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1 // The encoding used for conditional codes used in BR instructions
2 
3 #ifndef LLVM_LIB_TARGET_LANAI_LANAICONDCODE_H
4 #define LLVM_LIB_TARGET_LANAI_LANAICONDCODE_H
5 
6 #include "llvm/ADT/StringSwitch.h"
7 
8 namespace llvm {
9 namespace LPCC {
10 enum CondCode {
11   ICC_T = 0,   //  true
12   ICC_F = 1,   //  false
13   ICC_HI = 2,  //  high
14   ICC_UGT = 2, //  unsigned greater than
15   ICC_LS = 3,  //  low or same
16   ICC_ULE = 3, //  unsigned less than or equal
17   ICC_CC = 4,  //  carry cleared
18   ICC_ULT = 4, //  unsigned less than
19   ICC_CS = 5,  //  carry set
20   ICC_UGE = 5, //  unsigned greater than or equal
21   ICC_NE = 6,  //  not equal
22   ICC_EQ = 7,  //  equal
23   ICC_VC = 8,  //  oVerflow cleared
24   ICC_VS = 9,  //  oVerflow set
25   ICC_PL = 10, //  plus
26   ICC_MI = 11, //  minus
27   ICC_GE = 12, //  greater than or equal
28   ICC_LT = 13, //  less than
29   ICC_GT = 14, //  greater than
30   ICC_LE = 15, //  less than or equal
31   UNKNOWN
32 };
33 
lanaiCondCodeToString(LPCC::CondCode CC)34 inline static StringRef lanaiCondCodeToString(LPCC::CondCode CC) {
35   switch (CC) {
36   case LPCC::ICC_T:
37     return "t"; // true
38   case LPCC::ICC_F:
39     return "f"; // false
40   case LPCC::ICC_NE:
41     return "ne"; // not equal
42   case LPCC::ICC_EQ:
43     return "eq"; // equal
44   case LPCC::ICC_VC:
45     return "vc"; // oVerflow cleared
46   case LPCC::ICC_VS:
47     return "vs"; // oVerflow set
48   case LPCC::ICC_PL:
49     return "pl"; // plus
50   case LPCC::ICC_MI:
51     return "mi"; // minus
52   case LPCC::ICC_GE:
53     return "ge"; // greater than or equal
54   case LPCC::ICC_LT:
55     return "lt"; // less than
56   case LPCC::ICC_GT:
57     return "gt"; // greater than
58   case LPCC::ICC_LE:
59     return "le"; // less than or equal
60   case LPCC::ICC_UGT:
61     return "ugt"; // high | unsigned greater than
62   case LPCC::ICC_ULE:
63     return "ule"; // low or same | unsigned less or equal
64   case LPCC::ICC_ULT:
65     return "ult"; // carry cleared | unsigned less than
66   case LPCC::ICC_UGE:
67     return "uge"; // carry set | unsigned than or equal
68   default:
69     llvm_unreachable("Invalid cond code");
70   }
71 }
72 
suffixToLanaiCondCode(StringRef S)73 inline static CondCode suffixToLanaiCondCode(StringRef S) {
74   return StringSwitch<CondCode>(S)
75       .EndsWith("f", LPCC::ICC_F)
76       .EndsWith("hi", LPCC::ICC_HI)
77       .EndsWith("ugt", LPCC::ICC_UGT)
78       .EndsWith("ls", LPCC::ICC_LS)
79       .EndsWith("ule", LPCC::ICC_ULE)
80       .EndsWith("cc", LPCC::ICC_CC)
81       .EndsWith("ult", LPCC::ICC_ULT)
82       .EndsWith("cs", LPCC::ICC_CS)
83       .EndsWith("uge", LPCC::ICC_UGE)
84       .EndsWith("ne", LPCC::ICC_NE)
85       .EndsWith("eq", LPCC::ICC_EQ)
86       .EndsWith("vc", LPCC::ICC_VC)
87       .EndsWith("vs", LPCC::ICC_VS)
88       .EndsWith("pl", LPCC::ICC_PL)
89       .EndsWith("mi", LPCC::ICC_MI)
90       .EndsWith("ge", LPCC::ICC_GE)
91       .EndsWith("lt", LPCC::ICC_LT)
92       .EndsWith("gt", LPCC::ICC_GT)
93       .EndsWith("le", LPCC::ICC_LE)
94       .EndsWith("t", LPCC::ICC_T) // Has to be after others with suffix t
95       .Default(LPCC::UNKNOWN);
96 }
97 } // namespace LPCC
98 } // namespace llvm
99 
100 #endif // LLVM_LIB_TARGET_LANAI_LANAICONDCODE_H
101