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e3e43d9d57
I did this a long time ago with a janky python script, but now clang-format has built-in support for this. I fed clang-format every line with a #include and let it re-sort things according to the precise LLVM rules for include ordering baked into clang-format these days. I've reverted a number of files where the results of sorting includes isn't healthy. Either places where we have legacy code relying on particular include ordering (where possible, I'll fix these separately) or where we have particular formatting around #include lines that I didn't want to disturb in this patch. This patch is *entirely* mechanical. If you get merge conflicts or anything, just ignore the changes in this patch and run clang-format over your #include lines in the files. Sorry for any noise here, but it is important to keep these things stable. I was seeing an increasing number of patches with irrelevant re-ordering of #include lines because clang-format was used. This patch at least isolates that churn, makes it easy to skip when resolving conflicts, and gets us to a clean baseline (again). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304787 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
2.8 KiB
C++
72 lines
2.8 KiB
C++
//===-- FunctionAttrs.h - Compute function attrs --------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// Provides passes for computing function attributes based on interprocedural
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/// analyses.
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_IPO_FUNCTIONATTRS_H
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#define LLVM_TRANSFORMS_IPO_FUNCTIONATTRS_H
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#include "llvm/Analysis/CGSCCPassManager.h"
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#include "llvm/Analysis/LazyCallGraph.h"
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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class AAResults;
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/// The three kinds of memory access relevant to 'readonly' and
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/// 'readnone' attributes.
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enum MemoryAccessKind {
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MAK_ReadNone = 0,
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MAK_ReadOnly = 1,
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MAK_MayWrite = 2
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};
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/// Returns the memory access properties of this copy of the function.
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MemoryAccessKind computeFunctionBodyMemoryAccess(Function &F, AAResults &AAR);
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/// Computes function attributes in post-order over the call graph.
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///
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/// By operating in post-order, this pass computes precise attributes for
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/// called functions prior to processsing their callers. This "bottom-up"
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/// approach allows powerful interprocedural inference of function attributes
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/// like memory access patterns, etc. It can discover functions that do not
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/// access memory, or only read memory, and give them the readnone/readonly
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/// attribute. It also discovers function arguments that are not captured by
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/// the function and marks them with the nocapture attribute.
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struct PostOrderFunctionAttrsPass : PassInfoMixin<PostOrderFunctionAttrsPass> {
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PreservedAnalyses run(LazyCallGraph::SCC &C, CGSCCAnalysisManager &AM,
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LazyCallGraph &CG, CGSCCUpdateResult &UR);
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};
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/// Create a legacy pass manager instance of a pass to compute function attrs
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/// in post-order.
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Pass *createPostOrderFunctionAttrsLegacyPass();
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/// A pass to do RPO deduction and propagation of function attributes.
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///
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/// This pass provides a general RPO or "top down" propagation of
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/// function attributes. For a few (rare) cases, we can deduce significantly
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/// more about function attributes by working in RPO, so this pass
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/// provides the complement to the post-order pass above where the majority of
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/// deduction is performed.
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// FIXME: Currently there is no RPO CGSCC pass structure to slide into and so
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// this is a boring module pass, but eventually it should be an RPO CGSCC pass
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// when such infrastructure is available.
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class ReversePostOrderFunctionAttrsPass
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: public PassInfoMixin<ReversePostOrderFunctionAttrsPass> {
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public:
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PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
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};
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}
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#endif // LLVM_TRANSFORMS_IPO_FUNCTIONATTRS_H
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