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Add two new pseudo instructions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6008 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-05-06 21:31:31 +00:00
parent 8bde96f9a2
commit eab49345cb
1 changed files with 15 additions and 2 deletions
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17
lib/Target/X86/X86InstrInfo.def
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@ -72,12 +72,25 @@ I(NOOP , "nop", 0x90, 0, X86II::RawFrm | X86II::Void, NoIR,
// instruction turns into a noop, but if the frame pointer is retained, this
// turns into a 'sub ESP, <amount>'.
//
I(ADJCALLSTACKDOWN, "adjcallstackdown", 0, 0, X86II::Pseudo, NoIR, NoIR)
I(ADJCALLSTACKDOWN, "adjcallstackdown", 0, 0, X86II::Pseudo, NoIR, NoIR)
// This instruction is used to mark readjustment of the stack after a function
// call. If the frame pointer is retained, this becomes a 'add ESP, <amount>'
// instruction after the call.
I(ADJCALLSTACKUP , "adjcallstackup" , 0, 0, X86II::Pseudo, NoIR, NoIR)
I(ADJCALLSTACKUP , "adjcallstackup" , 0, 0, X86II::Pseudo, NoIR, NoIR)
// This pseudo-instruction is used to record implicit definitions of physical
// registers: registers that are live on input to the function (currently just
// the stack pointer, eventually could include arguments passed in registers).
//
I(IMPLICIT_DEF, "implicit_def", 0, 0, X86II::Pseudo, NoIR, NoIR)
// This pseudo-instruction is used to record implicit uses of physical registers
// at the end of the function. This ensures that bad things aren't done to
// registes that are live on exit from the function (for example, EAX).
//
I(IMPLICIT_USE, "implicit_use", 0, 0, X86II::Pseudo, NoIR, NoIR)
// Flow control instructions
I(RET , "ret", 0xC3, M_RET_FLAG | M_TERMINATOR_FLAG, X86II::RawFrm | X86II::Void, NoIR, NoIR) // ret