[Bug 38616] New: Wine 1.7.43 (32-bit) cannot be built by GCC 4.3.2 with -O3 flag.

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=38616

            Bug ID: 38616
           Summary: Wine 1.7.43 (32-bit) cannot be built by GCC 4.3.2 with
                    -O3 flag.
           Product: Wine
           Version: 1.7.43
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: wine-bugs at winehq.org
          Reporter: kol at MV8660.spb.edu
      Distribution: ---

Created attachment 51516
  --> https://bugs.winehq.org/attachment.cgi?id=51516
GCC error message

GCC 4.3.2 with the optimization flag -O3 (and also -O2 or -O1) cannot 
compile 32-bit Wine 1.7.43. An error is occured in "dlls/ntdll/server.c":

server.c: In function 'server_get_unix_fd':
server.c:971: error: unable to find a register to spill in class
'GENERAL_REGS'.

The full text of the error message is in the attachment. This is not an issue 
for Wine 1.7.42 and I found that the regression is caused by the commit

commit 40c912b4bef45099d465ddb9a7cb16f33ec4ed3c
Author:: Sebastian Lackner <sebastian at fds-team.de>
Date: Thu, 30 Apr 2015 04:22:53 +0200

 ntdll: Use lockfree implementation for get_cached_fd.

If the optimization level is set to -O0 only for "dlls/ntdll/server.c" 
(by manual editing of "dlls/ntdll/Makefile"), the process of compilation 
completes successfully. Optimization flags other than -O do not affect 
the result.

GCC version is 4.3.2 (my system is Fedora 10). Wine is configured with 
CFLAGS="-mtune=amdfam10 -march=amdfam10 -mfpmath=sse -O3 -ffast-math -msse3
-funroll-all-loops".

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