Use TargetMachine::hasDelaySlot() instead of our old switch statement

to find instrs that have delay slots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16610 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 45 deletions

diff --git a/lib/Target/Sparc/DelaySlotFiller.cpp b/lib/Target/Sparc/DelaySlotFiller.cpp
index 91995782c3..09937dea26 100644
--- a/lib/Target/Sparc/DelaySlotFiller.cpp
+++ b/lib/Target/Sparc/DelaySlotFiller.cpp
@@ -7,13 +7,15 @@
 // 
 //===----------------------------------------------------------------------===//
 //
-// Simple local delay slot filler for SparcV8 machine code
+// This is a simple local pass that fills delay slots with NOPs.
 //
 //===----------------------------------------------------------------------===//
 
 #include "SparcV8.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/ADT/Statistic.h"
 
 using namespace llvm;
@@ -26,8 +28,9 @@ namespace {
     /// layout, etc.
     ///
     TargetMachine &TM;
+    const TargetInstrInfo *TII;
 
-    Filler (TargetMachine &tm) : TM (tm) { }
+    Filler (TargetMachine &tm) : TM (tm), TII (tm.getInstrInfo ()) { }
 
     virtual const char *getPassName () const {
       return "SparcV8 Delay Slot Filler";
@@ -52,48 +55,6 @@ FunctionPass *llvm::createSparcV8DelaySlotFillerPass (TargetMachine &tm) {
   return new Filler (tm);
 }
 
-static bool hasDelaySlot (unsigned Opcode) {
-  switch (Opcode) {
-    case V8::BA:
-    case V8::BCC:
-    case V8::BCS:
-    case V8::BE:
-    case V8::BG:
-    case V8::BGE:
-    case V8::BGU:
-    case V8::BL:
-    case V8::BLE:
-    case V8::BLEU:
-    case V8::BNE:
-    case V8::CALL:
-    case V8::JMPLrr:
-    case V8::RETL:
-    case V8::FBA:
-    case V8::FBN:
-    case V8::FBU:
-    case V8::FBG:
-    case V8::FBUG:
-    case V8::FBL:
-    case V8::FBUL:
-    case V8::FBLG:
-    case V8::FBNE:
-    case V8::FBE:
-    case V8::FBUE:
-    case V8::FBGE:
-    case V8::FBUGE:
-    case V8::FBLE:
-    case V8::FBULE:
-    case V8::FBO:
-    case V8::FCMPS:
-    case V8::FCMPD:
-    case V8::FCMPES:
-    case V8::FCMPED:
-      return true;
-    default:
-      return false;
-  }
-}
-
 /// runOnMachineBasicBlock - Fill in delay slots for the given basic block.
 /// Currently, we fill delay slots with NOPs. We assume there is only one
 /// delay slot per delayed instruction.
@@ -101,7 +62,7 @@ static bool hasDelaySlot (unsigned Opcode) {
 bool Filler::runOnMachineBasicBlock (MachineBasicBlock &MBB) {
   bool Changed = false;
   for (MachineBasicBlock::iterator I = MBB.begin (); I != MBB.end (); ++I)
-    if (hasDelaySlot (I->getOpcode ())) {
+    if (TII->hasDelaySlot (I->getOpcode ())) {
       MachineBasicBlock::iterator J = I;
       ++J;
       BuildMI (MBB, J, V8::NOP, 0);