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Diffstat (limited to 'src/passes/LowerCase.cpp')
-rw-r--r-- | src/passes/LowerCase.cpp | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/src/passes/LowerCase.cpp b/src/passes/LowerCase.cpp deleted file mode 100644 index f890de411..000000000 --- a/src/passes/LowerCase.cpp +++ /dev/null @@ -1,103 +0,0 @@ -/* - * Copyright 2016 WebAssembly Community Group participants - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -// -// Lowers switch cases out into blocks, -// -/* - (tableswitch $switch$0 - (i32.sub - (get_local $x) - (i32.const 1) - ) - (table (case $switch-case$1) (case $switch-case$2)) (case $switch-default$3) - (case $switch-case$1 - (return - (i32.const 1) - ) - ) - (case $switch-case$2 - (return - (i32.const 2) - ) - ) - (case $switch-default$3 - (nop) - ) - ) - - into - - (block $forswitch$switch$0 - (block $switch-case$3 - (block $switch-case$2 - (block $switch-case$1 - (tableswitch $switch$0 - (i32.sub - (get_local $x) - (i32.const 1) - ) - (table (br $switch-case$1) (br $switch-case$2)) (br $switch-default$3) - ) - ) - (return - (i32.const 1) - ) - ) - (return - (i32.const 2) - ) - ) - (nop) - ) -*/ - - -#include <memory> - -#include <wasm.h> -#include <pass.h> - -namespace wasm { - -struct LowerCase : public WalkerPass<WasmWalker<LowerCase, void>> { - MixedArena* allocator; - - void prepare(PassRunner* runner, Module *module) override { - allocator = runner->allocator; - } - - void visitSwitch(Switch *curr) { - if (curr->cases.size() == 0) return; - auto top = allocator->alloc<Block>(); - top->list.push_back(curr); - for (auto& c : curr->cases) { - top->name = c.name; - auto next = allocator->alloc<Block>(); - next->list.push_back(top); - next->list.push_back(c.body); - top = next; - } - curr->cases.clear(); - top->name = curr->name; - curr->name = Name(); - replaceCurrent(top); - } -}; - -static RegisterPass<LowerCase> registerPass("lower-case", "lowers cases into blocks"); - -} // namespace wasm |