Commit Graph

7 Commits

Author SHA1 Message Date
Thomas Lively 86e73f51d7 [WebAssembly] Improve feature validation error messages
Summary:
Add the names of the input files responsible for each error to the
messages.

Reviewers: sbc100, azakai

Subscribers: dschuff, jgravelle-google, aheejin, sunfish, jfb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D62704

llvm-svn: 362162
2019-05-30 21:57:23 +00:00
Andrew Ng e6b6ab2c66 [LLD] Restore tests that use "-" as output
No longer require workarounds for output to "-" (stdout) for
Windows. These workarounds were just hiding the actual problem which has
been fixed in r357058.

Differential Revision: https://reviews.llvm.org/D59824

llvm-svn: 357072
2019-03-27 15:30:52 +00:00
Thomas Lively 82de51a3ae Reland "[WebAssembly] Add linker options to control feature checking"
Do not pipe binary data between processes in lit tests this time,
since it turns out that can break on Windows.

This reverts commit 84c8652fc3.

llvm-svn: 356975
2019-03-26 04:11:05 +00:00
Thomas Lively 84c8652fc3 Revert "[WebAssembly] Add linker options to control feature checking"
This reverts commit 5991328c96.

llvm-svn: 356932
2019-03-25 18:10:26 +00:00
Thomas Lively 5991328c96 [WebAssembly] Add linker options to control feature checking
Summary:
Adds --check-features and --no-check-features. The default for now is
to enable the checking, but this might change in the future.

Also adds --features=foo,bar for precisely controlling the features
used in the output binary.

Depends on D59173.

Reviewers: sbc100, aheejin

Subscribers: dschuff, jgravelle-google, sunfish, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59274

llvm-svn: 356805
2019-03-22 20:43:06 +00:00
Reid Kleckner 05ea3a6be3 Fix lld wasm tests after r356610
Apparently stdout is not opened in binary mode, so the executable gets
corrupted when piping to obj2yaml.

llvm-svn: 356694
2019-03-21 18:24:05 +00:00
Thomas Lively f6f4f84378 [WebAssembly] Target features section
Summary:
Implements a new target features section in assembly and object files
that records what features are used, required, and disallowed in
WebAssembly objects. The linker uses this information to ensure that
all objects participating in a link are feature-compatible and records
the set of used features in the output binary for use by optimizers
and other tools later in the toolchain.

The "atomics" feature is always required or disallowed to prevent
linking code with stripped atomics into multithreaded binaries. Other
features are marked used if they are enabled globally or on any
function in a module.

Future CLs will add linker flags for ignoring feature compatibility
checks and for specifying the set of allowed features, implement using
the presence of the "atomics" feature to control the type of memory
and segments in the linked binary, and add front-end flags for
relaxing the linkage policy for atomics.

Reviewers: aheejin, sbc100, dschuff

Subscribers: jgravelle-google, hiraditya, sunfish, mgrang, jfb, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59173

llvm-svn: 356610
2019-03-20 20:26:45 +00:00