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bce8a58b24
Back when we had CallSite, we implemented the current Statepoint/ImmutableStatepoint structure in analogous manner. Now that CallSite has been removed, the structure used for statepoints looks decidely out of place. gc.statepoint is one of the small handful of intrinsics which are invokable. Because of this, it can't subclass IntrinsicInst as is idiomatic. This change simply introduces the GCStatepointInst class, restructures the existing Statepoint/ImmutableStatepoint types to wrap it. I will be landing a series of changes to sink functionality into GCStatepointInst and updating callers to be more idiomatic.
75 lines
2.2 KiB
C++
75 lines
2.2 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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bool llvm::isStatepoint(const CallBase *Call) {
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return isa<GCStatepointInst>(Call);
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}
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bool llvm::isStatepoint(const Value *V) {
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return isa<GCStatepointInst>(V);
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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(const CallBase *Call) {
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return isa<GCRelocateInst>(Call);
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}
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bool llvm::isGCRelocate(const Value *V) {
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if (auto *Call = dyn_cast<CallBase>(V))
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return isGCRelocate(Call);
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return false;
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}
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bool llvm::isGCResult(const CallBase *Call) { return isa<GCResultInst>(Call); }
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bool llvm::isGCResult(const Value *V) {
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if (auto *Call = dyn_cast<CallBase>(V))
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return isGCResult(Call);
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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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