Update the README.txt with newer information, add a link to the Emscripten
page explaining the current easiest way to use the LLVM wasm backend, and
mention that other ways of using the LLVM wasm backend are in development.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285215 91177308-0d34-0410-b5e6-96231b3b80d8
The p2align operand of a load/store is encoded before the offset
operand; reorder the MachineInstr operands accordingly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285044 91177308-0d34-0410-b5e6-96231b3b80d8
This changes locals from being declared by the emitLocal hook in
WebAssemblyTargetStreamer, rather than with an instruction. After exploring
the infastructure in LLVM more, this seems to make more sense since
declaring locals doesn't use an encoded opcode.
This also adds more 0xd opcodes, type encodings, and miscellaneous
binary encoding bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285040 91177308-0d34-0410-b5e6-96231b3b80d8
CFGStackify differentiates between END_LOOP and END_BLOCK, but wasm
itself doesn't. For now, just use the same opcode for both.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285016 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Need to reorder the operands to have the callee as the last argument.
Adds a pseudo-instruction, and a pass to lower it into a real
call_indirect.
This is the first of two options for how to fix the problem.
Reviewers: dschuff, sunfish
Subscribers: jfb, beanz, mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D25708
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284840 91177308-0d34-0410-b5e6-96231b3b80d8
All of these existed because MSVC 2013 was unable to synthesize default
move ctors. We recently dropped support for it so all that error-prone
boilerplate can go.
No functionality change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284721 91177308-0d34-0410-b5e6-96231b3b80d8
WebAssembly has officially switched from being an AST to being a stack
machine. Update various bits of terminology and README.md entries
accordingly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283154 91177308-0d34-0410-b5e6-96231b3b80d8
WebAssembly documentation consistently says "f32" rather than "fp32" to
describe 32-bit floating-point.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283146 91177308-0d34-0410-b5e6-96231b3b80d8
Register stackification currently checks VNInfo for changes. Make that
more accurate by testing each intervening instruction for any other defs
to the same virtual register.
Patch by Jacob Gravelle
Differential Revision: https://reviews.llvm.org/D24942
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282886 91177308-0d34-0410-b5e6-96231b3b80d8
The main change is to return the code size from
InsertBranch/RemoveBranch.
Patch mostly by Tim Northover
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281505 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
I want to separate out the notions of invariance and dereferenceability
at the MI level, so that they correspond to the equivalent concepts at
the IR level. (Currently an MI load is MI-invariant iff it's
IR-invariant and IR-dereferenceable.)
First step is renaming this function.
Reviewers: chandlerc
Subscribers: MatzeB, jfb, llvm-commits
Differential Revision: https://reviews.llvm.org/D23370
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281125 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: This patch adds asm.js-style setjmp/longjmp handling support for WebAssembly. It also uses JavaScript's try and catch mechanism.
Reviewers: jpp, dschuff
Subscribers: jfb, dschuff
Differential Revision: https://reviews.llvm.org/D24121
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280415 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: This patch adds asm.js-style setjmp/longjmp handling support for WebAssembly. It also uses JavaScript's try and catch mechanism.
Reviewers: jpp, dschuff
Subscribers: jfb, dschuff
Differential Revision: https://reviews.llvm.org/D23928
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280302 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
If the register has a negative value then unsigned overflow will occur;
this case is sometimes even created intentionally by LSR. For now
disable GA+reg folding. Fixes PR29127
Differential Revision: https://reviews.llvm.org/D24053
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280285 91177308-0d34-0410-b5e6-96231b3b80d8
Rename AllVRegsAllocated to NoVRegs. This avoids the connotation of
running after register and simply describes that no vregs are used in
a machine function. With that we can simply compute the property and do
not need to dump/parse it in .mir files.
Differential Revision: http://reviews.llvm.org/D23850
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279698 91177308-0d34-0410-b5e6-96231b3b80d8
The names of the tablegen defs now match the names of the ISD nodes.
This makes the world a slightly saner place, as previously "fround" matched
ISD::FP_ROUND and not ISD::FROUND.
Differential Revision: https://reviews.llvm.org/D23597
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279129 91177308-0d34-0410-b5e6-96231b3b80d8
The WebAssemly spec removing the return value from store instructions, so
remove the associated optimization from LLVM.
This patch leaves the store instruction operands in place for now, so stores
now always write to "$drop"; these will be removed in a seperate patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279100 91177308-0d34-0410-b5e6-96231b3b80d8
This patch changes the code structure of
WebAssemblyLowerEmscriptenException pass to support both exception
handling and setjmp/longjmp. It also changes the name of the pass and
the source file.
1. Change the file/pass name to WebAssemblyLowerEmscriptenExceptions ->
WebAssemblyLowerEmscriptenEHSjLj to make it clear that it supports both
EH and SjLj
2. List function / global variable names at the top so they
can be changed easily
3. Some cosmetic changes
Patch by Heejin Ahn
Differential Revision: https://reviews.llvm.org/D23588
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279075 91177308-0d34-0410-b5e6-96231b3b80d8
This reverts commit r278967, since the new test is failing when you
don't build the WebAssembly target (most people, since it's
off-by-default).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278973 91177308-0d34-0410-b5e6-96231b3b80d8
This patch adds -emscripten-cxx-exceptions-whitelist option to
WebAssemblyLowerEmscriptenExceptions pass. This options is the list of
function names in which Emscripten-style exception handling is enabled.
This is to support emscripten's EXCEPTION_CATCHING_WHITELIST which
exists because of the performance impact of emscripten's non-zero-cost
EH method.
Patch by Heejin Ahn
Differential Revision: https://reviews.llvm.org/D23292
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278171 91177308-0d34-0410-b5e6-96231b3b80d8
* Delete extra '_' prefixes from JS library function names. fixImports()
function in JS glue code deals with this for wasm.
* Change command-line option names in order to be consistent with
asm.js.
* Add missing lowering code for llvm.eh.typeid.for intrinsics
* Delete commas in mangled function names
* Fix a function argument attributes bug. Because we add the pointer to
the original callee as the first argument of invoke wrapper, all
argument attribute indices have to be incremented by one.
Patch by Heejin Ahn
Differential Revision: https://reviews.llvm.org/D23258
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278081 91177308-0d34-0410-b5e6-96231b3b80d8
