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16 Commits

Author SHA1 Message Date
Sam Clegg 262e09018b [WebAssembly] Remove final -wasm component of target triple. NFC. 
This has been the default for a while now.

llvm-svn: 332009
 2018-05-10 17:59:41 +00:00
Sam Clegg 752494bfe3 [WebAssembly] Check function signatures by default 
But only produce a warning (for now) unless --fatal-warnings
is passed.

Differential Revision: https://reviews.llvm.org/D46484

llvm-svn: 331574
 2018-05-05 01:23:07 +00:00
Nicholas Wilson 5639da89a9 [WebAssembly] Reorder synthetic functions to come first 
This matches the existing ordering that's been there for globals
for a while (__stack_pointer coming first).

Differential Revision: https://reviews.llvm.org/D44333

llvm-svn: 327286
 2018-03-12 15:44:07 +00:00
Nicholas Wilson 4cdf5b8fa0 [WebAssembly] Reorder exports to match symbol table order 
This fixes a TODO introduced in rLLD325861.

Differential Revision: https://reviews.llvm.org/D43877

llvm-svn: 326424
 2018-03-01 09:38:02 +00:00
Sam Clegg 99eb42c0c5 [WebAssembly] Remove DataSize from linking metadata 
This means we don't need to write the linking metadata section
at all for executable (non-relocatable) output.

Differential Revision: https://reviews.llvm.org/D42869

llvm-svn: 326268
 2018-02-27 23:58:03 +00:00
Sam Clegg 9310297438 [WebAssembly] Add explicit symbol table 
This change modified lld to in response the llvm change which
moved to a more explicit symbol table in the object format.

Based on patches by Nicholas Wilson:
 1. https://reviews.llvm.org/D41955
 2. https://reviews.llvm.org/D42585

The primary difference that we see in the test output is that
for relocatable (-r) output we now have symbol table which
replaces exports/imports and globals.

See: https://github.com/WebAssembly/tool-conventions/issues/38
Differential Revision: https://reviews.llvm.org/D43264

llvm-svn: 325861
 2018-02-23 05:08:53 +00:00
Rui Ueyama f05124e60c Use wasm-ld instead of "lld -flavor wasm". 
Invoking lld as ld.lld, ld.ld64, lld-link or wasm-ld is preferred
than invoking lld as lld and pass an -flavor option. We have "lld"
file mostly for historical reasons.

Differential Revision: https://reviews.llvm.org/D43407

llvm-svn: 325405
 2018-02-16 22:58:02 +00:00
Sam Clegg 37a4a8a4b1 [WebAssembly] Add __data_end link-sythentic symbol. 
This is similar to _end (See https://linux.die.net/man/3/edata for more)
but using our own unique name since our use cases will most likely be
different and we want to keep our options open WRT to memory layout.

This change will allow is to remove the DataSize from the linking
metadata section which is currently being used by emscripten to derive
the end of the data.

Differential Revision: https://reviews.llvm.org/D42867

llvm-svn: 324443
 2018-02-07 03:04:53 +00:00
Sam Clegg 279c850cf2 [WebAssembly] Fix signature mismatches in test code 
Pass --check-signatures to test executions of lld and
fix resulting errors.

Differential Revision: https://reviews.llvm.org/D42661

llvm-svn: 324042
 2018-02-02 00:30:03 +00:00
Sam Clegg 70683b2f75 [WebAssembly] Use inline target tripple in test cases 
This is somewhat preferable since (in many cases) it allows llc
to be run directly on the .ll files without having to pass the
`-mtriple` argument.

Differential Revision: https://reviews.llvm.org/D42438

llvm-svn: 323299
 2018-01-24 03:29:47 +00:00
Rui Ueyama b9b1a522ea Remove trailing whitespace. 
llvm-svn: 323287
 2018-01-24 00:22:53 +00:00
Sam Clegg 0f0a428738 [WebAssembly] Remove special handling of entry point export. 
Its much easier to export it via setHidden(false), now that
that is a thing.

As a side effect the start function is not longer always exports first
(becuase its being exported just like all the other function).

Differential Revision: https://reviews.llvm.org/D42321

llvm-svn: 323025
 2018-01-20 01:44:45 +00:00
Sam Clegg 1963d71cb8 [WebAssembly] Simplify generation of "names" section 
Simplify generation of "names" section by simply iterating
over the DefinedFunctions array.

This even fixes some bugs, judging by the test changes required.
Some tests are asserting that functions are named multiple times,
other tests are asserting that the "names" section contains the
function's alias rather than its original name

Patch by Nicholas Wilson!

Differential Revision: https://reviews.llvm.org/D42076

llvm-svn: 322751
 2018-01-17 20:19:04 +00:00
Sam Clegg 51bcdc2d49 [WebAssembly] Define __heap_base global 
This is an immutable exported global representing
the start of the heap area.  It is a page aligned.

Differential Revision: https://reviews.llvm.org/D42030

llvm-svn: 322609
 2018-01-17 01:34:31 +00:00
Sam Clegg 5068685678 [WebAssembly] Create synthetic __wasm_call_ctors function 
This change create a new synthetic function in the final
output binary which calls the static constructors in sequence.

See: https://github.com/WebAssembly/tool-conventions/issues/25

Differential Revision: https://reviews.llvm.org/D41893

llvm-svn: 322388
 2018-01-12 18:35:13 +00:00
Sam Clegg 408064ef1e [WebAssembly] Don't allow functions to be named more than once 
Even though a function can have multiple names in the
linking standards (i.e. due to aliases), there can only
be one name for a given function in the NAME section.

Differential Revision: https://reviews.llvm.org/D41975

llvm-svn: 322383
 2018-01-12 17:56:15 +00:00