Author: rnk
Date: Wed Jan 4 12:16:32 2017
New Revision: 290979
URL: http://llvm.org/viewvc/llvm-project?rev=290979&view=rev
Log:
Accept and ignore -Wa,-mbig-obj on COFF targets for gas compatibility
LLVM's integrated assembler will automatically switch to big objects
when there are more than 2**16 sections.
Patch by Kyra!
Added:
cfe/trunk/test/Driver/mbig-obj.c
Modified:
cfe/trunk/lib/Driver/Tools.cpp
Modified: cfe/trunk/lib/Driver/Tools.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=290979&r1=290978&r2=290979&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Tools.cpp (original)
+++ cfe/trunk/lib/Driver/Tools.cpp Wed Jan 4 12:16:32 2017
@@ -3067,6 +3067,10 @@ static void CollectArgsForIntegratedAsse
continue;
}
+ if (C.getDefaultToolChain().getTriple().isOSBinFormatCOFF() &&
+ Value == "-mbig-obj")
+ continue; // LLVM handles bigobj automatically
+
switch (C.getDefaultToolChain().getArch()) {
default:
break;
Added: cfe/trunk/test/Driver/mbig-obj.c
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/mbig-obj.c?rev=290979&view=auto
==============================================================================
--- cfe/trunk/test/Driver/mbig-obj.c (added)
+++ cfe/trunk/test/Driver/mbig-obj.c Wed Jan 4 12:16:32 2017
@@ -0,0 +1,9 @@
+// RUN: %clang --target=x86_64-windows -c -Wa,-mbig-obj %s 2>&1 | FileCheck %s
--check-prefix=WINDOWS
+// RUN: %clang --target=x86_64-windows -c -Xassembler -mbig-obj %s 2>&1 |
FileCheck %s --check-prefix=WINDOWS
+// RUN: not %clang --target=x86_64-linux -c -Wa,-mbig-obj %s 2>&1 | FileCheck
%s --check-prefix=LINUX
+// RUN: not %clang --target=x86_64-linux -c -Xassembler -mbig-obj %s 2>&1 |
FileCheck %s --check-prefix=LINUX
+// WINDOWS-NOT: argument unused during compilation
+// LINUX: unsupported argument '-mbig-obj' to option '{{(Wa,|Xassembler)}}'
+#ifdef _WIN32
+#warning "produce non-empty output for FileCheck"
+#endif
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