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4cad16d76c
pass manager passes' `run` methods. This removes a bunch of SFINAE goop from the pass manager and just requires pass authors to accept `AnalysisManager<IRUnitT> &` as a dead argument. This is a small price to pay for the simplicity of the system as a whole, despite the noise that changing it causes at this stage. This will also helpfull allow us to make the signature of the run methods much more flexible for different kinds af passes to support things like intelligently updating the pass's progression over IR units. While this touches many, many, files, the changes are really boring. Mostly made with the help of my trusty perl one liners. Thanks to Sean and Hal for bouncing ideas for this with me in IRC. llvm-svn: 272978
123 lines
4.3 KiB
C++
123 lines
4.3 KiB
C++
//===- ForceFunctionAttrs.cpp - Force function attrs for debugging --------===//
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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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#include "llvm/Transforms/IPO/ForceFunctionAttrs.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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#define DEBUG_TYPE "forceattrs"
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static cl::list<std::string>
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ForceAttributes("force-attribute", cl::Hidden,
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cl::desc("Add an attribute to a function. This should be a "
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"pair of 'function-name:attribute-name', for "
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"example -force-attribute=foo:noinline. This "
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"option can be specified multiple times."));
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static Attribute::AttrKind parseAttrKind(StringRef Kind) {
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return StringSwitch<Attribute::AttrKind>(Kind)
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.Case("alwaysinline", Attribute::AlwaysInline)
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.Case("builtin", Attribute::Builtin)
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.Case("cold", Attribute::Cold)
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.Case("convergent", Attribute::Convergent)
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.Case("inlinehint", Attribute::InlineHint)
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.Case("jumptable", Attribute::JumpTable)
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.Case("minsize", Attribute::MinSize)
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.Case("naked", Attribute::Naked)
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.Case("nobuiltin", Attribute::NoBuiltin)
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.Case("noduplicate", Attribute::NoDuplicate)
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.Case("noimplicitfloat", Attribute::NoImplicitFloat)
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.Case("noinline", Attribute::NoInline)
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.Case("nonlazybind", Attribute::NonLazyBind)
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.Case("noredzone", Attribute::NoRedZone)
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.Case("noreturn", Attribute::NoReturn)
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.Case("norecurse", Attribute::NoRecurse)
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.Case("nounwind", Attribute::NoUnwind)
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.Case("optnone", Attribute::OptimizeNone)
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.Case("optsize", Attribute::OptimizeForSize)
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.Case("readnone", Attribute::ReadNone)
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.Case("readonly", Attribute::ReadOnly)
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.Case("argmemonly", Attribute::ArgMemOnly)
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.Case("returns_twice", Attribute::ReturnsTwice)
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.Case("safestack", Attribute::SafeStack)
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.Case("sanitize_address", Attribute::SanitizeAddress)
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.Case("sanitize_memory", Attribute::SanitizeMemory)
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.Case("sanitize_thread", Attribute::SanitizeThread)
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.Case("ssp", Attribute::StackProtect)
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.Case("sspreq", Attribute::StackProtectReq)
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.Case("sspstrong", Attribute::StackProtectStrong)
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.Case("uwtable", Attribute::UWTable)
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.Default(Attribute::None);
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}
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/// If F has any forced attributes given on the command line, add them.
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static void addForcedAttributes(Function &F) {
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for (auto &S : ForceAttributes) {
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auto KV = StringRef(S).split(':');
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if (KV.first != F.getName())
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continue;
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auto Kind = parseAttrKind(KV.second);
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if (Kind == Attribute::None) {
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DEBUG(dbgs() << "ForcedAttribute: " << KV.second
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<< " unknown or not handled!\n");
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continue;
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}
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if (F.hasFnAttribute(Kind))
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continue;
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F.addFnAttr(Kind);
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}
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}
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PreservedAnalyses ForceFunctionAttrsPass::run(Module &M,
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ModuleAnalysisManager &) {
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if (ForceAttributes.empty())
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return PreservedAnalyses::all();
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for (Function &F : M.functions())
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addForcedAttributes(F);
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// Just conservatively invalidate analyses, this isn't likely to be important.
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return PreservedAnalyses::none();
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}
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namespace {
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struct ForceFunctionAttrsLegacyPass : public ModulePass {
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static char ID; // Pass identification, replacement for typeid
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ForceFunctionAttrsLegacyPass() : ModulePass(ID) {
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initializeForceFunctionAttrsLegacyPassPass(
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*PassRegistry::getPassRegistry());
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}
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bool runOnModule(Module &M) override {
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if (ForceAttributes.empty())
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return false;
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for (Function &F : M.functions())
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addForcedAttributes(F);
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// Conservatively assume we changed something.
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return true;
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}
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};
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}
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char ForceFunctionAttrsLegacyPass::ID = 0;
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INITIALIZE_PASS(ForceFunctionAttrsLegacyPass, "forceattrs",
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"Force set function attributes", false, false)
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Pass *llvm::createForceFunctionAttrsLegacyPass() {
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return new ForceFunctionAttrsLegacyPass();
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}
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