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* [WebAssembly] Re-enable this test, now that interactions with the coalescer ↵Dan Gohman2016-01-191-3/+8
| | | | | | are resolved. llvm-svn: 258138
* [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] Implement eliminateCallFramePseudoDerek Schuff2015-12-161-6/+7
| | | | | | | | | | | | | | | | | | Summary: Implement eliminateCallFramePsuedo to handle ADJCALLSTACKUP/DOWN pseudo-instructions. Add a test calling a vararg function which causes non-0 adjustments. This revealed an issue with RegisterCoalescer wherein it eliminates a COPY from SP32 to a vreg but failes to update the live ranges of EXPR_STACK, causing a machineinstr verifier failure (so this test is commented out). Also add a dynamic alloca test, which causes a callseq_end dag node with a 0 (instead of undef) second argument to be generated. We currently fail to select that, so adjust the ADJCALLSTACKUP tablegen code to handle it. Differential Revision: http://reviews.llvm.org/D15587 llvm-svn: 255844
* [WebAssembly] Reintroduce ARGUMENT moving logicDan Gohman2015-12-091-1/+1
| | | | | | | | | | | | | | | | | | | Reinteroduce the code for moving ARGUMENTS back to the top of the basic block. While the ARGUMENTS physical register prevents sinking and scheduling from moving them, it does not appear to be sufficient to prevent SelectionDAG from moving them down in the initial schedule. This patch introduces a patch that moves them back to the top immediately after SelectionDAG runs. This is still hopefully a temporary solution. http://reviews.llvm.org/D14750 is one alternative, though the review has not been favorable, and proposed alternatives are longer-term and have other downsides. This fixes the main outstanding -verify-machineinstrs failures, so it adds -verify-machineinstrs to several tests. Differential Revision: http://reviews.llvm.org/D15377 llvm-svn: 255125
* [WebAssembly] Support constant offsets on loads and storesDerek Schuff2015-12-051-8/+8
| | | | | | | | | This is just prototype for load/store for i32 types. I'll add them to the rest of the types if we like this direction. Differential Revision: http://reviews.llvm.org/D15197 llvm-svn: 254807
* [WebAssembly] Initial varargs support.Dan Gohman2015-12-041-0/+122
Full varargs support will depend on prologue/epilogue support, but this patch gets us started with most of the basic infrastructure. Differential Revision: http://reviews.llvm.org/D15231 llvm-svn: 254799
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