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* [WebAssembly] Allow multivalue signatures in object filesThomas Lively2019-10-181-0/+17
| | | | | | | | | | | | | | | | | Summary: Also changes the wasm YAML format to reflect the possibility of having multiple return types and to put the returns after the params for consistency with the binary encoding. Reviewers: aheejin, sbc100 Subscribers: dschuff, jgravelle-google, hiraditya, sunfish, arphaman, rupprecht, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69156 llvm-svn: 375283
* [WebAssembly] Allow multivalue types in block signature operandsThomas Lively2019-10-151-5/+19
| | | | | | | | | | | | | | | | | | | | | | | | | Summary: Renames `ExprType` to the more apt `BlockType` and adds a variant for multivalue blocks. Currently non-void blocks are only generated at the end of functions where the block return type needs to agree with the function return type, and that remains true for multivalue blocks. That invariant means that the actual signature does not need to be stored in the block signature `MachineOperand` because it can be inferred by `WebAssemblyMCInstLower` from the return type of the parent function. `WebAssemblyMCInstLower` continues to lower block signature operands to immediates when possible but lowers multivalue signatures to function type symbols. The AsmParser and Disassembler are updated to handle multivalue block types as well. Reviewers: aheejin, dschuff, aardappel Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68889 llvm-svn: 374933
* [WebAssembly] Make returns variadicThomas Lively2019-10-091-6/+8
| | | | | | | | | | | | | | | | | | Summary: This is necessary and sufficient to get simple cases of multiple return working with multivalue enabled. More complex cases will require block and loop signatures to be generalized to potentially be type indices as well. Reviewers: aheejin, dschuff Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68684 llvm-svn: 374235
* [WebAssembly] Add multivalue and tail-call target featuresThomas Lively2019-05-231-0/+28
Summary: These features will both be implemented soon, so I thought I would save time by adding the boilerplate for both of them at the same time. Reviewers: aheejin Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, cfe-commits, llvm-commits Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D62047 llvm-svn: 361516
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