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authorDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
committerDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
commit0b57cec536236d46e3dba9bd041533462f33dbb7 (patch)
tree56229dbdbbf76d18580f72f789003db17246c8d9 /contrib/llvm/lib/CodeGen/FuncletLayout.cpp
parent718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff)
Notes
Diffstat (limited to 'contrib/llvm/lib/CodeGen/FuncletLayout.cpp')
-rw-r--r--contrib/llvm/lib/CodeGen/FuncletLayout.cpp61
1 files changed, 0 insertions, 61 deletions
diff --git a/contrib/llvm/lib/CodeGen/FuncletLayout.cpp b/contrib/llvm/lib/CodeGen/FuncletLayout.cpp
deleted file mode 100644
index 75f6d0b8f0bf..000000000000
--- a/contrib/llvm/lib/CodeGen/FuncletLayout.cpp
+++ /dev/null
@@ -1,61 +0,0 @@
-//===-- FuncletLayout.cpp - Contiguously lay out funclets -----------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements basic block placement transformations which result in
-// funclets being contiguous.
-//
-//===----------------------------------------------------------------------===//
-#include "llvm/CodeGen/Analysis.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/Passes.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "funclet-layout"
-
-namespace {
-class FuncletLayout : public MachineFunctionPass {
-public:
- static char ID; // Pass identification, replacement for typeid
- FuncletLayout() : MachineFunctionPass(ID) {
- initializeFuncletLayoutPass(*PassRegistry::getPassRegistry());
- }
-
- bool runOnMachineFunction(MachineFunction &F) override;
- MachineFunctionProperties getRequiredProperties() const override {
- return MachineFunctionProperties().set(
- MachineFunctionProperties::Property::NoVRegs);
- }
-};
-}
-
-char FuncletLayout::ID = 0;
-char &llvm::FuncletLayoutID = FuncletLayout::ID;
-INITIALIZE_PASS(FuncletLayout, DEBUG_TYPE,
- "Contiguously Lay Out Funclets", false, false)
-
-bool FuncletLayout::runOnMachineFunction(MachineFunction &F) {
- // Even though this gets information from getEHScopeMembership(), this pass is
- // only necessary for funclet-based EH personalities, in which these EH scopes
- // are outlined at the end.
- DenseMap<const MachineBasicBlock *, int> FuncletMembership =
- getEHScopeMembership(F);
- if (FuncletMembership.empty())
- return false;
-
- F.sort([&](MachineBasicBlock &X, MachineBasicBlock &Y) {
- auto FuncletX = FuncletMembership.find(&X);
- auto FuncletY = FuncletMembership.find(&Y);
- assert(FuncletX != FuncletMembership.end());
- assert(FuncletY != FuncletMembership.end());
- return FuncletX->second < FuncletY->second;
- });
-
- // Conservatively assume we changed something.
- return true;
-}