[ARM] Rename HW div feature to HW div Thumb. NFCI.

The hardware div feature refers only to Thumb, but because of its name
it is tempting to use it to check for hardware division in general,
which may cause problems in ARM mode. See https://reviews.llvm.org/D32005.

This patch adds "Thumb" to its name, to make its scope clear. One
notable place where I haven't made the change is in the feature flag
(used with -mattr), which is still hwdiv. Changing it would also require
changes in a lot of tests, including clang tests, and it doesn't seem
like it's worth the effort.

Differential Revision: https://reviews.llvm.org/D32160

llvm-svn: 300827

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index 40993fc0aa8..d2630685d91 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -208,8 +208,8 @@ protected:
   /// FP registers for VFPv3.
   bool HasD16 = false;
 
-  /// HasHardwareDivide - True if subtarget supports [su]div
-  bool HasHardwareDivide = false;
+  /// HasHardwareDivide - True if subtarget supports [su]div in Thumb mode
+  bool HasHardwareDivideInThumb = false;
 
   /// HasHardwareDivideInARM - True if subtarget supports [su]div in ARM mode
   bool HasHardwareDivideInARM = false;
@@ -507,7 +507,7 @@ public:
     return hasNEON() && UseNEONForSinglePrecisionFP;
   }
 
-  bool hasDivide() const { return HasHardwareDivide; }
+  bool hasDivideInThumbMode() const { return HasHardwareDivideInThumb; }
   bool hasDivideInARMMode() const { return HasHardwareDivideInARM; }
   bool hasDataBarrier() const { return HasDataBarrier; }
   bool hasV7Clrex() const { return HasV7Clrex; }