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[wasm] Compare wasm signatures against SMI constants for more efficient check.

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R=ahaas@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2429833002
Cr-Commit-Position: refs/heads/master@{#40403}
This commit is contained in:
titzer 2016-10-18 06:42:35 -07:00 committed by Commit bot
parent b6c152e967
commit 7bbfe5c81a
1 changed files with 2 additions and 3 deletions
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5
src/compiler/wasm-compiler.cc
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@ -2177,9 +2177,8 @@ Node* WasmGraphBuilder::CallIndirect(uint32_t index, Node** args, Node*** rets,
*effect_, *control_);
int32_t key = module_->module->function_tables[0].map.Find(sig);
DCHECK_GE(key, 0);
Node* sig_match =
graph()->NewNode(machine->Word32Equal(),
BuildChangeSmiToInt32(load_sig), Int32Constant(key));
Node* sig_match = graph()->NewNode(machine->WordEqual(), load_sig,
jsgraph()->SmiConstant(key));
trap_->AddTrapIfFalse(wasm::kTrapFuncSigMismatch, sig_match, position);
}