Hi All, This patch implements the __yield(), __wfe(), __wfi(), __sev() and __sevl() ACLE (hint) intrinsics for AArch64 as yield, wfe, wfi, sev and sevl (hint) instructions respectively.
The instructions are documented in the ArmARM[1] and the intrinsics specification are published on the Arm website [2]. [1] https://developer.arm.com/docs/ddi0487/latest/arm-architecture-reference-manual-armv8-for-armv8-a-architecture-profile [2] https://developer.arm.com/docs/ihi0053/latest/arm-c-language-extensions-21-architecture-specification Bootstrapped on aarch64-none-linux-gnu and regression tested on aarch64-none-elf with no regressions. Ok for trunk? If ok, could someone please commit the patch on my behalf, I don't have commit rights. Thanks, Srinath gcc/ChangeLog: 2019-05-29 Srinath Parvathaneni <srinath.parvathan...@arm.com> * config/aarch64/aarch64.md (UNSPECV_YIELD): New volatile unspec. (UNSPECV_WFE): Likewise. (UNSPECV_WFI): Likewise. (UNSPECV_SEV): Likewise. (UNSPECV_SEVL): Likewise. (yield): New pattern name. (wfe): Likewise. (wfi): Likewise. (sev): Likewise. (sevl): Likewise. * config/aarch64/aarch64-builtins.c (aarch64_builtins): AARCH64_BUILTIN_YIELD: New builtin. AARCH64_BUILTIN_WFE: Likewise. AARCH64_BUILTIN_WFI: Likewise. AARCH64_BUILTIN_SEV: Likewise. AARCH64_BUILTIN_SEVL: Likewise. (aarch64_init_syshintop_builtins): New function. (aarch64_init_builtins): New call statement. (aarch64_expand_builtin): New case. * config/aarch64/arm_acle.h (__yield): New inline function. (__sev): Likewise. (__sevl): Likewise. (__wfi): Likewise. (__wfe): Likewise. gcc/testsuite/ChangeLog: 2019-05-29 Srinath Parvathaneni <srinath.parvathan...@arm.com> * gcc.target/aarch64/acle/hint-1.c: New test.
rb10372.patch
Description: rb10372.patch
