Add new function attribute - noimplicitfloat

Update code generator to use this attribute and remove NoImplicitFloat target option.
Update llc to set this attribute when -no-implicit-float command line option is used.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72959 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Attributes.h

@@ -55,6 +55,8 @@ const Attributes Alignment = 31<<16; ///< Alignment of parameter (5 bits)
                                      // 0 means unaligned different from align 1
 const Attributes NoCapture = 1<<21; ///< Function creates no aliases of pointer
 const Attributes NoRedZone = 1<<22; /// disable redzone
+const Attributes NoImplicitFloat = 1<<23; /// disable implicit floating point
+                                          /// instructions.
 
 /// @brief Attributes that only apply to function parameters.
 const Attributes ParameterOnly = ByVal | Nest | StructRet | NoCapture;
@@ -62,7 +64,7 @@ const Attributes ParameterOnly = ByVal | Nest | StructRet | NoCapture;
 /// @brief Attributes that only apply to function.
 const Attributes FunctionOnly = NoReturn | NoUnwind | ReadNone | ReadOnly | 
   NoInline | AlwaysInline | OptimizeForSize | StackProtect | StackProtectReq |
-  NoRedZone;
+  NoRedZone | NoImplicitFloat;
 
 /// @brief Parameter attributes that do not apply to vararg call arguments.
 const Attributes VarArgsIncompatible = StructRet;

include/llvm/Target/TargetLowering.h

@@ -632,7 +632,8 @@ public:
   /// It returns MVT::iAny if SelectionDAG should be responsible for
   /// determining it.
   virtual MVT getOptimalMemOpType(uint64_t Size, unsigned Align,
-                                  bool isSrcConst, bool isSrcStr) const {
+                                  bool isSrcConst, bool isSrcStr,
+                                  SelectionDAG &DAG) const {
     return MVT::iAny;
   }
   

include/llvm/Target/TargetOptions.h

@@ -73,12 +73,6 @@ namespace llvm {
   /// target FP instructions.
   extern bool UseSoftFloat;
 
-  /// NoImplicitFloat - This flag is enabled when the -no-implicit-float flag is
-  /// specified on the command line.  When this flag is on, the code generator
-  /// won't generate any implicit floating point instructions. I.e., no XMM or
-  /// x87 or vectorized memcpy/memmove instructions. This is for X86 only.
-  extern bool NoImplicitFloat;
-
   /// NoZerosInBSS - By default some codegens place zero-initialized data to
   /// .bss section. This flag disables such behaviour (necessary, e.g. for
   /// crt*.o compiling).