lib/Target/PowerPC/PPCPredicates.cpp

   1 //===-- PPCPredicates.cpp - PPC Branch Predicate Information --------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file implements the PowerPC branch predicates.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "PPCPredicates.h"
  15 #include "llvm/Support/ErrorHandling.h"
  16 #include <cassert>
  17 using namespace llvm;
  18
  19 PPC::Predicate PPC::InvertPredicate(PPC::Predicate Opcode) {
  20   switch (Opcode) {
  21   default: llvm_unreachable("Unknown PPC branch opcode!");
  22   case PPC::PRED_EQ: return PPC::PRED_NE;
  23   case PPC::PRED_NE: return PPC::PRED_EQ;
  24   case PPC::PRED_LT: return PPC::PRED_GE;
  25   case PPC::PRED_GE: return PPC::PRED_LT;
  26   case PPC::PRED_GT: return PPC::PRED_LE;
  27   case PPC::PRED_LE: return PPC::PRED_GT;
  28   case PPC::PRED_NU: return PPC::PRED_UN;
  29   case PPC::PRED_UN: return PPC::PRED_NU;
  30   }
  31 }