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* [WebAssembly] Define WebAssembly-specific relocation codes.Dan Gohman2016-01-111-1/+1
| | | | | | | | Currently WebAssembly has two kinds of relocations; data addresses and function addresses. This adds ELF relocations for them, as well as an MC symbol kind to indicate which type of relocation is needed. llvm-svn: 257416
* [WebAssembly] Add -m:e to the target triple.Dan Gohman2016-01-071-1/+1
| | | | | | | This enables ELF-style name mangling, which primarily means using ".L" for private symbols. llvm-svn: 257020
* [WebAssembly] Add type prefixes to call instructionsDan Gohman2015-12-141-1/+1
| | | | | | | | | Add return type information to call and call_indirect instructions. This allows them to be disambiguated without knowledge of the callee. Differential Revision: http://reviews.llvm.org/D15484 llvm-svn: 255565
* [WebAssembly] Don't special-case call operand order.Dan Gohman2015-11-231-1/+1
| | | | | | | | With the '=' suffix now indicating which operands are output operands, it's no longer as important to distinguish between a call's inputs and its outputs using operand ordering, so we can go back to printing them in the normal order. llvm-svn: 253925
* [WebAssembly] Suffix output operands with '='.Dan Gohman2015-11-231-1/+1
| | | | | | | | This distinguishes input operands from output operands. This is something of a syntactic experiment to see whether the mild amount of clutter this adds is outweighed by the extra information it conveys to the reader. llvm-svn: 253922
* [WebAssembly] Emit .param, .result, and .local through MC.Dan Gohman2015-11-231-4/+2
| | | | | | This eliminates one of the main remaining uses of EmitRawText. llvm-svn: 253878
* [WebAssembly] Enable register coloring and register stackifying.Dan Gohman2015-11-181-4/+2
| | | | | | | | | | | | | | | | This also takes the push/pop syntax another step forward, introducing stack slot numbers to make it easier to see how expressions are connected. For example, the value pushed in $push7 is popped in $pop7. And, this begins an experiment with making get_local and set_local implicit when an operation directly uses or defines a register. This greatly reduces clutter. If this experiment succeeds, it may make sense to do this for const instructions as well. And, this introduces more special code for ARGUMENTS; hopefully this code will soon be obviated by proper support for live-in virtual registers. llvm-svn: 253465
* [WebAssembly] Make indentation consistent with the other testcases. NFC.Dan Gohman2015-11-141-2/+2
| | | | llvm-svn: 253149
* [WebAssembly] Introduce a new pseudo-operand for unused expression results.Dan Gohman2015-11-131-0/+9
| | | | llvm-svn: 252975
* [WebAssembly] Reapply r252858, with svn add for the new file.Dan Gohman2015-11-121-6/+2
| | | | | | | | | | | | | | | | | | | | | | Switch to MC for instruction printing. This encompasses several changes which are all interconnected: - Use the MC framework for printing almost all instructions. - AsmStrings are now live. - This introduces an indirection between LLVM vregs and WebAssembly registers, and a new pass, WebAssemblyRegNumbering, for computing a basic the mapping. This addresses some basic issues with argument registers and unused registers. - The way ARGUMENT instructions are handled no longer generates redundant get_local+set_local for every argument. This also changes the assembly syntax somewhat; most notably, MC's printing does not use sigils on label names, so those are no longer present, and push/pop now have a sigil to keep them unambiguous. The usage of set_local/get_local/$push/$pop will continue to evolve significantly. This patch is just one step of a larger change. llvm-svn: 252910
* Revert r252858: "[WebAssembly] Switch to MC for instruction printing."Hans Wennborg2015-11-121-2/+6
| | | | | | | | It broke the CMake build: "Cannot find source file: WebAssemblyRegNumbering.cpp" llvm-svn: 252897
