From f3e8502cc18b4e8e49d99d6910c15c4d68658d1d Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc@gmail.com>
Date: Tue, 10 Jan 2012 18:08:01 +0000
Subject: Add 'llvm_unreachable' to passify GCC's understanding of the
 constraints of several newly un-defaulted switches. This also helps
 optimizers (including LLVM's) recognize that every case is covered, and we
 should assume as much.

llvm-svn: 147861
---
 llvm/lib/Support/APFloat.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'llvm/lib/Support/APFloat.cpp')

diff --git a/llvm/lib/Support/APFloat.cpp b/llvm/lib/Support/APFloat.cpp
index f4ca0fb..8913dd6d 100644
--- a/llvm/lib/Support/APFloat.cpp
+++ b/llvm/lib/Support/APFloat.cpp
@@ -1172,6 +1172,7 @@ APFloat::roundAwayFromZero(roundingMode rounding_mode,
   case rmTowardNegative:
     return sign == true;
   }
+  llvm_unreachable("Invalid rounding mode found");
 }
 
 APFloat::opStatus
-- 
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