Currently running official dart `linux/arm/v7` container image on x86_64 with QEMU results in `Unrecognized ARM CPU architecture`.
This is due to QEMU reporting host `/proc/cpuinfo` instead of the emulated architecture.
Checking `uname` in addition to `/proc/cpuinfo` would make `linux/arm/v7` build work consistently regardless of whether `--use-qemu` is supplied during SDK build time.
TEST=running the qemu bot
TEST=ran the ffi/hardfp_test.dart locally both in AOT and JIT mode.
Closes https://github.com/dart-lang/sdk/pull/48665https://github.com/dart-lang/sdk/pull/48665
GitOrigin-RevId: d1414d747152d048f3ecaadfd0cd3356ce7a2205
Change-Id: If8b42a700d55e83fea0ee0035848308a3211ec43
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/238841
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Implements a backend targeting RV32GC and RV64GC, based on Linux standardizing around GC. The assembler is written to make it easy to disable usage of C, but because the sizes of some instruction sequences are compile-time constants, an additional build configuration would need to be defined to make use of it.
The assembler and disassembler cover every RV32/64GC instruction. The simulator covers all instructions except accessing CSRs and the floating point state accessible through such, include accrued exceptions and dynamic rounding mode.
Quirks:
- RISC-V is a compare-and-branch architecture, but some existing "architecture-independent" parts of the Dart compiler assume a condition code architecture. To avoid rewriting these parts, we use a peephole in the assembler to map to compare-and-branch. See Assembler::BranchIf. Luckily nothing depended on taking multiple branches on the same condition code set.
- There are no hardware overflow checks, so we must use Hacker's Delight style software checks. Often these are very cheap: if the sign of one operand is known, a single branch is needed.
- The ranges of RISC-V branches and jumps are such that we use 3 levels of generation for forward branches, instead of the 2 levels of near and far branches used on ARM[64]. Nearly all code is handled by the first two levels with 20-bits of range, with enormous regex matchers triggering the third level that uses aupic+jalr to get 32-bits of range.
- For PC-relative calls in AOT, we always generate auipc+jalr pairs with 32-bits of range, so we never generate trampolines.
- Only a subset of registers are available in some compressed instructions, so we assign the most popular uses to these registers. In particular, THR, TMP[2], CODE and PP. This has the effect of assigning CODE and PP to volatile registers in the C calling convention, whereas they are assigned preserved registers on the other architectures. As on ARM64, PP is untagged; this is so short indices can be accessed with a compressed instruction.
- There are no push or pop instructions, so combining pushes and pops is preferred so we can update SP once.
- The C calling convention has a strongly aligned stack, but unlike on ARM64 we don't need to use an alternate stack pointer. The author ensured language was added to the RISC-V psABI making the OS responsible for realigning the stack pointer for signal handlers, allowing Dart to leave the stack pointer misaligned from the C calling convention's point of view until a foreign call.
- We don't bother with the link register tracking done on ARM[64]. Instead we make use of an alternate link register to avoid inline spilling in the write barrier.
Unimplemented:
- non-trivial FFI cases
- Compressed pointers - No intention to implement.
- Unboxed SIMD - We might make use of the V extension registers when the V extension is ratified.
- BigInt intrinsics
TEST=existing tests for IL level, new tests for assembler/disassembler/simulator
Bug: https://github.com/dart-lang/sdk/issues/38587
Bug: https://github.com/dart-lang/sdk/issues/48164
Change-Id: I991d1df4be5bf55efec5371b767b332d37dfa3e0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/217289
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Lets AppJIT training happen directly, instead of the absurdity of arm64 (hardware) running x64 (Rosetta) running arm64 (VM's simulator).
Change-Id: Idbf82530d946099db80c550070257c4c6ead31e1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/214763
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Reduces VM code size by about 15k.
Change-Id: Icaa1a5278855f88f7ce702802d6aaa62639cfac5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/205120
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
This reverts commit fc9383ed41.
Reason for revert: After discussion with athom, the breakage is a known temporary situation.
Original change's description:
> Revert "[build] Use Fuchsia windows clang toolchain"
>
> This reverts commit e479049467.
>
> Reason for revert: Broke build on vm-fuchsia-release-x64.
>
> Original change's description:
> > [build] Use Fuchsia windows clang toolchain
> >
> > Change-Id: Ie04039c736f40174cc45a61aa637a88fa53d9024
> > Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/201862
> > Reviewed-by: Alexander Thomas <athom@google.com>
>
> TBR=aam@google.com,athom@google.com
>
> Change-Id: I3f1ce2c30bf0600b025bc95a051e569660e140c0
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/204582
> Reviewed-by: Tess Strickland <sstrickl@google.com>
> Commit-Queue: Tess Strickland <sstrickl@google.com>
# Not skipping CQ checks because this is a reland.
Change-Id: I0efe29d2dc11a2f3e65d65d2f2eaecc4c827490a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/204583
Reviewed-by: Tess Strickland <sstrickl@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
This removes warnings like these:
```
ld: warning: object file (../../buildtools/mac-x64/clang/bin/../lib/libc++.a(memory.cpp.o)) was built for newer OSX version (10.13) than being linked (10.8)
```
These warnings seem to be harmless but may indicate that our builds are
no longer working below macOS 10.13. On developer machines, these
warnings don't seem to occur. We don't test on versions older than 10.13
so we can't guarantee that the Dart SDK works on those.
https://github.com/dart-lang/sdk/issues/40850
Change-Id: I1b146803605daa9e42d4283722efb39ecd66f0ab
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146803
Reviewed-by: Ryan Macnak <rmacnak@google.com>
* Migrate to python3; drop python support.
