Initial check in
Bug: 137197907
diff --git a/src/llvm-project/llvm/lib/IR/Statepoint.cpp b/src/llvm-project/llvm/lib/IR/Statepoint.cpp
new file mode 100644
index 0000000..18efee2
--- /dev/null
+++ b/src/llvm-project/llvm/lib/IR/Statepoint.cpp
@@ -0,0 +1,87 @@
+//===-- IR/Statepoint.cpp -- gc.statepoint utilities --- -----------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains some utility functions to help recognize gc.statepoint
+// intrinsics.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/IR/Statepoint.h"
+
+#include "llvm/IR/Function.h"
+
+using namespace llvm;
+
+static const Function *getCalledFunction(ImmutableCallSite CS) {
+ if (!CS.getInstruction())
+ return nullptr;
+ return CS.getCalledFunction();
+}
+
+bool llvm::isStatepoint(ImmutableCallSite CS) {
+ if (auto *F = getCalledFunction(CS))
+ return F->getIntrinsicID() == Intrinsic::experimental_gc_statepoint;
+ return false;
+}
+
+bool llvm::isStatepoint(const Value *V) {
+ if (auto CS = ImmutableCallSite(V))
+ return isStatepoint(CS);
+ return false;
+}
+
+bool llvm::isStatepoint(const Value &V) {
+ return isStatepoint(&V);
+}
+
+bool llvm::isGCRelocate(ImmutableCallSite CS) {
+ return CS.getInstruction() && isa<GCRelocateInst>(CS.getInstruction());
+}
+
+bool llvm::isGCRelocate(const Value *V) {
+ if (auto CS = ImmutableCallSite(V))
+ return isGCRelocate(CS);
+ return false;
+}
+
+bool llvm::isGCResult(ImmutableCallSite CS) {
+ return CS.getInstruction() && isa<GCResultInst>(CS.getInstruction());
+}
+
+bool llvm::isGCResult(const Value *V) {
+ if (auto CS = ImmutableCallSite(V))
+ return isGCResult(CS);
+ return false;
+}
+
+bool llvm::isStatepointDirectiveAttr(Attribute Attr) {
+ return Attr.hasAttribute("statepoint-id") ||
+ Attr.hasAttribute("statepoint-num-patch-bytes");
+}
+
+StatepointDirectives
+llvm::parseStatepointDirectivesFromAttrs(AttributeList AS) {
+ StatepointDirectives Result;
+
+ Attribute AttrID =
+ AS.getAttribute(AttributeList::FunctionIndex, "statepoint-id");
+ uint64_t StatepointID;
+ if (AttrID.isStringAttribute())
+ if (!AttrID.getValueAsString().getAsInteger(10, StatepointID))
+ Result.StatepointID = StatepointID;
+
+ uint32_t NumPatchBytes;
+ Attribute AttrNumPatchBytes = AS.getAttribute(AttributeList::FunctionIndex,
+ "statepoint-num-patch-bytes");
+ if (AttrNumPatchBytes.isStringAttribute())
+ if (!AttrNumPatchBytes.getValueAsString().getAsInteger(10, NumPatchBytes))
+ Result.NumPatchBytes = NumPatchBytes;
+
+ return Result;
+}
