Merge 98205 from mainline.

Work around a bug in the openbsd assembler on i386,
which doesn't support .quad correctly because it is
"really really old".  PR6528.

Yet another reason the mc assembler should take over ;-)

llvm-svn: 98309

Author: tlattner

llvm/lib/Target/X86/X86MCAsmInfo.cpp

@@ -71,7 +71,7 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &Triple) {
   AbsoluteEHSectionOffsets = false;
 }
 
-X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &Triple) {
+X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) {
   AsmTransCBE = x86_asm_table;
   AssemblerDialect = AsmWriterFlavor;
 
@@ -91,6 +91,11 @@ X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &Triple) {
   // Exceptions handling
   ExceptionsType = ExceptionHandling::Dwarf;
   AbsoluteEHSectionOffsets = false;
+  
+  // OpenBSD has buggy support for .quad in 32-bit mode, just split into two
+  // .words.
+  if (T.getOS() == Triple::OpenBSD && T.getArch() == Triple::x86)
+    Data64bitsDirective = 0;
 }
 
 MCSection *X86ELFMCAsmInfo::getNonexecutableStackSection(MCContext &Ctx) const {