1 files changed, 0 insertions, 68 deletions
diff --git a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp b/contrib/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
deleted file mode 100644
index e9d88d4818a5..000000000000
--- a/contrib/llvm/lib/Target/WebAssembly/WebAssemblyUtilities.cpp
+++ /dev/null
@@ -1,68 +0,0 @@
-//===-- WebAssemblyUtilities.cpp - WebAssembly Utility Functions ----------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// This file implements several utility functions for WebAssembly.
-///
-//===----------------------------------------------------------------------===//
-
-#include "WebAssemblyUtilities.h"
-#include "WebAssemblyMachineFunctionInfo.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineLoopInfo.h"
-using namespace llvm;
-
-const char *const WebAssembly::ClangCallTerminateFn = "__clang_call_terminate";
-const char *const WebAssembly::CxaBeginCatchFn = "__cxa_begin_catch";
-const char *const WebAssembly::CxaRethrowFn = "__cxa_rethrow";
-const char *const WebAssembly::StdTerminateFn = "_ZSt9terminatev";
-const char *const WebAssembly::PersonalityWrapperFn =
-    "_Unwind_Wasm_CallPersonality";
-
-/// Test whether MI is a child of some other node in an expression tree.
-bool WebAssembly::isChild(const MachineInstr &MI,
-                          const WebAssemblyFunctionInfo &MFI) {
-  if (MI.getNumOperands() == 0)
-    return false;
-  const MachineOperand &MO = MI.getOperand(0);
-  if (!MO.isReg() || MO.isImplicit() || !MO.isDef())
-    return false;
-  unsigned Reg = MO.getReg();
-  return TargetRegisterInfo::isVirtualRegister(Reg) &&
-         MFI.isVRegStackified(Reg);
-}
-
-bool WebAssembly::mayThrow(const MachineInstr &MI) {
-  switch (MI.getOpcode()) {
-  case WebAssembly::THROW:
-  case WebAssembly::THROW_S:
-  case WebAssembly::RETHROW:
-  case WebAssembly::RETHROW_S:
-    return true;
-  }
-  if (isCallIndirect(MI.getOpcode()))
-    return true;
-  if (!MI.isCall())
-    return false;
-
-  const MachineOperand &MO = MI.getOperand(getCalleeOpNo(MI.getOpcode()));
-  assert(MO.isGlobal());
-  const auto *F = dyn_cast<Function>(MO.getGlobal());
-  if (!F)
-    return true;
-  if (F->doesNotThrow())
-    return false;
-  // These functions never throw
-  if (F->getName() == CxaBeginCatchFn || F->getName() == PersonalityWrapperFn ||
-      F->getName() == ClangCallTerminateFn || F->getName() == StdTerminateFn)
-    return false;
-
-  // TODO Can we exclude call instructions that are marked as 'nounwind' in the
-  // original LLVm IR? (Even when the callee may throw)
-  return true;
-}