Add fabs(<4 x float>) to the integrated ARM assembler.

src/IceTargetLoweringARM32.cpp

Index: src/IceTargetLoweringARM32.cpp
diff --git a/src/IceTargetLoweringARM32.cpp b/src/IceTargetLoweringARM32.cpp
index 85e0a65214283b6b5cd6d782c2774c987a1afd19..1abd170b381bc0e96c6e00886cc3edc3abaef224 100644
--- a/src/IceTargetLoweringARM32.cpp
+++ b/src/IceTargetLoweringARM32.cpp
@@ -5036,10 +5036,6 @@ void TargetARM32::lowerIntrinsicCall(const InstIntrinsicCall *Instr) {
   case Intrinsics::Fabs: {
     Type DestTy = Dest->getType();
     Variable *T = makeReg(DestTy);
-    if (isVectorType(DestTy)) {
-      UnimplementedLoweringError(this, Instr);
-      return;
-    }
     _vabs(T, legalizeToReg(Instr->getArg(0)));
     _mov(Dest, T);
     return;