* Update Windows toolchain support.
* Remove some unused methods.
* Python 2.7 is still needed on Windows.
* Update gsutil to a version that supports python3.
Fixes: https://github.com/dart-lang/sdk/issues/28793
TEST=Manually tested common user journeys.
Change-Id: I663a22b237a548bb82dc2e601e399e3bc3649211
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192182
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Also includes some example changes using C++14/C++17 features.
TEST=vm/cc/BitField_Assert
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-win-release-x64-try,vm-kernel-precomp-mac-release-simarm64-try,vm-kernel-precomp-linux-release-x64-try,dart-sdk-win-try,vm-kernel-win-release-x64-try,vm-kernel-win-release-ia32-try,dart-sdk-mac-try,vm-kernel-mac-release-x64-try
Change-Id: Icf5c5267431daf9cea2e61b67131021557675f3c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/192183
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
Last roll was from 6/18/2020.
Allows to enable "implicit-int-float-conversion" warning in the dart codebase.
Change-Id: Ida1a3a477e5bc45993dc10e0c3db410265a005ba
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/191300
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
This is needed to update clang dependency as there are errors being revealed in current zlib with updated clang.
Change-Id: I916be87dec5195f159ae002d3207788b3bf9bda7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/183042
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
zlib dependency had to be updated to pick up fixes for errors revealed with updated clang.
Change-Id: I30a65faf532782dcb595c26e21c81c521bd0d074
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182667
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
The sources assignment filter is considered a misfeature of gn
and is planned for removal (see discussion at [1]).
Convert dart BUILD.gn rules to manually filter the files that
are build using explicit `if` expressions. Remove obsolete call
to set_sources_assignment_filter() to filter '*_test.*' files
as no such files are present in the variables used to build the
`sources` value.
[1]: https://groups.google.com/a/chromium.org/g/gn-dev/c/oQcYStl_WkI/m/roukYTxSDAAJ
Bug: gn:125
Change-Id: I591fbb746cf694f7d2a5a330f81652380acf5c11
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166629
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Stack-alignment flags are not supported by clang-cl, warning messages produced by clang-cl throw off gomas compiler version detection.
Change-Id: I259ed57e72f6c26eb1f01ac2c6dd49ec2e90978c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/157100
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
Everything in the build/fuchsia director (except for tests.cmx) was
copied and modified from:
https://fuchsia.googlesource.com/samples/+/refs/heads/master/build
This doesn't include any tests yet, but its runnable on the emulator.
Change-Id: Id64ae71062447c789ca4d10ed3a4a09e0a6d7b99
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152589
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
It relies on flutter copy of clang distribution, same one that is used to build flutter/engine.
It addressed several deprecated warnings from clang compiler for functions like strdup, unlink, etc.
It allows few warnings still since they are triggered in third_party sources.
Change-Id: Ieb13792c011438d46dbbc0fa030e1b5e4ea14315
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/142704
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This reverts commit 4ce18ab931.
Reason for revert: bad merge, caused build breakages in flutter/engine
Original change's description:
> Add an --os=fuchsia option to build.py:
>
> tools/build.py --os=fuchsia runtime create_sdk
>
> This is analogous to --os=android. It cross compiles from Linux x64 to
> Fuchsia.
>
> A lot of the build rules are just slightly different between the existing
> Fuchsia build rules used by Flutter, and the ones added by GN SDK. For
> example "$fuchsia_sdk_root/pkg:fdio" is now "$fuchsia_sdk_root/pkg/fdio".
> So to support this I had to add a new variable, using_fuchsia_gn_sdk,
> analogous to using_fuchsia_sdk. Flutter will need to set this to false.
>
> Change-Id: Ief275d65f30a42a801607de93cf2d27a1fe825dd
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150689
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Commit-Queue: Liam Appelbe <liama@google.com>
TBR=rmacnak@google.com,asiva@google.com,liama@google.com,kaushikiska@google.com,matthewcarroll@google.com
Change-Id: If01ee34eba906c55f2d56ba650748a86e81e701c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151321
Auto-Submit: George Wright <wrightgeorge@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
Reviewed-by: Liam Appelbe <liama@google.com>
tools/build.py --os=fuchsia runtime create_sdk
This is analogous to --os=android. It cross compiles from Linux x64 to
Fuchsia.
A lot of the build rules are just slightly different between the existing
Fuchsia build rules used by Flutter, and the ones added by GN SDK. For
example "$fuchsia_sdk_root/pkg:fdio" is now "$fuchsia_sdk_root/pkg/fdio".
