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41c88f864a
The body of a function has to be re-analyzed for every call site of the function, which is very expensive and if the body is not changed would produce the same result. This takes about ~10% from swift-syntax overall build time in release configuration.
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
//===--- IsSelfRecursiveAnalysis.cpp --------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2025 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "swift/SILOptimizer/Analysis/IsSelfRecursiveAnalysis.h"
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#include "swift/SIL/ApplySite.h"
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#include "swift/SIL/SILBasicBlock.h"
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#include "swift/SIL/SILFunction.h"
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#include "swift/SIL/SILInstruction.h"
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using namespace swift;
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// Force the compiler to generate the destructor in this C++ file.
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// Otherwise it can happen that it is generated in a SwiftCompilerSources module
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// and that results in unresolved-symbols linker errors.
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IsSelfRecursive::~IsSelfRecursive() = default;
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void IsSelfRecursive::compute() {
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isSelfRecursive = false;
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for (auto &BB : *getFunction()) {
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for (auto &I : BB) {
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if (auto Apply = FullApplySite::isa(&I)) {
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if (Apply.getReferencedFunctionOrNull() == f) {
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isSelfRecursive = true;
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return;
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}
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}
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}
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}
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}
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//===----------------------------------------------------------------------===//
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// Main Entry Point
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//===----------------------------------------------------------------------===//
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SILAnalysis *swift::createIsSelfRecursiveAnalysis(SILModule *) {
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return new IsSelfRecursiveAnalysis();
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}
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