Revert r211399, "Generate native unwind info on Win64"

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211480 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 5 insertions, 12 deletions

diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 971b1a6e40..b76aaa4723 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/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 =
diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp
index 2a6097a7b4..7dccf0d751 100644
--- a/lib/MC/MCStreamer.cpp
+++ b/lib/MC/MCStreamer.cpp
@@ -526,8 +526,6 @@ void MCStreamer::EmitWin64EHSetFrame(unsigned Register, unsigned Offset) {
     report_fatal_error("Frame register and offset already specified!");
   if (Offset & 0x0F)
     report_fatal_error("Misaligned frame pointer offset!");
-  if (Offset > 240)
-    report_fatal_error("Frame offset must be less than or equal to 240!");
   MCSymbol *Label = getContext().CreateTempSymbol();
   MCWin64EHInstruction Inst(Win64EH::UOP_SetFPReg, Label, Register, Offset);
   EmitLabel(Label);