MathExtras: Bring Count(Trailing|Leading)Ones and CountPopulation in line with countT...

[oota-llvm.git] / lib / Target / ARM / ARMISelLowering.cpp

diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 791e08f1411a4940e069ab0eeb6f698f153fb9f7..3babd20716781a50386ffa458869e7230530dcd9 100644 (file)
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -10858,11 +10858,7 @@ bool ARM::isBitFieldInvertedMask(unsigned v) {
 
   // there can be 1's on either or both "outsides", all the "inside"
   // bits must be 0's
-  unsigned TO = CountTrailingOnes_32(v);
-  unsigned LO = CountLeadingOnes_32(v);
-  v = (v >> TO) << TO;
-  v = (v << LO) >> LO;
-  return v == 0;
+  return isShiftedMask_32(~v);
 }
 
 /// isFPImmLegal - Returns true if the target can instruction select the