1 //===-- IR/Statepoint.cpp -- gc.statepoint utilities ---  -----------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file contains some utility functions to help recognize gc.statepoint
10 // intrinsics.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/IR/Statepoint.h"
15 
16 using namespace llvm;
17 
18 bool llvm::isStatepointDirectiveAttr(Attribute Attr) {
19   return Attr.hasAttribute("statepoint-id") ||
20          Attr.hasAttribute("statepoint-num-patch-bytes");
21 }
22 
23 StatepointDirectives
24 llvm::parseStatepointDirectivesFromAttrs(AttributeList AS) {
25   StatepointDirectives Result;
26 
27   Attribute AttrID = AS.getFnAttr("statepoint-id");
28   uint64_t StatepointID;
29   if (AttrID.isStringAttribute())
30     if (!AttrID.getValueAsString().getAsInteger(10, StatepointID))
31       Result.StatepointID = StatepointID;
32 
33   uint32_t NumPatchBytes;
34   Attribute AttrNumPatchBytes = AS.getFnAttr("statepoint-num-patch-bytes");
35   if (AttrNumPatchBytes.isStringAttribute())
36     if (!AttrNumPatchBytes.getValueAsString().getAsInteger(10, NumPatchBytes))
37       Result.NumPatchBytes = NumPatchBytes;
38 
39   return Result;
40 }
41