leopard and above support alignment for common symbols.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45493 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCSubtarget.cpp b/lib/Target/PowerPC/PPCSubtarget.cpp
index 82876d7..0a1e6a7 100644
--- a/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -67,8 +67,8 @@
, 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 @@
// 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 {