* [WebAssembly] Switch to MC for instruction printing.Dan Gohman2015-11-121-6/+2
| | | | | | | | | | | | | | | | | | | | This encompasses several changes which are all interconnected: - Use the MC framework for printing almost all instructions. - AsmStrings are now live. - This introduces an indirection between LLVM vregs and WebAssembly registers, and a new pass, WebAssemblyRegNumbering, for computing a basic the mapping. This addresses some basic issues with argument registers and unused registers. - The way ARGUMENT instructions are handled no longer generates redundant get_local+set_local for every argument. This also changes the assembly syntax somewhat; most notably, MC's printing use sigils on label names, so those are no longer present, and push/pop now have a sigil to keep them unambiguous. The usage of set_local/get_local/$push/$pop will continue to evolve significantly. This patch is just one step of a larger change. llvm-svn: 252858
* [WebAssembly] Add more explicit pushes to the tests.Dan Gohman2015-11-061-2/+2
| | | | llvm-svn: 252344
* WebAssembly: update syntaxJF Bastien2015-10-161-6/+8
| | | | | | | | | | | | | | | | | | | | | | | | Summary: Follow the same syntax as for the spec repo. Both have evolved slightly independently and need to converge again. This, along with wasmate changes, allows me to do the following: echo "int add(int a, int b) { return a + b; }" > add.c ./out/bin/clang -O2 -S --target=wasm32-unknown-unknown add.c -o add.wack ./experimental/prototype-wasmate/wasmate.py add.wack > add.wast ./sexpr-wasm-prototype/out/sexpr-wasm add.wast -o add.wasm ./sexpr-wasm-prototype/third_party/v8-native-prototype/v8/v8/out/Release/d8 -e "print(WASM.instantiateModule(readbuffer('add.wasm'), {print:print}).add(42, 1337));" As you'd expect, the d8 shell prints out the right value. Reviewers: sunfish Subscribers: jfb, llvm-commits, dschuff Differential Revision: http://reviews.llvm.org/D13712 llvm-svn: 250480
* [WebAssembly] Switch to a more traditional assembly syntaxDan Gohman2015-10-061-8/+14
| | | | | | | | | | | This new syntax is built around putting each instruction on its own line in a "mnemonic op, op, op" like syntax. It also uses conventional data section directives like ".byte" and so on rather than requiring everything to be in hierarchical S-expression format. This is a more natural syntax for a ".s" file format from the perspective of LLVM MC and related tools, while remaining easy to translate into other forms as needed. llvm-svn: 249364
* [WebAssembly] Rename setlocal to set_local to match the spec.Dan Gohman2015-10-031-2/+2
| | | | llvm-svn: 249218
* WebAssembly: emit `(func (param t) (result t))` s-expressionsJF Bastien2015-08-251-2/+4
| | | | | | | | | | | | Summary: Match spec format: https://github.com/WebAssembly/spec/blob/master/ml-proto/test/fac.wasm Reviewers: sunfish Subscribers: llvm-commits, jfb Differential Revision: http://reviews.llvm.org/D12307 llvm-svn: 245986
* [WebAssembly] Use the default alignment for SIMD types.Dan Gohman2015-08-191-1/+1
| | | | | | | | | Previously WebAssembly's datalayout string had -v128:8:128. This had been an attempt to declare a certain level of support for unaligned SIMD accesses. However, clang makes its own determinations for SIMD alignment that are independent of the datalayout string, so this wasn't actually meaningful. llvm-svn: 245494
* WebAssembly: handle more than int32 argument/returnJF Bastien2015-08-011-2/+2
| | | | | | | | | | | | Summary: Also test 64-bit integers, except shifts for now which are broken because isel dislikes the 32-bit truncate that precedes them. Reviewers: sunfish Subscribers: llvm-commits, jfb Differential Revision: http://reviews.llvm.org/D11699 llvm-svn: 243822
* WebAssembly: handle unused function arguments.JF Bastien2015-07-311-0/+20
Subscribers: llvm-commits, sunfish, jfb Differential Revision: http://reviews.llvm.org/D11684 llvm-svn: 243770
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