Misha Brukman | a85d6bc | 2002-11-22 22:42:50 +0000 | [diff] [blame] | 1 | //===- X86InstrInfo.cpp - X86 Instruction Information -----------*- C++ -*-===// |
Chris Lattner | 7261408 | 2002-10-25 22:55:53 +0000 | [diff] [blame] | 2 | // |
Chris Lattner | 33f53b5 | 2002-10-29 20:48:56 +0000 | [diff] [blame] | 3 | // This file contains the X86 implementation of the MachineInstrInfo class. |
Chris Lattner | 7261408 | 2002-10-25 22:55:53 +0000 | [diff] [blame] | 4 | // |
| 5 | //===----------------------------------------------------------------------===// |
| 6 | |
Chris Lattner | 055c965 | 2002-10-29 21:05:24 +0000 | [diff] [blame] | 7 | #include "X86InstrInfo.h" |
Chris Lattner | 4ce42a7 | 2002-12-03 05:42:53 +0000 | [diff] [blame] | 8 | #include "X86.h" |
Chris Lattner | 9bbf439 | 2002-10-29 17:43:19 +0000 | [diff] [blame] | 9 | #include "llvm/CodeGen/MachineInstr.h" |
Chris Lattner | 4ce42a7 | 2002-12-03 05:42:53 +0000 | [diff] [blame] | 10 | |
| 11 | #define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS, IMPDEFS, IMPUSES) |
| 12 | #define IMPREGSLIST(NAME, ...) \ |
| 13 | static const unsigned NAME[] = { __VA_ARGS__ }; |
| 14 | #include "X86InstrInfo.def" |
| 15 | |
Chris Lattner | 7261408 | 2002-10-25 22:55:53 +0000 | [diff] [blame] | 16 | |
Chris Lattner | 055c965 | 2002-10-29 21:05:24 +0000 | [diff] [blame] | 17 | // X86Insts - Turn the InstrInfo.def file into a bunch of instruction |
Chris Lattner | 7261408 | 2002-10-25 22:55:53 +0000 | [diff] [blame] | 18 | // descriptors |
| 19 | // |
Chris Lattner | 9bbf439 | 2002-10-29 17:43:19 +0000 | [diff] [blame] | 20 | static const MachineInstrDescriptor X86Insts[] = { |
Chris Lattner | b339223 | 2002-12-18 01:05:54 +0000 | [diff] [blame^] | 21 | #define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS, IMPUSES, IMPDEFS) \ |
Chris Lattner | b752e9a | 2002-10-30 01:15:31 +0000 | [diff] [blame] | 22 | { NAME, \ |
| 23 | -1, /* Always vararg */ \ |
| 24 | ((TSFLAGS) & X86II::Void) ? -1 : 0, /* Result is in 0 */ \ |
Chris Lattner | b339223 | 2002-12-18 01:05:54 +0000 | [diff] [blame^] | 25 | 0, /* maxImmedConst field */\ |
| 26 | false, /* immedIsSignExtended */\ |
| 27 | 0, /* numDelaySlots */\ |
| 28 | 0, /* latency */\ |
| 29 | 0, /* schedClass */\ |
| 30 | FLAGS, /* Flags */\ |
| 31 | TSFLAGS, /* TSFlags */\ |
| 32 | IMPUSES, /* ImplicitUses */\ |
| 33 | IMPDEFS }, /* ImplicitDefs */ |
Chris Lattner | 055c965 | 2002-10-29 21:05:24 +0000 | [diff] [blame] | 34 | #include "X86InstrInfo.def" |
Chris Lattner | 7261408 | 2002-10-25 22:55:53 +0000 | [diff] [blame] | 35 | }; |
| 36 | |
Chris Lattner | 055c965 | 2002-10-29 21:05:24 +0000 | [diff] [blame] | 37 | X86InstrInfo::X86InstrInfo() |
Chris Lattner | 9bbf439 | 2002-10-29 17:43:19 +0000 | [diff] [blame] | 38 | : MachineInstrInfo(X86Insts, sizeof(X86Insts)/sizeof(X86Insts[0]), 0) { |
Chris Lattner | 7261408 | 2002-10-25 22:55:53 +0000 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | |
Chris Lattner | f21dfcd | 2002-11-18 06:56:24 +0000 | [diff] [blame] | 42 | static unsigned char BaseOpcodes[] = { |
Chris Lattner | 4ce42a7 | 2002-12-03 05:42:53 +0000 | [diff] [blame] | 43 | #define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS, IMPDEFS, IMPUSES) BASEOPCODE, |
Chris Lattner | f21dfcd | 2002-11-18 06:56:24 +0000 | [diff] [blame] | 44 | #include "X86InstrInfo.def" |
| 45 | }; |
| 46 | |
| 47 | // getBaseOpcodeFor - This function returns the "base" X86 opcode for the |
| 48 | // specified opcode number. |
| 49 | // |
| 50 | unsigned char X86InstrInfo::getBaseOpcodeFor(unsigned Opcode) const { |
| 51 | assert(Opcode < sizeof(BaseOpcodes)/sizeof(BaseOpcodes[0]) && |
| 52 | "Opcode out of range!"); |
| 53 | return BaseOpcodes[Opcode]; |
| 54 | } |