Update prebuilt Clang to r353983e.HEADq10.0

clang 9.0.5 (based on r353983e) from build 5696680.

Bug: http://b/135931688
Bug: http://b/136008926
Test: N/A
Change-Id: I922d17410047d2e2df4625615352c588ee71b203

1 files changed, 44 insertions, 0 deletions

diff --git a/clang-r353983e/include/llvm/Analysis/GuardUtils.h b/clang-r353983e/include/llvm/Analysis/GuardUtils.h
new file mode 100644
index 00000000..41e7b7c0
--- /dev/null
+++ b/clang-r353983e/include/llvm/Analysis/GuardUtils.h
@@ -0,0 +1,44 @@
+//===-- GuardUtils.h - Utils for work with guards ---------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// Utils that are used to perform analyzes related to guards and their
+// conditions.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_GUARDUTILS_H
+#define LLVM_ANALYSIS_GUARDUTILS_H
+
+namespace llvm {
+
+class BasicBlock;
+class User;
+class Value;
+
+/// Returns true iff \p U has semantics of a guard expressed in a form of call
+/// of llvm.experimental.guard intrinsic.
+bool isGuard(const User *U);
+
+/// Returns true iff \p U has semantics of a guard expressed in a form of a
+/// widenable conditional branch to deopt block.
+bool isGuardAsWidenableBranch(const User *U);
+
+/// If U is widenable branch looking like:
+///   %cond = ...
+///   %wc = call i1 @llvm.experimental.widenable.condition()
+///   %branch_cond = and i1 %cond, %wc
+///   br i1 %branch_cond, label %if_true_bb, label %if_false_bb ; <--- U
+/// The function returns true, and the values %cond and %wc and blocks
+/// %if_true_bb, if_false_bb are returned in
+/// the parameters (Condition, WidenableCondition, IfTrueBB and IfFalseFF)
+/// respectively. If \p U does not match this pattern, return false.
+bool parseWidenableBranch(const User *U, Value *&Condition,
+                          Value *&WidenableCondition, BasicBlock *&IfTrueBB,
+                          BasicBlock *&IfFalseBB);
+
+} // llvm
+
+#endif // LLVM_ANALYSIS_GUARDUTILS_H