commit 79102d97256daf3cd9ce4e468883af6e7bced09f
author Chris Lattner <sabre@nondot.org> Tue Aug 03 16:57:03 2010 +0000
committer Chris Lattner <sabre@nondot.org> Tue Aug 03 16:57:03 2010 +0000
tree a97cf140c5149a2a18c717672bbf29a3cd60e2d9
parent 278008f5460f54be1fcde8d83076b248a6d417b8

avoid undefined behavior negating minint.

llvm-svn: 110117

llvm/lib/Bitcode/Writer/BitcodeWriter.cpp

diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index 93ca8cd..776c2d4 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -735,8 +735,8 @@
       Code = bitc::CST_CODE_UNDEF;
     } else if (const ConstantInt *IV = dyn_cast<ConstantInt>(C)) {
       if (IV->getBitWidth() <= 64) {
-        int64_t V = IV->getSExtValue();
-        if (V >= 0)
+        uint64_t V = IV->getSExtValue();
+        if ((int64_t)V >= 0)
           Record.push_back(V << 1);
         else
           Record.push_back((-V << 1) | 1);