| Chris Lattner | 8c6a41e | 2006-11-17 22:10:59 +0000 | [diff] [blame] | 1 | //===-- PPCPredicates.cpp - PPC Branch Predicate Information --------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| Chris Lattner | f3ebc3f | 2007-12-29 20:36:04 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| Chris Lattner | 8c6a41e | 2006-11-17 22:10:59 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements the PowerPC branch predicates. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "PPCPredicates.h" |
| Torok Edwin | 56d0659 | 2009-07-11 20:10:48 +0000 | [diff] [blame] | 15 | #include "llvm/Support/ErrorHandling.h" |
| Chris Lattner | 8c6a41e | 2006-11-17 22:10:59 +0000 | [diff] [blame] | 16 | #include <cassert> |
| 17 | using namespace llvm; |
| 18 | |
| 19 | PPC::Predicate PPC::InvertPredicate(PPC::Predicate Opcode) { |
| 20 | switch (Opcode) { |
| Chris Lattner | 8c6a41e | 2006-11-17 22:10:59 +0000 | [diff] [blame] | 21 | case PPC::PRED_EQ: return PPC::PRED_NE; |
| 22 | case PPC::PRED_NE: return PPC::PRED_EQ; |
| 23 | case PPC::PRED_LT: return PPC::PRED_GE; |
| 24 | case PPC::PRED_GE: return PPC::PRED_LT; |
| 25 | case PPC::PRED_GT: return PPC::PRED_LE; |
| 26 | case PPC::PRED_LE: return PPC::PRED_GT; |
| 27 | case PPC::PRED_NU: return PPC::PRED_UN; |
| 28 | case PPC::PRED_UN: return PPC::PRED_NU; |
| Ulrich Weigand | 86247b6 | 2013-06-24 16:52:04 +0000 | [diff] [blame] | 29 | case PPC::PRED_EQ_MINUS: return PPC::PRED_NE_PLUS; |
| 30 | case PPC::PRED_NE_MINUS: return PPC::PRED_EQ_PLUS; |
| 31 | case PPC::PRED_LT_MINUS: return PPC::PRED_GE_PLUS; |
| 32 | case PPC::PRED_GE_MINUS: return PPC::PRED_LT_PLUS; |
| 33 | case PPC::PRED_GT_MINUS: return PPC::PRED_LE_PLUS; |
| 34 | case PPC::PRED_LE_MINUS: return PPC::PRED_GT_PLUS; |
| 35 | case PPC::PRED_NU_MINUS: return PPC::PRED_UN_PLUS; |
| 36 | case PPC::PRED_UN_MINUS: return PPC::PRED_NU_PLUS; |
| 37 | case PPC::PRED_EQ_PLUS: return PPC::PRED_NE_MINUS; |
| 38 | case PPC::PRED_NE_PLUS: return PPC::PRED_EQ_MINUS; |
| 39 | case PPC::PRED_LT_PLUS: return PPC::PRED_GE_MINUS; |
| 40 | case PPC::PRED_GE_PLUS: return PPC::PRED_LT_MINUS; |
| 41 | case PPC::PRED_GT_PLUS: return PPC::PRED_LE_MINUS; |
| 42 | case PPC::PRED_LE_PLUS: return PPC::PRED_GT_MINUS; |
| 43 | case PPC::PRED_NU_PLUS: return PPC::PRED_UN_MINUS; |
| 44 | case PPC::PRED_UN_PLUS: return PPC::PRED_NU_MINUS; |
| Hal Finkel | 940ab93 | 2014-02-28 00:27:01 +0000 | [diff] [blame] | 45 | |
| 46 | // Simple predicates for single condition-register bits. |
