From b326986de02850926631480f58e75f1fda7f4752 Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter@pcc.me.uk>
Date: Wed, 1 Jun 2016 02:58:40 +0000
Subject: DwarfDebug: Simplify. NFC.

llvm-svn: 271360
---
 llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

(limited to 'llvm/lib/CodeGen')

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 6195cae2052..51226fd639c 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -470,12 +470,8 @@ void DwarfDebug::beginModule() {
 
   const Module *M = MMI->getModule();
 
-  unsigned NumDebugCUs = 0;
-  for (DICompileUnit *CUNode : M->debug_compile_units()) {
-    (void)CUNode;
-    ++NumDebugCUs;
-  }
-
+  unsigned NumDebugCUs = std::distance(M->debug_compile_units_begin(),
+                                       M->debug_compile_units_end());
   // Tell MMI whether we have debug info.
   MMI->setDebugInfoAvailability(NumDebugCUs > 0);
   SingleCU = NumDebugCUs == 1;
-- 
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