#include "llvm/Module.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
using namespace llvm;
-cl::opt<X86Subtarget::AsmWriterFlavorTy>
+static cl::opt<X86Subtarget::AsmWriterFlavorTy>
AsmWriterFlavor("x86-asm-syntax", cl::init(X86Subtarget::Unset),
cl::desc("Choose style of code to emit from X86 backend:"),
cl::values(
if (isTargetDarwin()) {
return (!isDirectCall &&
(GV->hasWeakLinkage() || GV->hasLinkOnceLinkage() ||
+ GV->hasCommonLinkage() ||
(GV->isDeclaration() && !GV->hasNotBeenReadFromBitcode())));
} else if (isTargetELF()) {
- // Extra load is needed for all non-statics.
- return (!isDirectCall &&
- (GV->isDeclaration() || !GV->hasInternalLinkage()));
+ // Extra load is needed for all externally visible.
+ if (isDirectCall)
+ return false;
+ if (GV->hasInternalLinkage() || GV->hasHiddenVisibility())
+ return false;
+ return true;
} else if (isTargetCygMing() || isTargetWindows()) {
return (GV->hasDLLImportLinkage());
}
: AsmFlavor(AsmWriterFlavor)
, PICStyle(PICStyle::None)
, X86SSELevel(NoMMXSSE)
+ , X863DNowLevel(NoThreeDNow)
, HasX86_64(false)
, DarwinVers(0)
+ , IsLinux(false)
, stackAlignment(8)
// FIXME: this is a known good value for Yonah. How about others?
, MaxInlineSizeThreshold(128)
, Is64Bit(is64Bit)
, TargetType(isELF) { // Default to ELF unless otherwise specified.
-
+
// Determine default and user specified characteristics
if (!FS.empty()) {
// If feature string is not empty, parse features string.
DarwinVers = atoi(&TT[Pos+7]);
else
DarwinVers = 8; // Minimum supported darwin is Tiger.
+ } else if (TT.find("linux") != std::string::npos) {
+ // Linux doesn't imply ELF, but we don't currently support anything else.
+ TargetType = isELF;
+ IsLinux = true;
} else if (TT.find("cygwin") != std::string::npos) {
TargetType = isCygwin;
} else if (TT.find("mingw") != std::string::npos) {
#elif defined(_WIN32) || defined(_WIN64)
TargetType = isWindows;
+#elif defined(__linux__)
+ // Linux doesn't imply ELF, but we don't currently support anything else.
+ TargetType = isELF;
+ IsLinux = true;
#endif
}
? X86Subtarget::Intel : X86Subtarget::ATT;
}
- if (TargetType == isDarwin ||
- TargetType == isCygwin ||
- TargetType == isMingw ||
- TargetType == isWindows ||
- (TargetType == isELF && Is64Bit))
+ // Stack alignment is 16 bytes on Darwin (both 32 and 64 bit) and for all 64
+ // bit targets.
+ if (TargetType == isDarwin || Is64Bit)
stackAlignment = 16;
+
+ if (StackAlignment)
+ stackAlignment = StackAlignment;
}