[PATCH] D20708: Add ARM subtarget feature +long64

[Pirama Arumuga Nainar via llvm-commits]

pirama created this revision.
pirama added a reviewer: kristof.beyls.
pirama added subscribers: srhines, llvm-commits.
Herald added subscribers: rengolin, aemerson.

This patch adds an ARM subtarget feature +long64 to request that long
datatype's width and alignment be 64-bits.

Tests included in accompanying patch to Clang.

http://reviews.llvm.org/D20708

Files:
  lib/Target/ARM/ARM.td
  lib/Target/ARM/ARMSubtarget.cpp
  lib/Target/ARM/ARMSubtarget.h

Index: lib/Target/ARM/ARMSubtarget.h
===================================================================
--- lib/Target/ARM/ARMSubtarget.h
+++ lib/Target/ARM/ARMSubtarget.h
@@ -237,6 +237,9 @@
   /// Target machine allowed unsafe FP math (such as use of NEON fp)
   bool UnsafeFPMath;
 
+  /// Force long to be 64-bit type
+  bool UseLong64;
+
   /// UseSjLjEH - If true, the target uses SjLj exception handling (e.g. iOS).
   bool UseSjLjEH;
 
Index: lib/Target/ARM/ARMSubtarget.cpp
===================================================================
--- lib/Target/ARM/ARMSubtarget.cpp
+++ lib/Target/ARM/ARMSubtarget.cpp
@@ -157,6 +157,7 @@
   UseNaClTrap = false;
   GenLongCalls = false;
   UnsafeFPMath = false;
+  UseLong64 = false;
   HasV7Clrex = false;
   HasAcquireRelease = false;
 
Index: lib/Target/ARM/ARM.td
===================================================================
--- lib/Target/ARM/ARM.td
+++ lib/Target/ARM/ARM.td
@@ -188,6 +188,10 @@
                                      "Don't use movt/movw pairs for 32-bit "
                                      "imms">;
 
+def FeatureLong64 : SubtargetFeature<"long64", "UseLong64",
+                                     "true",
+                                     "long type is forced to be 64-bit">;
+
 
 //===----------------------------------------------------------------------===//
 // ARM ISAa.


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