[PATCH] D12498: X86: add an interrupt calling convention

[Peter Marheine via llvm-commits]

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Add support for X86 hardware interrupt contexts. These require that all registers be saved (with a few minor exceptions), and sometimes take one parameter. The parameter value (if present) is placed on the stack below the function return address, so it must be popped before returning. Return must be performed with an iret instruction.

Repository:
  rL LLVM

http://reviews.llvm.org/D12498

Files:
  include/llvm/IR/CallingConv.h
  lib/AsmParser/LLLexer.cpp
  lib/AsmParser/LLParser.cpp
  lib/AsmParser/LLToken.h
  lib/IR/AsmWriter.cpp
  lib/Target/X86/X86CallingConv.td
  lib/Target/X86/X86ExpandPseudo.cpp
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86ISelLowering.h
  lib/Target/X86/X86InstrControl.td
  lib/Target/X86/X86InstrInfo.td
  lib/Target/X86/X86InstrSystem.td
  lib/Target/X86/X86RegisterInfo.cpp
  test/CodeGen/X86/x86-intrcc.ll

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