[llvm-commits] [llvm] r102604 - /llvm/trunk/include/llvm/ADT/SmallVector.h

[Torok Edwin]

Author: edwin
Date: Thu Apr 29 01:43:12 2010
New Revision: 102604

URL: http://llvm.org/viewvc/llvm-project?rev=102604&view=rev
Log:
Fix PR6910.

Limit alignment in SmallVector 8, otherwise GCC assumes 16 byte alignment.
opetaror new, and malloc only return 8-byte aligned memory on 32-bit Linux,
which cause a crash if code is compiled with -O3 (or -ftree-vectorize) and some
SmallVector code is vectorized.

Modified:
    llvm/trunk/include/llvm/ADT/SmallVector.h

Modified: llvm/trunk/include/llvm/ADT/SmallVector.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/SmallVector.h?rev=102604&r1=102603&r2=102604&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/SmallVector.h (original)
+++ llvm/trunk/include/llvm/ADT/SmallVector.h Thu Apr 29 01:43:12 2010
@@ -59,7 +59,7 @@
   // number of union instances for the space, which guarantee maximal alignment.
   struct U {
 #ifdef __GNUC__
-    char X __attribute__((aligned));
+    char X __attribute__((aligned(8)));
 #else
     union {
       double D;