[llvm-commits] [llvm-gcc-4.2] r53130 - /llvm-gcc-4.2/trunk/gcc/cgraphunit.c
clattner at apple.com
Thu Jul 3 21:58:17 CDT 2008
On Jul 3, 2008, at 5:28 PM, Dale Johannesen wrote:
> Author: johannes
> Date: Thu Jul 3 19:28:07 2008
> New Revision: 53130
> URL: http://llvm.org/viewvc/llvm-project?rev=53130&view=rev
> Do not emit unreferenced static functions at -O0.
> This is the gcc-4.0 behavior, changed deliberately
> in gcc-4.2, see PR 24561. After discussion Chris,
> Evan and I agreed the 4.0 behavior is better so
> we're going back to that.
> Note this applies to C++, not C by default, because
> you also need -funit-at-a-time (default in C++ only).
FWIW, the major issue here is that emitting dead static functions at -
O0 -g pulls in debug info for them. For a simple file that includes
something like <iostream> this is majority of the debug info,
regardless of whether streams are used or not.
Thanks for tracking this down Dale!
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