From b2f869ee43338551582dc0d2178154de1d799e1a Mon Sep 17 00:00:00 2001
From: Brian Gaeke <gaeke@uiuc.edu>
Date: Thu, 4 Mar 2004 04:37:45 +0000
Subject: [PATCH] Subtract instructions; minor cleanups

llvm-svn: 12111
---
 lib/Target/SparcV8/InstSelectSimple.cpp | 10 ++++++----
 lib/Target/SparcV8/SparcV8InstrInfo.td  |  5 ++++-
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/lib/Target/SparcV8/InstSelectSimple.cpp b/lib/Target/SparcV8/InstSelectSimple.cpp
index 95ff31ec75b..5c145cb9399 100644
--- a/lib/Target/SparcV8/InstSelectSimple.cpp
+++ b/lib/Target/SparcV8/InstSelectSimple.cpp
@@ -165,9 +165,8 @@ static TypeClass getClass (const Type *T) {
 void V8ISel::copyConstantToRegister(MachineBasicBlock *MBB,
                                     MachineBasicBlock::iterator IP,
                                     Constant *C, unsigned R) {
-  if (C->getType()->isIntegral()) {
+  if (ConstantInt *CI = dyn_cast<ConstantInt> (C)) {
     unsigned Class = getClass(C->getType());
-    ConstantInt *CI = cast<ConstantInt>(C);
     switch (Class) {
       case cByte:
         BuildMI (*MBB, IP, V8::ORri, 2, R).addReg (V8::G0).addImm ((uint8_t) CI->getRawValue ());
@@ -185,12 +184,12 @@ void V8ISel::copyConstantToRegister(MachineBasicBlock *MBB,
         return;
       }
       default:
-        assert (0 && "Can't move this kind of constant");
+        assert (0 && "Can't copy this kind of constant into register yet");
         return;
     }
   }
 
-  assert (0 && "Can't copy constants into registers yet");
+  assert (0 && "Can't copy this kind of constant into register yet");
 }
 
 bool V8ISel::runOnFunction(Function &Fn) {
@@ -246,6 +245,9 @@ void V8ISel::visitBinaryOperator (BinaryOperator &I) {
     case Instruction::Add: 
       BuildMI (BB, V8::ADDrr, 2, ResultReg).addReg (Op0Reg).addReg (Op1Reg);
       break;
+    case Instruction::Sub: 
+      BuildMI (BB, V8::SUBrr, 2, ResultReg).addReg (Op0Reg).addReg (Op1Reg);
+      break;
     default:
 	  visitInstruction (I);
       return;
diff --git a/lib/Target/SparcV8/SparcV8InstrInfo.td b/lib/Target/SparcV8/SparcV8InstrInfo.td
index 7a544047d42..72ad34f25af 100644
--- a/lib/Target/SparcV8/SparcV8InstrInfo.td
+++ b/lib/Target/SparcV8/SparcV8InstrInfo.td
@@ -62,7 +62,7 @@ def CALL : InstV8 {
   let Name = "call";
 }
 
-// Section B.9 - SETHI Instruction, p. 102
+// Section B.9 - SETHI Instruction, p. 104
 def SETHIi: F2_1<0b100, "sethi">;
 
 // Section B.11 - Logical Instructions, p. 106
@@ -78,6 +78,9 @@ def SRAri : F3_1<2, 0b100111, "sra">;
 // Section B.13 - Add Instructions, p. 108
 def ADDrr : F3_1<2, 0b000000, "add">;
 
+// Section B.15 - Subtract Instructions, p. 110
+def SUBrr : F3_1<2, 0b000100, "sub">;
+
 // Section B.25 - Jump and Link, p. 126
 def JMPLr : F3_1<2, 0b111000, "jmpl">;              // jmpl [rs1+rs2], rd
 def JMPLi : F3_2<2, 0b111000, "jmpl">;              // jmpl [rs1+imm], rd