ARM: introduce llvm.arm.undefined intrinsic

Description

ARM: introduce llvm.arm.undefined intrinsic

This intrinsic permits the emission of platform specific undefined sequences.
ARM has reserved the 0xde opcode which takes a single integer parameter (ignored
by the CPU). This permits the operating system to implement custom behaviour on
this trap. The llvm.arm.undefined intrinsic is meant to provide a means for
generating the target specific behaviour from the frontend. This is
particularly useful for Windows on ARM which has made use of a series of these
special opcodes.

Details

Committed
compnerdMay 21 2014, 9:46 PM
Parents
rL209389: [C++11] Use 'nullptr'. Frontend edition.
Branches
Unknown
Tags
Unknown