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leopard and above support alignment for common symbols.

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llvm-svn: 45493
This commit is contained in:
Chris Lattner 2008-01-02 19:35:16 +00:00
parent 5843183ca2
commit abd12447f8
3 changed files with 32 additions and 11 deletions
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3
lib/Target/PowerPC/PPCAsmPrinter.cpp
View File

@ -930,6 +930,9 @@ bool DarwinAsmPrinter::doFinalization(Module &M) {
} else {
SwitchToDataSection("\t.data", I);
O << ".comm " << name << "," << Size;
// Darwin 9 and above support aligned common data.
if (Subtarget.isDarwin9())
O << "," << Align;
}
O << "\t\t" << TAI->getCommentString() << " '" << I->getName() << "'\n";
} else {

26
lib/Target/PowerPC/PPCSubtarget.cpp
View File

@ -67,8 +67,8 @@ PPCSubtarget::PPCSubtarget(const TargetMachine &tm, const Module &M,
, HasAltivec(false)
, HasFSQRT(false)
, HasSTFIWX(false)
, IsDarwin(false)
, HasLazyResolverStubs(false) {
, HasLazyResolverStubs(false)
, DarwinVers(0) {
// Determine default and user specified characteristics
std::string CPU = "generic";
@ -100,17 +100,29 @@ PPCSubtarget::PPCSubtarget(const TargetMachine &tm, const Module &M,
// Set the boolean corresponding to the current target triple, or the default
// if one cannot be determined, to true.
const std::string& TT = M.getTargetTriple();
if (TT.length() > 5) {
IsDarwin = TT.find("-darwin") != std::string::npos;
const std::string &TT = M.getTargetTriple();
if (TT.length() > 7) {
// Determine which version of darwin this is.
unsigned DarwinPos = TT.find("-darwin");
if (DarwinPos != std::string::npos) {
if (isdigit(TT[DarwinPos+7]))
DarwinVers = atoi(&TT[DarwinPos+7]);
else
DarwinVers = 8; // Minimum supported darwin is Tiger.
}
} else if (TT.empty()) {
// Try to autosense the subtarget from the host compiler.
#if defined(__APPLE__)
IsDarwin = true;
#if __APPLE_CC__ > 5400
DarwinVers = 9; // GCC 5400+ is Leopard.
#else
DarwinVers = 8; // Minimum supported darwin is Tiger.
#endif
#endif
}
// Set up darwin-specific properties.
if (IsDarwin) {
if (isDarwin()) {
HasLazyResolverStubs = true;
AsmFlavor = NewMnemonic;
} else {

14
lib/Target/PowerPC/PPCSubtarget.h
View File

@ -71,8 +71,11 @@ protected:
bool HasAltivec;
bool HasFSQRT;
bool HasSTFIWX;
bool IsDarwin;
bool HasLazyResolverStubs;
/// DarwinVers - Nonzero if this is a darwin platform. Otherwise, the numeric
/// version of the platform, e.g. 8 = 10.4 (Tiger), 9 = 10.5 (Leopard), etc.
unsigned char DarwinVers; // Is any darwin-ppc platform.
public:
/// This constructor initializes the data members to match that
/// of the specified module.
@ -132,10 +135,13 @@ public:
bool hasAltivec() const { return HasAltivec; }
bool isGigaProcessor() const { return IsGigaProcessor; }
bool isDarwin() const { return IsDarwin; }
/// isDarwin - True if this is any darwin platform.
bool isDarwin() const { return DarwinVers != 0; }
/// isDarwin - True if this is darwin9 (leopard, 10.5) or above.
bool isDarwin9() const { return DarwinVers >= 9; }
bool isMachoABI() const { return IsDarwin || IsPPC64; }
bool isELF32_ABI() const { return !IsDarwin && !IsPPC64; }
bool isMachoABI() const { return isDarwin() || IsPPC64; }
bool isELF32_ABI() const { return !isDarwin() && !IsPPC64; }
unsigned getAsmFlavor() const {
return AsmFlavor != Unset ? unsigned(AsmFlavor) : 0;