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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/99312] New: __ARM_ARCH is not implemented correctly when
 compiled with -march=armv8.1-a
Date: Sun, 28 Feb 2021 19:48:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99312

            Bug ID: 99312
           Summary: __ARM_ARCH is not implemented correctly when compiled
                    with -march=3Darmv8.1-a
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

The latest ACLE dated Q3 2020 has the following for how __ARM_ARCH should be
defined for ARMv8.1-a and above:
For an Arm architecture ArmvX.Y, __ARM_ARCH =3D X * 100 + Y. E.g.
for Armv8.1 __ARM_ARCH =3D 801.
----- CUT ----
Currently GCC just does 8.=