From 992fbe3519c0a0b643b93ecbf9bd6297c9117714 Mon Sep 17 00:00:00 2001
From: "Carsey, Jaben" <jaben.carsey@intel.com>
Date: Fri, 20 Apr 2018 23:51:43 +0800
Subject: [PATCH] BaseTools: AutoGen - use dafultdict instead of dict

since we manually make each entry a set(), just use defaultdict(set)

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
---
 BaseTools/Source/Python/AutoGen/AutoGen.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/BaseTools/Source/Python/AutoGen/AutoGen.py b/BaseTools/Source/Python/AutoGen/AutoGen.py
index 20f1c2da1e..7b37dd2561 100644
--- a/BaseTools/Source/Python/AutoGen/AutoGen.py
+++ b/BaseTools/Source/Python/AutoGen/AutoGen.py
@@ -355,10 +355,9 @@ class WorkspaceAutoGen(AutoGen):
             # but the path (self.MetaFile.Path) is the real path
             for key in self.FdfProfile.InfDict:
                 if key == 'ArchTBD':
-                    MetaFile_cache = {}
+                    MetaFile_cache = defaultdict(set)
                     for Arch in self.ArchList:
                         Current_Platform_cache = self.BuildDatabase[self.MetaFile, Arch, Target, Toolchain]
-                        MetaFile_cache[Arch] = set()
                         for Pkey in Current_Platform_cache.Modules:
                             MetaFile_cache[Arch].add(Current_Platform_cache.Modules[Pkey].MetaFile)
                     for Inf in self.FdfProfile.InfDict[key]: