From ec8c2db283e11fa798e459a1da8fd1da5014ed8e Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Wed, 21 May 2014 05:15:01 +0000
Subject: [PATCH] MC: mark COFF .drectve section as REMOVE

The .drectve section should be marked as IMAGE_SCN_LNK_REMOVE.  This matches what
the MSVC toolchain does and accurately reflects that this section should not be
emitted into the final binary.  This section is merely information for the
linker, comprising of additional linker directives.

llvm-svn: 209273
---
 llvm/lib/MC/MCObjectFileInfo.cpp                |  2 +-
 .../COFF/directive-section-characteristics.ll   | 17 +++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 llvm/test/MC/COFF/directive-section-characteristics.ll

diff --git a/llvm/lib/MC/MCObjectFileInfo.cpp b/llvm/lib/MC/MCObjectFileInfo.cpp
index e4bcfa257f69..e5377890da5b 100644
--- a/llvm/lib/MC/MCObjectFileInfo.cpp
+++ b/llvm/lib/MC/MCObjectFileInfo.cpp
@@ -739,7 +739,7 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
 
   DrectveSection =
     Ctx->getCOFFSection(".drectve",
-                        COFF::IMAGE_SCN_LNK_INFO,
+                        COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE,
                         SectionKind::getMetadata());
 
   PDataSection =
diff --git a/llvm/test/MC/COFF/directive-section-characteristics.ll b/llvm/test/MC/COFF/directive-section-characteristics.ll
new file mode 100644
index 000000000000..ca8102af641d
--- /dev/null
+++ b/llvm/test/MC/COFF/directive-section-characteristics.ll
@@ -0,0 +1,17 @@
+; RUN: llc -mtriple i686-windows -filetype obj -o - %s | llvm-readobj -sections \
+; RUN:    | FileCheck %s
+
+define dllexport void @function() {
+entry:
+  ret void
+}
+
+; CHECK: Section {
+; CHECK:   Name: .drectve
+; CHECK:   Characteristics [
+; CHECK:     IMAGE_SCN_ALIGN_1BYTES
+; CHECK:     IMAGE_SCN_LNK_INFO
+; CHECK:     IMAGE_SCN_LNK_REMOVE
+; CHECK:   ]
+; CHECK: }
+