[llvm] r196341 - Produce deterministic coff files.

[Rafael Espindola]

Author: rafael
Date: Tue Dec  3 20:02:55 2013
New Revision: 196341

URL: http://llvm.org/viewvc/llvm-project?rev=196341&view=rev
Log:
Produce deterministic coff files.

Added:
    llvm/trunk/test/MC/COFF/timestamp.s
Modified:
    llvm/trunk/lib/MC/WinCOFFObjectWriter.cpp

Modified: llvm/trunk/lib/MC/WinCOFFObjectWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/WinCOFFObjectWriter.cpp?rev=196341&r1=196340&r2=196341&view=diff
==============================================================================
--- llvm/trunk/lib/MC/WinCOFFObjectWriter.cpp (original)
+++ llvm/trunk/lib/MC/WinCOFFObjectWriter.cpp Tue Dec  3 20:02:55 2013
@@ -845,7 +845,8 @@ void WinCOFFObjectWriter::WriteObject(MC
 
   Header.PointerToSymbolTable = offset;
 
-  Header.TimeDateStamp = sys::TimeValue::now().toEpochTime();
+  // We want a deterministic output. It looks like GUN as also writes 0 in here.
+  Header.TimeDateStamp = 0;
 
   // Write it all to disk...
   WriteFileHeader(Header);

Added: llvm/trunk/test/MC/COFF/timestamp.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/COFF/timestamp.s?rev=196341&view=auto
==============================================================================
--- llvm/trunk/test/MC/COFF/timestamp.s (added)
+++ llvm/trunk/test/MC/COFF/timestamp.s Tue Dec  3 20:02:55 2013
@@ -0,0 +1,4 @@
+// RUN: llvm-mc -filetype=obj -triple i686-pc-win32 %s -o - | llvm-readobj -h | FileCheck %s
+
+// CHECK: ImageFileHeader {
+// CHECK:   TimeDateStamp: {{.*}} (0x0)