Shrink various scheduling tables by using narrower types.

16 bits ought to be enough for everyone. This shrinks clang by ~1MB.

llvm-svn: 325941

1 files changed, 12 insertions, 7 deletions

diff --git a/llvm/utils/TableGen/SubtargetEmitter.cpp b/llvm/utils/TableGen/SubtargetEmitter.cpp
index c7ccc60acaf..97b8d116868 100644
--- a/llvm/utils/TableGen/SubtargetEmitter.cpp
+++ b/llvm/utils/TableGen/SubtargetEmitter.cpp
@@ -444,7 +444,7 @@ EmitStageAndOperandCycleData(raw_ostream &OS,
       }
 
       // Check to see if stage already exists and create if it doesn't
-      unsigned FindStage = 0;
+      uint16_t FindStage = 0;
       if (NStages > 0) {
         FindStage = ItinStageMap[ItinStageString];
         if (FindStage == 0) {
@@ -460,7 +460,7 @@ EmitStageAndOperandCycleData(raw_ostream &OS,
       }
 
       // Check to see if operand cycle already exists and create if it doesn't
-      unsigned FindOperandCycle = 0;
+      uint16_t FindOperandCycle = 0;
       if (NOperandCycles > 0) {
         std::string ItinOperandString = ItinOperandCycleString+ItinBypassString;
         FindOperandCycle = ItinOperandMap[ItinOperandString];
@@ -482,10 +482,14 @@ EmitStageAndOperandCycleData(raw_ostream &OS,
       }
 
       // Set up itinerary as location and location + stage count
-      int NumUOps = ItinData ? ItinData->getValueAsInt("NumMicroOps") : 0;
-      InstrItinerary Intinerary = { NumUOps, FindStage, FindStage + NStages,
-                                    FindOperandCycle,
-                                    FindOperandCycle + NOperandCycles };
+      int16_t NumUOps = ItinData ? ItinData->getValueAsInt("NumMicroOps") : 0;
+      InstrItinerary Intinerary = {
+          NumUOps,
+          FindStage,
+          uint16_t(FindStage + NStages),
+          FindOperandCycle,
+          uint16_t(FindOperandCycle + NOperandCycles),
+      };
 
       // Inject - empty slots will be 0, 0
       ItinList[SchedClassIdx] = Intinerary;
@@ -561,7 +565,8 @@ EmitItineraries(raw_ostream &OS,
         ", // " << j << " " << SchedModels.getSchedClass(j).Name << "\n";
     }
     // End processor itinerary table
-    OS << "  { 0, ~0U, ~0U, ~0U, ~0U } // end marker\n";
+    OS << "  { 0, uint16_t(~0U), uint16_t(~0U), uint16_t(~0U), uint16_t(~0U) }"
+          "// end marker\n";
     OS << "};\n";
   }
 }