So to support this I had to add a new variable, using_fuchsia_gn_sdk,
analogous to using_fuchsia_sdk. Flutter will need to set this to false.
Change-Id: Ief275d65f30a42a801607de93cf2d27a1fe825dd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150689
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
Previously, we didn't use a sysroot for the host toolchain used to
create the host_tool used in dart_actions. The compile action then
failed on the new goma backend causing long build times.
Before (dart-sdk-linux-try/429, ~38 mins):
finished=10627 cache_hit=7334 retry=3277 fail=3277
After (dart-sdk-linux-try/430, ~12 mins):
finished=10625 cache_hit=7352 retry=0 fail=0
Change-Id: Iebf967be6eb67c3056f766839a3d58d18fc608f5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150421
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Auto-Submit: Alexander Thomas <athom@google.com>
Change-Id: I6634dc10fdc8d7523562c0fcc20e3561eb580acf
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146023
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
This works around bugs in UndefinedBehaviorSanitizer and Clang.
Bug: b/28638298
Change-Id: I6be595f9664516019d28017d24559583a1ae3a21
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/144354
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
The flag "mac_use_goma_rbe" creates a symlink to the Xcode SDK
directory, under $root_build_dir/sdk/xcode_links.
e.g. the -isysroot arg in the build command becomes:
-isysroot sdk/xcode_links/MacOSX10.15.sdk
This is based on a similar solution for Chromium iOS builders:
http://crrev.com/c/1946174http://crrev.com/c/2102649
Bug: b/151697301
Change-Id: Ie65d3ae2b98da5977ad0f5a75f865c838bbbb963
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/139782
Commit-Queue: Simon Que <sque@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
doesn't show these formatting changes as diffs.
Change-Id: I69ccbf4adabc66d88371cece785a2c1bce60f133
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/138962
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Normally we consult /proc to determine the host architecture. However, this
reports the actual host architecture, not the QEMU-simulated one.
Also, GDB cannot debug position-independent executables in QEMU, so we disable
PIE when compiling for execution in QEMU.
Pass '--use-qemu' to 'gn.py' to build for QEMU.
Change-Id: Ib125127ceb0582b66754cfc0da22e09d224ee1e9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/125267
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Our //build/config/BUILDCONFIG.gn isn't used for Flutter, so we must
put the default version where the Flutter build can see it.
Change-Id: I99afc99209b3721c48aa56ef413910d34df1bb8c
Cq-Include-Trybots: luci.dart.try:flutter-engine-linux-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/120580
Reviewed-by: Teagan Strickland <sstrickl@google.com>
Commit-Queue: Teagan Strickland <sstrickl@google.com>
This treats whether or not to use the forked NNBD SDK as a build flag
similar to mode or architecture. When this flag is passed, it appends
"NNBD" to the main output directory, like xcodebuild/ReleaseX64NNBD.
It also defines a "use_nnbd" flag that is available inside BUILD.gn
files to determine whether or not to use the forked SDK. This flag
currently isn't used. Implementation teams will need to edit their
build steps to take that into account.
In order to use this mode on the bots, we'll need to tweak the bot
scripts to figure out whether the mode is enabled or not. There are a
couple of TODOs in the Python scripts for that. I'm not sure how that
should be specified in dart_sdk.py.
This CL does not remove my previous change to allow building the NNBD
fork next to dart-sdk in the same root output directory. I'll revert
those changes in a different CL once this one lands.
Change-Id: I3bd28f273106ee90caf9474b2fadad120b2c2d0b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/119602
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
This allows zlib_bench to link properly and we can use the "all" build
target again.
Change-Id: I95ae0c41fb988245dd472da81cb06424d1209786
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/117212
Reviewed-by: Nicholas Shahan <nshahan@google.com>
Commit-Queue: Mayank Patke <fishythefish@google.com>
Issue https://github.com/dart-lang/sdk/issues/38141
On Windows and OSX, we dynamically link against libc++, so there is no issue.
On Android we already hide symbols from libc++.
Change-Id: I17debc4d0efec3cebc203672333afb44390b0e0b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/115403
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Samir Jindel <sjindel@google.com>
- Add `.style.yapf` with configuration to use Google style.
- Run `yapf` on all `.py` files in this repo.
- Manually fix one trailing space in a doc string.
- Run `git cl format runtime` to satisfy presubmit.
Change-Id: I7e6bd11e91f07926b9188362599af398551eed79
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/111600
Commit-Queue: Nate Bosch <nbosch@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Otherwise executables simply does not link because C++ std lib we are
using has dependency on dl (through libunwind).
Fixes https://github.com/dart-lang/sdk/issues/35631
Note: this follows what newer versions of build configs do. See for
example one used in Flutter build root[1]
[1] 224ebe0ada/build/config/BUILD.gn (L121)
Change-Id: I405c820db4363a59230d7ba4f93d760a8cbbabc3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/103627
Reviewed-by: Teagan Strickland <sstrickl@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
