[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/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 92d1d86a285..88b316c1f9f 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -852,7 +852,7 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM,
   if (!Subtarget->hasV6Ops())
     setOperationAction(ISD::BSWAP, MVT::i32, Expand);
 
-  bool hasDivide = Subtarget->isThumb() ? Subtarget->hasDivide()
+  bool hasDivide = Subtarget->isThumb() ? Subtarget->hasDivideInThumbMode()
                                         : Subtarget->hasDivideInARMMode();
   if (!hasDivide) {
     // These are expanded into libcalls if the cpu doesn't have HW divider.
@@ -860,7 +860,7 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::UDIV,  MVT::i32, LibCall);
   }
 
-  if (Subtarget->isTargetWindows() && !Subtarget->hasDivide()) {
+  if (Subtarget->isTargetWindows() && !Subtarget->hasDivideInThumbMode()) {
     setOperationAction(ISD::SDIV, MVT::i32, Custom);
     setOperationAction(ISD::UDIV, MVT::i32, Custom);
 
@@ -13043,7 +13043,7 @@ SDValue ARMTargetLowering::LowerDivRem(SDValue Op, SelectionDAG &DAG) const {
   //     rem = a - b * div
   //     return {div, rem}
   // This should be lowered into UDIV/SDIV + MLS later on.
-  bool hasDivide = Subtarget->isThumb() ? Subtarget->hasDivide()
+  bool hasDivide = Subtarget->isThumb() ? Subtarget->hasDivideInThumbMode()
                                         : Subtarget->hasDivideInARMMode();
   if (hasDivide && Op->getValueType(0).isSimple() &&
       Op->getSimpleValueType(0) == MVT::i32) {