Revert r211399, "Generate native unwind info on Win64"

It broke Legacy JIT Tests on x86_64-{mingw32|msvc}, aka Windows x64.

llvm-svn: 211480

1 files changed, 5 insertions, 10 deletions

diff --git a/llvm/lib/MC/MCObjectFileInfo.cpp b/llvm/lib/MC/MCObjectFileInfo.cpp
index 971b1a6e40b..b76aaa47239 100644
--- a/llvm/lib/MC/MCObjectFileInfo.cpp
+++ b/llvm/lib/MC/MCObjectFileInfo.cpp
@@ -650,16 +650,11 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
   // though it contains relocatable pointers.  In PIC mode, this is probably a
   // big runtime hit for C++ apps.  Either the contents of the LSDA need to be
   // adjusted or this should be a data section.
-  assert(T.isOSWindows() && "Windows is the only supported COFF target");
-  if (T.getArch() == Triple::x86_64) {
-    // On Windows 64 with SEH, the LSDA is emitted into the .xdata section
-    LSDASection = 0;
-  } else {
-    LSDASection = Ctx->getCOFFSection(".gcc_except_table",
-                                      COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                          COFF::IMAGE_SCN_MEM_READ,
-                                      SectionKind::getReadOnly());
-  }
+  LSDASection =
+    Ctx->getCOFFSection(".gcc_except_table",
+                        COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                        COFF::IMAGE_SCN_MEM_READ,
+                        SectionKind::getReadOnly());
 
   // Debug info.
   COFFDebugSymbolsSection =