diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index c620e8c..958648c 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -39,6 +39,9 @@
     = Ctx->getMachOSection("__DATA", "__data", 0,
                            SectionKind::getDataRel());
 
+  // BSSSection might not be expected initialized on msvc.
+  BSSSection = 0;
+
   TLSDataSection // .tdata
     = Ctx->getMachOSection("__DATA", "__thread_data",
                            MCSectionMachO::S_THREAD_LOCAL_REGULAR,
diff --git a/test/CodeGen/ARM/coalesce-dbgvalue.ll b/test/CodeGen/ARM/coalesce-dbgvalue.ll
index a51c6e0..9ddd66c 100644
--- a/test/CodeGen/ARM/coalesce-dbgvalue.ll
+++ b/test/CodeGen/ARM/coalesce-dbgvalue.ll
@@ -6,9 +6,6 @@
 ; instruction which must be updated during
 ; ConnectedVNInfoEqClasses::Distribute().
 
-; FIXME: Investigating.
-; XFAIL: win32
-
 target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
 target triple = "thumbv7-apple-ios3.0.0"
 
diff --git a/test/DebugInfo/X86/dbg-subrange.ll b/test/DebugInfo/X86/dbg-subrange.ll
index 10244f7..62580dc 100644
--- a/test/DebugInfo/X86/dbg-subrange.ll
+++ b/test/DebugInfo/X86/dbg-subrange.ll
@@ -3,9 +3,6 @@
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.7.2"
 
-; FIXME: Investigating.
-; XFAIL: win32
-
 @s = common global [4294967296 x i8] zeroinitializer, align 16
 ;CHECK: .long	4294967295
 
diff --git a/test/DebugInfo/X86/stringpool.ll b/test/DebugInfo/X86/stringpool.ll
index 40b5977..c8cba73 100644
--- a/test/DebugInfo/X86/stringpool.ll
+++ b/test/DebugInfo/X86/stringpool.ll
@@ -1,9 +1,6 @@
 ; RUN: llc -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s --check-prefix=LINUX
 ; RUN: llc -mtriple=x86_64-darwin < %s | FileCheck %s --check-prefix=DARWIN
 
-; FIXME: Investigating.
-; XFAIL: win32
-
 @yyyy = common global i32 0, align 4
 
 !llvm.dbg.cu = !{!0}