Silencing an MSVC C4334 warning ('<<' : result of 32-bit shift implicitly converted...

[oota-llvm.git] / lib / Target / PowerPC / PPCCodeEmitter.cpp

diff --git a/lib/Target/PowerPC/PPCCodeEmitter.cpp b/lib/Target/PowerPC/PPCCodeEmitter.cpp
index c46a09416bf35c8c94e3d1869e7902792fc192d8..18cf2a7525d4571aafc185c437f7d5339f86fdd8 100644 (file)
--- a/lib/Target/PowerPC/PPCCodeEmitter.cpp
+++ b/lib/Target/PowerPC/PPCCodeEmitter.cpp
@@ -32,7 +32,7 @@ namespace {
     JITCodeEmitter &MCE;
     MachineModuleInfo *MMI;
     
-    void getAnalysisUsage(AnalysisUsage &AU) const {
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.addRequired<MachineModuleInfo>();
       MachineFunctionPass::getAnalysisUsage(AU);
     }
@@ -70,14 +70,19 @@ namespace {
     unsigned getImm16Encoding(const MachineInstr &MI, unsigned OpNo) const;
     unsigned getMemRIEncoding(const MachineInstr &MI, unsigned OpNo) const;
     unsigned getMemRIXEncoding(const MachineInstr &MI, unsigned OpNo) const;
+    unsigned getSPE8DisEncoding(const MachineInstr &MI, unsigned OpNo) const;
+    unsigned getSPE4DisEncoding(const MachineInstr &MI, unsigned OpNo) const;
+    unsigned getSPE2DisEncoding(const MachineInstr &MI, unsigned OpNo) const;
     unsigned getTLSRegEncoding(const MachineInstr &MI, unsigned OpNo) const;
     unsigned getTLSCallEncoding(const MachineInstr &MI, unsigned OpNo) const;
 
-    const char *getPassName() const { return "PowerPC Machine Code Emitter"; }
+    const char *getPassName() const override {
+      return "PowerPC Machine Code Emitter";
+    }
 
     /// runOnMachineFunction - emits the given MachineFunction to memory
     ///
-    bool runOnMachineFunction(MachineFunction &MF);
+    bool runOnMachineFunction(MachineFunction &MF) override;
 
     /// emitBasicBlock - emits the given MachineBasicBlock to memory
     ///
@@ -146,7 +151,8 @@ unsigned PPCCodeEmitter::get_crbitm_encoding(const MachineInstr &MI,
   assert((MI.getOpcode() == PPC::MTOCRF || MI.getOpcode() == PPC::MTOCRF8 ||
           MI.getOpcode() == PPC::MFOCRF || MI.getOpcode() == PPC::MFOCRF8) &&
          (MO.getReg() >= PPC::CR0 && MO.getReg() <= PPC::CR7));
-  return 0x80 >> TM.getRegisterInfo()->getEncodingValue(MO.getReg());
+  return 0x80 >> TM.getSubtargetImpl()->getRegisterInfo()->getEncodingValue(
+                     MO.getReg());
 }
 
 MachineRelocation PPCCodeEmitter::GetRelocation(const MachineOperand &MO, 
@@ -258,6 +264,43 @@ unsigned PPCCodeEmitter::getMemRIXEncoding(const MachineInstr &MI,
   return RegBits;
 }
 
+unsigned PPCCodeEmitter::getSPE8DisEncoding(const MachineInstr &MI, unsigned OpNo) const {
+  // Encode (imm, reg) as a spe8dis, which has the low 5-bits of (imm / 8)
+  // as the displacement and the next 5 bits as the register #.
+  assert(MI.getOperand(OpNo+1).isReg());
+  uint32_t RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1)) << 5;
+
+  const MachineOperand &MO = MI.getOperand(OpNo);
+  assert(MO.isImm());
+  uint32_t Imm = getMachineOpValue(MI, MO) >> 3;
+  return reverseBits(Imm | RegBits) >> 22;
+}
+
+
+unsigned PPCCodeEmitter::getSPE4DisEncoding(const MachineInstr &MI, unsigned OpNo) const {
+  // Encode (imm, reg) as a spe4dis, which has the low 5-bits of (imm / 4)
+  // as the displacement and the next 5 bits as the register #.
+  assert(MI.getOperand(OpNo+1).isReg());
+  uint32_t RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1)) << 5;
+
+  const MachineOperand &MO = MI.getOperand(OpNo);
+  assert(MO.isImm());
+  uint32_t Imm = getMachineOpValue(MI, MO) >> 2;
+  return reverseBits(Imm | RegBits) >> 22;
+}
+
+
+unsigned PPCCodeEmitter::getSPE2DisEncoding(const MachineInstr &MI, unsigned OpNo) const {
+  // Encode (imm, reg) as a spe2dis, which has the low 5-bits of (imm / 2)
+  // as the displacement and the next 5 bits as the register #.
+  assert(MI.getOperand(OpNo+1).isReg());
+  uint32_t RegBits = getMachineOpValue(MI, MI.getOperand(OpNo+1)) << 5;
+
+  const MachineOperand &MO = MI.getOperand(OpNo);
+  assert(MO.isImm());
+  uint32_t Imm = getMachineOpValue(MI, MO) >> 1;
+  return reverseBits(Imm | RegBits) >> 22;
+}
 
 unsigned PPCCodeEmitter::getTLSRegEncoding(const MachineInstr &MI,
                                            unsigned OpNo) const {
@@ -280,7 +323,8 @@ unsigned PPCCodeEmitter::getMachineOpValue(const MachineInstr &MI,
     assert((MI.getOpcode() != PPC::MTOCRF && MI.getOpcode() != PPC::MTOCRF8 &&
             MI.getOpcode() != PPC::MFOCRF && MI.getOpcode() != PPC::MFOCRF8) ||
            MO.getReg() < PPC::CR0 || MO.getReg() > PPC::CR7);
-    return TM.getRegisterInfo()->getEncodingValue(MO.getReg());
+    return TM.getSubtargetImpl()->getRegisterInfo()->getEncodingValue(
+        MO.getReg());
   }
   
   assert(MO.isImm() &&