#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Host.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
#include "llvm/ADT/SmallVector.h"
using namespace llvm;
}
X86Subtarget::X86Subtarget(const std::string &TT, const std::string &FS,
- bool is64Bit)
+ bool is64Bit, unsigned StackAlignOverride)
: PICStyle(PICStyles::None)
, X86SSELevel(NoMMXSSE)
, X863DNowLevel(NoThreeDNow)
, TargetTriple(TT)
, Is64Bit(is64Bit) {
- // default to hard float ABI
- if (FloatABIType == FloatABI::Default)
- FloatABIType = FloatABI::Hard;
-
// Determine default and user specified characteristics
if (!FS.empty()) {
// If feature string is not empty, parse features string.
// Stack alignment is 16 bytes on Darwin, FreeBSD, Linux and Solaris (both
// 32 and 64 bit) and for all 64-bit targets.
- if (isTargetDarwin() || isTargetFreeBSD() || isTargetLinux() ||
- isTargetSolaris() || Is64Bit)
+ if (StackAlignOverride)
+ stackAlignment = StackAlignOverride;
+ else if (isTargetDarwin() || isTargetFreeBSD() || isTargetLinux() ||
+ isTargetSolaris() || Is64Bit)
stackAlignment = 16;
-
- if (StackAlignment)
- stackAlignment = StackAlignment;
-}
-
-/// IsCalleePop - Determines whether the callee is required to pop its
-/// own arguments. Callee pop is necessary to support tail calls.
-bool X86Subtarget::IsCalleePop(bool IsVarArg,
- CallingConv::ID CallingConv) const {
- if (IsVarArg)
- return false;
-
- switch (CallingConv) {
- default:
- return false;
- case CallingConv::X86_StdCall:
- return !is64Bit();
- case CallingConv::X86_FastCall:
- return !is64Bit();
- case CallingConv::X86_ThisCall:
- return !is64Bit();
- case CallingConv::Fast:
- return GuaranteedTailCallOpt;
- case CallingConv::GHC:
- return GuaranteedTailCallOpt;
- }
}