets to describe such variants.
 //
@@ -885,7 +885,7 @@ class Target {
   // AssemblyParsers - The AsmParser instances available for this target.
   list<AsmParser> AssemblyParsers = [DefaultAsmParser];
 
-  /// AssemblyParserVariants - The AsmParserVariant instances available for 
+  /// AssemblyParserVariants - The AsmParserVariant instances available for
   /// this target.
   list<AsmParserVariant> AssemblyParserVariants = [DefaultAsmParserVariant];
 
@@ -933,6 +933,10 @@ class Processor<string n, ProcessorItineraries pi, list<SubtargetFeature> f> {
   //
   string Name = n;
 
+  // SchedModel - The machine model for scheduling and instruction cost.
+  //
+  SchedMachineModel SchedModel = NoSchedModel;
+
   // ProcItin - The scheduling information for the target processor.
   //
   ProcessorItineraries ProcItin = pi;
@@ -941,6 +945,14 @@ class Processor<string n, ProcessorItineraries pi, list<SubtargetFeature> f> {
   list<SubtargetFeature> Features = f;
 }
 
+// ProcessorModel allows subtargets to specify the more general
+// SchedMachineModel instead if a ProcessorItinerary. Subtargets will
+// gradually move to this newer form.
+class ProcessorModel<string n, SchedMachineModel m, list<SubtargetFeature> f>
+  : Processor<n, NoItineraries, f> {
+  let SchedModel = m;
+}
+
 //===----------------------------------------------------------------------===//
 // Pull in the common support for calling conventions.
 //