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Expose base opcode
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4742 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -25,3 +25,16 @@ X86InstrInfo::X86InstrInfo()
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}
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static unsigned char BaseOpcodes[] = {
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#define I(ENUM, NAME, BASEOPCODE, FLAGS, TSFLAGS) BASEOPCODE,
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#include "X86InstrInfo.def"
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};
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// getBaseOpcodeFor - This function returns the "base" X86 opcode for the
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// specified opcode number.
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//
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unsigned char X86InstrInfo::getBaseOpcodeFor(unsigned Opcode) const {
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assert(Opcode < sizeof(BaseOpcodes)/sizeof(BaseOpcodes[0]) &&
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"Opcode out of range!");
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return BaseOpcodes[Opcode];
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}
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@ -54,6 +54,7 @@ namespace X86II {
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/// TODO: Mod/RM that uses a fixed opcode extension, like /0
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FormMask = 7,
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//===------------------------------------------------------------------===//
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// Actual flags...
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@ -83,6 +84,12 @@ public:
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virtual void print(const MachineInstr *MI, std::ostream &O,
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const TargetMachine &TM) const;
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// getBaseOpcodeFor - This function returns the "base" X86 opcode for the
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// specified opcode number.
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//
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unsigned char getBaseOpcodeFor(unsigned Opcode) const;
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//===--------------------------------------------------------------------===//
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//
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