Add patterns for the x86 popcnt instruction.

[oota-llvm.git] / lib / Target / X86 / X86MCAsmInfo.cpp

diff --git a/lib/Target/X86/X86MCAsmInfo.cpp b/lib/Target/X86/X86MCAsmInfo.cpp
index 1738d495842169e41ceab252d694a140ef21bd37..1ac2d7e6c6d476189c55acfb08df68349ee148f1 100644 (file)
--- a/lib/Target/X86/X86MCAsmInfo.cpp
+++ b/lib/Target/X86/X86MCAsmInfo.cpp
@@ -14,6 +14,7 @@
 #include "X86MCAsmInfo.h"
 #include "X86TargetMachine.h"
 #include "llvm/ADT/Triple.h"
+#include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCSectionELF.h"
 #include "llvm/Support/CommandLine.h"
 using namespace llvm;
@@ -55,9 +56,15 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &Triple) {
   if (!is64Bit)
     Data64bitsDirective = 0;       // we can't emit a 64-bit unit
 
-  // Leopard and above support aligned common symbols.
-  COMMDirectiveTakesAlignment = Triple.getDarwinMajorNumber() >= 9;
+  // FIXME: Darwin 10 doesn't need this.
+  if (is64Bit)
+    NeedsSetToChangeDiffSize = true;
 
+  // Use ## as a comment string so that .s files generated by llvm can go
+  // through the GCC preprocessor without causing an error.  This is needed
+  // because "clang foo.s" runs the C preprocessor, which is usually reserved
+  // for .S files on other systems.  Perhaps this is because the file system
+  // wasn't always case preserving or something.
   CommentString = "##";
   PCSymbol = ".";
 
@@ -66,59 +73,45 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &Triple) {
 
   // Exceptions handling
   ExceptionsType = ExceptionHandling::Dwarf;
-  AbsoluteEHSectionOffsets = false;
 }
 
-X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &Triple) {
+X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) {
   AsmTransCBE = x86_asm_table;
   AssemblerDialect = AsmWriterFlavor;
 
+  TextAlignFillValue = 0x90;
+
   PrivateGlobalPrefix = ".L";
   WeakRefDirective = "\t.weak\t";
-  SetDirective = "\t.set\t";
   PCSymbol = ".";
 
   // Set up DWARF directives
   HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
 
   // Debug Information
-  AbsoluteDebugSectionOffsets = true;
   SupportsDebugInformation = true;
 
   // 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 {
-  return MCSectionELF::Create(".note.GNU-stack", MCSectionELF::SHT_PROGBITS,
-                              0, SectionKind::getMetadata(), false, Ctx);
+const MCSection *X86ELFMCAsmInfo::
+getNonexecutableStackSection(MCContext &Ctx) const {
+  return Ctx.getELFSection(".note.GNU-stack", MCSectionELF::SHT_PROGBITS,
+                           0, SectionKind::getMetadata());
 }
 
 X86MCAsmInfoCOFF::X86MCAsmInfoCOFF(const Triple &Triple) {
-  AsmTransCBE = x86_asm_table;
-  AssemblerDialect = AsmWriterFlavor;
-}
-
+  if (Triple.getArch() == Triple::x86_64)
+    GlobalPrefix = "";
 
-X86WinMCAsmInfo::X86WinMCAsmInfo(const Triple &Triple) {
   AsmTransCBE = x86_asm_table;
   AssemblerDialect = AsmWriterFlavor;
 
-  GlobalPrefix = "_";
-  CommentString = ";";
-
-  PrivateGlobalPrefix = "$";
-  AlignDirective = "\tALIGN\t";
-  ZeroDirective = "\tdb\t";
-  AsciiDirective = "\tdb\t";
-  AscizDirective = 0;
-  Data8bitsDirective = "\tdb\t";
-  Data16bitsDirective = "\tdw\t";
-  Data32bitsDirective = "\tdd\t";
-  Data64bitsDirective = "\tdq\t";
-  HasDotTypeDotSizeDirective = false;
-  HasSingleParameterDotFile = false;
-
-  AlignmentIsInBytes = true;
+  TextAlignFillValue = 0x90;
 }