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[tools][wasm] wami: print size of locals declarations

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as part of --instruction-stats.

Change-Id: I4504514fa291a28bc04dec31d8a444b316e7d7b8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3823123
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82334}
This commit is contained in:
Jakob Kummerow 2022-08-10 12:17:20 +02:00 committed by V8 LUCI CQ
parent d72b9bda9b
commit 6cad3a0bcd
1 changed files with 20 additions and 7 deletions
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27
tools/wasm/module-inspector.cc
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@ -101,6 +101,11 @@ class InstructionStatistics {
void RecordCodeSize(size_t chunk) { total_code_size_ += chunk; }
void RecordLocals(uint32_t count, uint32_t size) {
locals_count_ += count;
locals_size_ += size;
}
void WriteTo(std::ostream& out) {
// Sort by number of occurrences.
std::vector<Entry> sorted;
@ -134,19 +139,24 @@ class InstructionStatistics {
out << std::setw(8) << "% of code\n";
// Print instruction counts.
for (const Entry& e : sorted) {
out << std::setw(longest_mnemo) << std::left
<< WasmOpcodes::OpcodeName(e.opcode);
out << std::setw(count_digits) << std::right << e.count;
auto PrintLine = [&](const char* name, uint32_t count,
uint32_t total_size) {
out << std::setw(longest_mnemo) << std::left << name;
out << std::setw(count_digits) << std::right << count;
out << std::setw(kSpacing) << " ";
out << std::setw(8) << e.total_size;
out << std::setw(8) << total_size;
out << std::setw(kSpacing) << " ";
out << std::fixed << std::setprecision(2) << std::setw(8)
<< static_cast<double>(e.total_size) / e.count;
<< static_cast<double>(total_size) / count;
out << std::setw(kSpacing) << " ";
out << std::fixed << std::setprecision(1) << std::setw(8)
<< 100.0 * e.total_size / total_code_size_ << "%\n";
<< 100.0 * total_size / this->total_code_size_ << "%\n";
};
for (const Entry& e : sorted) {
PrintLine(WasmOpcodes::OpcodeName(e.opcode), e.count, e.total_size);
}
out << "\n";
PrintLine("locals", locals_count_, locals_size_);
// Print most common immediate values.
for (const auto& imm : immediates) {
@ -193,6 +203,8 @@ class InstructionStatistics {
std::unordered_map<WasmOpcode, Entry> entries;
std::map<WasmOpcode, OpcodeImmediates> immediates;
size_t total_code_size_ = 0;
uint32_t locals_count_ = 0;
uint32_t locals_size_ = 0;
};
// A variant of FunctionBodyDisassembler that can produce "annotated hex dump"
@ -325,6 +337,7 @@ class ExtendedFunctionDis : public FunctionBodyDisassembler {
uint32_t locals_length;
DecodeLocals(pc_, &locals_length);
if (failed()) return;
stats.RecordLocals(num_locals(), locals_length);
consume_bytes(locals_length);
while (pc_ < end_) {
WasmOpcode opcode = GetOpcode();