| 47 | case PPC::PRED_BIT_SET: return PPC::PRED_BIT_UNSET; |
| 48 | case PPC::PRED_BIT_UNSET: return PPC::PRED_BIT_SET; |
| Chris Lattner | 8c6a41e | 2006-11-17 22:10:59 +0000 | [diff] [blame] | 49 | } |
| David Blaikie | c2467c4 | 2013-06-12 20:57:32 +0000 | [diff] [blame] | 50 | llvm_unreachable("Unknown PPC branch opcode!"); |
| Chris Lattner | 8c6a41e | 2006-11-17 22:10:59 +0000 | [diff] [blame] | 51 | } |
| Hal Finkel | 0f64e21 | 2013-04-20 05:16:26 +0000 | [diff] [blame] | 52 | |
| 53 | PPC::Predicate PPC::getSwappedPredicate(PPC::Predicate Opcode) { |
| 54 | switch (Opcode) { |
| 55 | case PPC::PRED_EQ: return PPC::PRED_EQ; |
| 56 | case PPC::PRED_NE: return PPC::PRED_NE; |
| 57 | case PPC::PRED_LT: return PPC::PRED_GT; |
| 58 | case PPC::PRED_GE: return PPC::PRED_LE; |
| 59 | case PPC::PRED_GT: return PPC::PRED_LT; |
| 60 | case PPC::PRED_LE: return PPC::PRED_GE; |
| 61 | case PPC::PRED_NU: return PPC::PRED_NU; |
| 62 | case PPC::PRED_UN: return PPC::PRED_UN; |
| Ulrich Weigand | 86247b6 | 2013-06-24 16:52:04 +0000 | [diff] [blame] | 63 | case PPC::PRED_EQ_MINUS: return PPC::PRED_EQ_MINUS; |
| 64 | case PPC::PRED_NE_MINUS: return PPC::PRED_NE_MINUS; |
| 65 | case PPC::PRED_LT_MINUS: return PPC::PRED_GT_MINUS; |
| 66 | case PPC::PRED_GE_MINUS: return PPC::PRED_LE_MINUS; |
| 67 | case PPC::PRED_GT_MINUS: return PPC::PRED_LT_MINUS; |
| 68 | case PPC::PRED_LE_MINUS: return PPC::PRED_GE_MINUS; |
| 69 | case PPC::PRED_NU_MINUS: return PPC::PRED_NU_MINUS; |
| 70 | case PPC::PRED_UN_MINUS: return PPC::PRED_UN_MINUS; |
| 71 | case PPC::PRED_EQ_PLUS: return PPC::PRED_EQ_PLUS; |
| 72 | case PPC::PRED_NE_PLUS: return PPC::PRED_NE_PLUS; |
| 73 | case PPC::PRED_LT_PLUS: return PPC::PRED_GT_PLUS; |
| 74 | case PPC::PRED_GE_PLUS: return PPC::PRED_LE_PLUS; |
| 75 | case PPC::PRED_GT_PLUS: return PPC::PRED_LT_PLUS; |
| 76 | case PPC::PRED_LE_PLUS: return PPC::PRED_GE_PLUS; |
| 77 | case PPC::PRED_NU_PLUS: return PPC::PRED_NU_PLUS; |
| 78 | case PPC::PRED_UN_PLUS: return PPC::PRED_UN_PLUS; |
| Hal Finkel | 940ab93 | 2014-02-28 00:27:01 +0000 | [diff] [blame] | 79 | |
| 80 | case PPC::PRED_BIT_SET: |
| 81 | case PPC::PRED_BIT_UNSET: |
| 82 | llvm_unreachable("Invalid use of bit predicate code"); |
| Hal Finkel | 0f64e21 | 2013-04-20 05:16:26 +0000 | [diff] [blame] | 83 | } |
| David Blaikie | c2467c4 | 2013-06-12 20:57:32 +0000 | [diff] [blame] | 84 | llvm_unreachable("Unknown PPC branch opcode!"); |
| Hal Finkel | 0f64e21 | 2013-04-20 05:16:26 +0000 | [diff] [blame] | 85 | } |
| 86 | |