[PowerPC] 32-bit ELF PIC support
This adds initial support for PPC32 ELF PIC (Position Independent Code; the
-fPIC variety), thus rectifying a long-standing deficiency in the PowerPC
backend.
Patch by Justin Hibbits!
llvm-svn: 213427
diff --git a/llvm/lib/Target/PowerPC/PPCMCInstLower.cpp b/llvm/lib/Target/PowerPC/PPCMCInstLower.cpp
index f8e84a5..6680413 100644
--- a/llvm/lib/Target/PowerPC/PPCMCInstLower.cpp
+++ b/llvm/lib/Target/PowerPC/PPCMCInstLower.cpp
@@ -13,6 +13,7 @@
//===----------------------------------------------------------------------===//
#include "PPC.h"
+#include "PPCSubtarget.h"
#include "MCTargetDesc/PPCMCExpr.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Twine.h"
@@ -39,12 +40,14 @@
Mangler *Mang = AP.Mang;
const DataLayout *DL = TM.getDataLayout();
MCContext &Ctx = AP.OutContext;
+ bool isDarwin = TM.getSubtarget<PPCSubtarget>().isDarwin();
SmallString<128> Name;
StringRef Suffix;
- if (MO.getTargetFlags() == PPCII::MO_DARWIN_STUB)
- Suffix = "$stub";
- else if (MO.getTargetFlags() & PPCII::MO_NLP_FLAG)
+ if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB) {
+ if (isDarwin)
+ Suffix = "$stub";
+ } else if (MO.getTargetFlags() & PPCII::MO_NLP_FLAG)
Suffix = "$non_lazy_ptr";
if (!Suffix.empty())
@@ -68,7 +71,7 @@
// If the target flags on the operand changes the name of the symbol, do that
// before we return the symbol.
- if (MO.getTargetFlags() == PPCII::MO_DARWIN_STUB) {
+ if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB && isDarwin) {
MachineModuleInfoImpl::StubValueTy &StubSym =
getMachOMMI(AP).getFnStubEntry(Sym);
if (StubSym.getPointer())
@@ -136,6 +139,9 @@
break;
}
+ if (MO.getTargetFlags() == PPCII::MO_PLT_OR_STUB && !isDarwin)
+ RefKind = MCSymbolRefExpr::VK_PLT;
+
const MCExpr *Expr = MCSymbolRefExpr::Create(Symbol, RefKind, Ctx);
if (!MO.isJTI() && MO.getOffset())