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Author SHA1 Message Date
Wang, Pengfei e8bce83996 [X86] Enable compilation of user interrupt handlers. 
Add __uintr_frame structure and use UIRET instruction for functions with
x86 interrupt calling convention when UINTR is present.

Reviewed By: LuoYuanke

Differential Revision: https://reviews.llvm.org/D99708
 2021-04-23 11:43:57 +08:00
Tianqing Wang be39a6fe6f [X86] Add User Interrupts(UINTR) instructions 
For more details about these instructions, please refer to the latest
ISE document:
https://software.intel.com/en-us/download/intel-architecture-instruction-set-extensions-programming-reference.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D89301
 2020-10-22 17:33:07 +08:00