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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
//===-- IR/Statepoint.cpp -- gc.statepoint utilities --- -----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains some utility functions to help recognize gc.statepoint
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// intrinsics.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Statepoint.h"
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#include "llvm/IR/Function.h"
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using namespace llvm;
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static const Function *getCalledFunction(ImmutableCallSite CS) {
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if (!CS.getInstruction())
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return nullptr;
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return CS.getCalledFunction();
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}
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bool llvm::isStatepoint(ImmutableCallSite CS) {
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if (auto *F = getCalledFunction(CS))
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return F->getIntrinsicID() == Intrinsic::experimental_gc_statepoint;
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return false;
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}
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bool llvm::isStatepoint(const Value *V) {
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if (auto CS = ImmutableCallSite(V))
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return isStatepoint(CS);
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return false;
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}
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bool llvm::isStatepoint(const Value &V) {
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return isStatepoint(&V);
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}
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bool llvm::isGCRelocate(ImmutableCallSite CS) {
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return CS.getInstruction() && isa<GCRelocateInst>(CS.getInstruction());
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}
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bool llvm::isGCRelocate(const Value *V) {
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if (auto CS = ImmutableCallSite(V))
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return isGCRelocate(CS);
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return false;
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}
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bool llvm::isGCResult(ImmutableCallSite CS) {
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return CS.getInstruction() && isa<GCResultInst>(CS.getInstruction());
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}
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bool llvm::isGCResult(const Value *V) {
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if (auto CS = ImmutableCallSite(V))
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return isGCResult(CS);
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return false;
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}
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bool llvm::isStatepointDirectiveAttr(Attribute Attr) {
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return Attr.hasAttribute("statepoint-id") ||
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Attr.hasAttribute("statepoint-num-patch-bytes");
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}
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StatepointDirectives
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llvm::parseStatepointDirectivesFromAttrs(AttributeList AS) {
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StatepointDirectives Result;
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Attribute AttrID =
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AS.getAttribute(AttributeList::FunctionIndex, "statepoint-id");
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uint64_t StatepointID;
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if (AttrID.isStringAttribute())
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if (!AttrID.getValueAsString().getAsInteger(10, StatepointID))
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Result.StatepointID = StatepointID;
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uint32_t NumPatchBytes;
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Attribute AttrNumPatchBytes = AS.getAttribute(AttributeList::FunctionIndex,
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"statepoint-num-patch-bytes");
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if (AttrNumPatchBytes.isStringAttribute())
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if (!AttrNumPatchBytes.getValueAsString().getAsInteger(10, NumPatchBytes))
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Result.NumPatchBytes = NumPatchBytes;
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return Result;
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}
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