1 files changed, 0 insertions, 81 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/WasmException.cpp b/llvm/lib/CodeGen/AsmPrinter/WasmException.cpp
deleted file mode 100644
index 46745d08c9f..00000000000
--- a/llvm/lib/CodeGen/AsmPrinter/WasmException.cpp
+++ /dev/null
@@ -1,81 +0,0 @@
-//===-- CodeGen/AsmPrinter/WasmException.cpp - Wasm Exception Impl --------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains support for writing WebAssembly exception info into asm
-// files.
-//
-//===----------------------------------------------------------------------===//
-
-#include "WasmException.h"
-#include "llvm/MC/MCStreamer.h"
-using namespace llvm;
-
-void WasmException::markFunctionEnd() {
-  // Get rid of any dead landing pads.
-  if (!Asm->MF->getLandingPads().empty()) {
-    auto *NonConstMF = const_cast<MachineFunction *>(Asm->MF);
-    // Wasm does not set BeginLabel and EndLabel information for landing pads,
-    // so we should set the second argument false.
-    NonConstMF->tidyLandingPads(nullptr, /* TidyIfNoBeginLabels */ false);
-  }
-}
-
-void WasmException::endFunction(const MachineFunction *MF) {
-  bool ShouldEmitExceptionTable = false;
-  for (const LandingPadInfo &Info : MF->getLandingPads()) {
-    if (MF->hasWasmLandingPadIndex(Info.LandingPadBlock)) {
-      ShouldEmitExceptionTable = true;
-      break;
-    }
-  }
-  if (!ShouldEmitExceptionTable)
-    return;
-  MCSymbol *LSDALabel = emitExceptionTable();
-  assert(LSDALabel && ".GCC_exception_table has not been emitted!");
-
-  // Wasm requires every data section symbol to have a .size set. So we emit an
-  // end marker and set the size as the difference between the start end the end
-  // marker.
-  MCSymbol *LSDAEndLabel = Asm->createTempSymbol("GCC_except_table_end");
-  Asm->OutStreamer->EmitLabel(LSDAEndLabel);
-  MCContext &OutContext = Asm->OutStreamer->getContext();
-  const MCExpr *SizeExp = MCBinaryExpr::createSub(
-      MCSymbolRefExpr::create(LSDAEndLabel, OutContext),
-      MCSymbolRefExpr::create(LSDALabel, OutContext), OutContext);
-  Asm->OutStreamer->emitELFSize(LSDALabel, SizeExp);
-}
-
-// Compute the call-site table for wasm EH. Even though we use the same function
-// name to share the common routines, a call site entry in the table corresponds
-// to not a call site for possibly-throwing functions but a landing pad. In wasm
-// EH the VM is responsible for stack unwinding. After an exception occurs and
-// the stack is unwound, the control flow is transferred to wasm 'catch'
-// instruction by the VM, after which the personality function is called from
-// the compiler-generated code. Refer to WasmEHPrepare pass for more
-// information.
-void WasmException::computeCallSiteTable(
-    SmallVectorImpl<CallSiteEntry> &CallSites,
-    const SmallVectorImpl<const LandingPadInfo *> &LandingPads,
-    const SmallVectorImpl<unsigned> &FirstActions) {
-  MachineFunction &MF = *Asm->MF;
-  for (unsigned I = 0, N = LandingPads.size(); I < N; ++I) {
-    const LandingPadInfo *Info = LandingPads[I];
-    MachineBasicBlock *LPad = Info->LandingPadBlock;
-    // We don't emit LSDA for single catch (...).
-    if (!MF.hasWasmLandingPadIndex(LPad))
-      continue;
-    // Wasm EH must maintain the EH pads in the order assigned to them by the
-    // WasmEHPrepare pass.
-    unsigned LPadIndex = MF.getWasmLandingPadIndex(LPad);
-    CallSiteEntry Site = {nullptr, nullptr, Info, FirstActions[I]};
-    if (CallSites.size() < LPadIndex + 1)
-      CallSites.resize(LPadIndex + 1);
-    CallSites[LPadIndex] = Site;
-  }
-}