[PATCH] D75843: [ARM,CDE] Implement CDE feature test macros

[Mikhail Maltsev via Phabricator via cfe-commits]

miyuki created this revision.
miyuki added reviewers: simon_tatham, dmgreen, ostannard, MarkMurrayARM.
Herald added subscribers: cfe-commits, danielkiss, kristof.beyls.
Herald added a project: clang.

This patch implements feature test macros for the CDE extension
according to the upcoming ACLE specification.

The following 2 macros are being added:

- __ARM_FEATURE_CDE - defined as '1' when any coprocessor is configured as a CDE coprocessor
- __ARM_FEATURE_CDE_COPROC - defined as an 8-bit mask, each bit of the mask corresponds to a coprocessor and is set when the corresponding coprocessor is configured as CDE (and cleared otherwise).

The patch also exposes the value of __ARM_FEATURE_CDE_COPROC in the
target-independent method TargetInfo::getARMCDECorpocMask, the method
will be used in follow-up patches implementing semantic checks of CDE
intrinsics (we want to diagnose the cases when CDE intrinsics are used
with coprocessors that are not configured as CDE).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75843

Files:
  clang/include/clang/Basic/TargetInfo.h
  clang/lib/Basic/TargetInfo.cpp
  clang/lib/Basic/Targets/ARM.cpp
  clang/lib/Basic/Targets/ARM.h
  clang/test/Preprocessor/arm-target-features.c

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