1 files changed, 43 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.h b/llvm/lib/Target/PowerPC/PPCSubtarget.h
index d96c2893aee9..044e982740e9 100644
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.h
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.h
@@ -57,6 +57,7 @@ namespace PPC {
     DIR_PWR7,
     DIR_PWR8,
     DIR_PWR9,
+    DIR_PWR_FUTURE,
     DIR_64
   };
 }
@@ -84,7 +85,7 @@ protected:
   InstrItineraryData InstrItins;
 
   /// Which cpu directive was used.
-  unsigned DarwinDirective;
+  unsigned CPUDirective;
 
   /// Used by the ISel to turn in optimizations for POWER4-derived architectures
   bool HasMFOCRF;
@@ -123,6 +124,7 @@ protected:
   bool IsPPC4xx;
   bool IsPPC6xx;
   bool FeatureMFTB;
+  bool AllowsUnalignedFPAccess;
   bool DeprecatedDST;
   bool HasLazyResolverStubs;
   bool IsLittleEndian;
@@ -169,8 +171,11 @@ public:
   Align getStackAlignment() const { return StackAlignment; }
 
   /// getDarwinDirective - Returns the -m directive specified for the cpu.
+  unsigned getDarwinDirective() const { return CPUDirective; }
+
+  /// getCPUDirective - Returns the -m directive specified for the cpu.
   ///
-  unsigned getDarwinDirective() const { return DarwinDirective; }
+  unsigned getCPUDirective() const { return CPUDirective; }
 
   /// getInstrItins - Return the instruction itineraries based on subtarget
   /// selection.
@@ -270,6 +275,7 @@ public:
   bool vectorsUseTwoUnits() const {return VectorsUseTwoUnits; }
   bool isE500() const { return IsE500; }
   bool isFeatureMFTB() const { return FeatureMFTB; }
+  bool allowsUnalignedFPAccess() const { return AllowsUnalignedFPAccess; }
   bool isDeprecatedDST() const { return DeprecatedDST; }
   bool hasICBT() const { return HasICBT; }
   bool hasInvariantFunctionDescriptors() const {
@@ -347,6 +353,41 @@ public:
   /// True if the GV will be accessed via an indirect symbol.
   bool isGVIndirectSymbol(const GlobalValue *GV) const;
 
+  /// True if the ABI is descriptor based.
+  bool usesFunctionDescriptors() const {
+    // Both 32-bit and 64-bit AIX are descriptor based. For ELF only the 64-bit
+    // v1 ABI uses descriptors.
+    return isAIXABI() || (is64BitELFABI() && !isELFv2ABI());
+  }
+
+  unsigned descriptorTOCAnchorOffset() const {
+    assert(usesFunctionDescriptors() &&
+           "Should only be called when the target uses descriptors.");
+    return IsPPC64 ? 8 : 4;
+  }
+
+  unsigned descriptorEnvironmentPointerOffset() const {
+    assert(usesFunctionDescriptors() &&
+           "Should only be called when the target uses descriptors.");
+    return IsPPC64 ? 16 : 8;
+  }
+
+  MCRegister getEnvironmentPointerRegister() const {
+    assert(usesFunctionDescriptors() &&
+           "Should only be called when the target uses descriptors.");
+     return IsPPC64 ? PPC::X11 : PPC::R11;
+  }
+
+  MCRegister getTOCPointerRegister() const {
+    assert((is64BitELFABI() || isAIXABI()) &&
+           "Should only be called when the target is a TOC based ABI.");
+    return IsPPC64 ? PPC::X2 : PPC::R2;
+  }
+
+  MCRegister getStackPointerRegister() const {
+    return IsPPC64 ? PPC::X1 : PPC::R1;
+  }
+
   bool isXRaySupported() const override { return IsPPC64 && IsLittleEndian; }
 };
 } // End llvm namespace