From 46f838f3707183682fe0cd78601e85e089c35aa3 Mon Sep 17 00:00:00 2001
From: Roman Tereshin <rtereshin@apple.com>
Date: Mon, 30 Apr 2018 18:58:57 +0000
Subject: [MIR] Reset unique MBB numbering in MachineFunction::reset()

No need to waste space nor number MBBs differently if MF gets recreated.

Reviewers: qcolombet, stoklund, t.p.northover, bogner, javed.absar

Reviewed By: qcolombet

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D46078

llvm-svn: 331213
---
 llvm/lib/CodeGen/MachineFunction.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'llvm/lib/CodeGen/MachineFunction.cpp')

diff --git a/llvm/lib/CodeGen/MachineFunction.cpp b/llvm/lib/CodeGen/MachineFunction.cpp
index fa38a97862f..e47aeb64910 100644
--- a/llvm/lib/CodeGen/MachineFunction.cpp
+++ b/llvm/lib/CodeGen/MachineFunction.cpp
@@ -196,6 +196,7 @@ void MachineFunction::clear() {
   // Do call MachineBasicBlock destructors, it contains std::vectors.
   for (iterator I = begin(), E = end(); I != E; I = BasicBlocks.erase(I))
     I->Insts.clearAndLeakNodesUnsafely();
+  MBBNumbering.clear();
 
   InstructionRecycler.clear(Allocator);
   OperandRecycler.clear(Allocator);
-- 
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