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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 
InvertPredicate(PPC::Predicate Opcode)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 }
32