Add Windows patches for LLVM 3.9

deps/Versions.make

@@ -1,5 +1,4 @@
 LLVM_VER = 3.7.1
-LLVM_LIB_SUFFIX =
 PCRE_VER = 10.22
 DSFMT_VER = 2.2.3
 LAPACK_VER = 3.5.0

deps/llvm.mk

@@ -98,6 +98,9 @@ LLVM_FLAGS += --disable-assertions
 endif # LLVM_ASSERTIONS
 ifeq ($(LLVM_DEBUG), 1)
 LLVM_FLAGS += --disable-optimized --enable-debug-symbols --enable-keep-symbols
+ifeq ($(OS), WINNT)
+LLVM_CXXFLAGS += -Wa,-mbig-obj
+endif # OS == WINNT
 else
 LLVM_FLAGS += --enable-optimized
 endif # LLVM_DEBUG
@@ -478,6 +481,11 @@ $(eval $(call LLVM_PATCH,llvm-PR22923)) # Remove for 4.0
 $(eval $(call LLVM_PATCH,llvm-r282182)) # Remove for 4.0
 $(eval $(call LLVM_PATCH,llvm-arm-fix-prel31))
 $(eval $(call LLVM_PATCH,llvm-D25865-cmakeshlib))
+# Cygwin and openSUSE still use win32-threads mingw, https://llvm.org/bugs/show_bug.cgi?id=26365
+$(eval $(call LLVM_PATCH,llvm-3.9.0_threads))
+$(eval $(call LLVM_PATCH,llvm-3.9.0_cygwin)) # R283427, Remove for 4.0
+$(eval $(call LLVM_PATCH,llvm-3.9.0_win64-reloc-dwarf))
+$(eval $(call LLVM_PATCH,llvm-3.9.0_D27296-libssp))
 endif # LLVM_VER
 
 ifeq ($(LLVM_VER),3.7.1)

deps/patches/llvm-3.9.0_D27296-libssp.patch

@@ -0,0 +1,47 @@
+From e95516f77127ca534775d5f8d8cbb6e2e9c3f993 Mon Sep 17 00:00:00 2001
+From: Valentin Churavy <[email protected]>
+Date: Thu, 1 Dec 2016 18:48:30 +0900
+Subject: [PATCH] Don't assume mingw is providing SSP functions
+
+Summary:
+Mingw is indirectly targeting msvcrt*.dll and we can't guarantee that
+these functions will be available during JIT'ing.
+
+Differential Revision: https://reviews.llvm.org/D27296
+---
+ lib/Target/X86/X86ISelLowering.cpp | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
+index 44eae35..a932792 100644
+--- a/lib/Target/X86/X86ISelLowering.cpp
++++ b/lib/Target/X86/X86ISelLowering.cpp
+@@ -2016,7 +2016,7 @@ Value *X86TargetLowering::getIRStackGuard(IRBuilder<> &IRB) const {
+
+ void X86TargetLowering::insertSSPDeclarations(Module &M) const {
+ // MSVC CRT provides functionalities for stack protection.
+- if (Subtarget.getTargetTriple().isOSMSVCRT()) {
++ if (Subtarget.getTargetTriple().isWindowsMSVCEnvironment()) {
+ // MSVC CRT has a global variable holding security cookie.
+ M.getOrInsertGlobal("__security_cookie",
+ Type::getInt8PtrTy(M.getContext()));
+@@ -2038,14 +2038,14 @@ void X86TargetLowering::insertSSPDeclarations(Module &M) const {
+
+ Value *X86TargetLowering::getSDagStackGuard(const Module &M) const {
+ // MSVC CRT has a global variable holding security cookie.
+- if (Subtarget.getTargetTriple().isOSMSVCRT())
++ if (Subtarget.getTargetTriple().isWindowsMSVCEnvironment())
+ return M.getGlobalVariable("__security_cookie");
+ return TargetLowering::getSDagStackGuard(M);
+ }
+
+ Value *X86TargetLowering::getSSPStackGuardCheck(const Module &M) const {
+ // MSVC CRT has a function to validate security cookie.
+- if (Subtarget.getTargetTriple().isOSMSVCRT())
++ if (Subtarget.getTargetTriple().isWindowsMSVCEnvironment())
+ return M.getFunction("__security_check_cookie");
+ return TargetLowering::getSSPStackGuardCheck(M);
+ }
+-- 
+2.10.2
+

deps/patches/llvm-3.9.0_cygwin.patch

@@ -0,0 +1,23 @@
+From 9f7957830512dbcddd9cb5542080eb2d1cdd705b Mon Sep 17 00:00:00 2001
+From: Nuno Lopes <[email protected]>
+Date: Thu, 6 Oct 2016 09:32:16 +0000
+Subject: [PATCH] fix build on cygwin Cygwin has dlfcn.h, but no Dl_info
+
+git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283427 91177308-0d34-0410-b5e6-96231b3b80d8
+---
+ lib/Support/Unix/Signals.inc | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/Support/Unix/Signals.inc b/lib/Support/Unix/Signals.inc
+index 46b640a..9752b70 100644
+--- a/lib/Support/Unix/Signals.inc
++++ b/lib/Support/Unix/Signals.inc
+@@ -412,7 +412,7 @@ void llvm::sys::PrintStackTrace(raw_ostream &OS) {
+
+ if (printSymbolizedStackTrace(Argv0, StackTrace, depth, OS))
+ return;
+-#if HAVE_DLFCN_H && __GNUG__
++#if HAVE_DLFCN_H && __GNUG__ && !defined(__CYGWIN__)
+ int width = 0;
+ for (int i = 0; i < depth; ++i) {
+ Dl_info dlinfo;