This is variant of SIMARM build (ARM target and non-ARM host) but with a
word size mismatch (32-bit target and 64-bit host). We only expect to
build gen_snapshot binary in this mode.
This is the first step towards enabling AOT compilation targeting ARM
using 64-bit gen_snapshot binary.
This change also introduces --gen-snapshot flag for test.py which allows
to specify which gen_snapshot binary should be used for running tests.
Expected workflow with SIMARM_X64 build:
$ tools/build.py -a simarm_x64 -m release gen_snapshot
$ tools/build.py -a simarm -m release dart_precompiled_runtime
vm_platform
$ tools/test.py -a simarm -m release -c dartkp --gen-snapshot
out/ReleaseSIMARM_X64/gen_snapshot
Note that our ARM simulator can't be built as a 64-binary so we are
going to be using SIMARM runtime to test AOT compiled code produced by
SIMARM_X64 binary.
Issue https://github.com/dart-lang/sdk/issues/36839
Issue https://github.com/flutter/flutter/issues/22598
Change-Id: Id003900e8b46fc9d57975ab82b0c21852a176079
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/100968
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Vyacheslav Egorov
125c5cbf4a