[AArch64][GlobalISel] Remove unnecessary fp convert patterns. NFC

We nowadays legalize the fp converts to legal operations earlier, not requiring
patterns that select to multiple instructions.

Author: davemgreen

llvm/lib/Target/AArch64/AArch64InstrGISel.td

@@ -324,27 +324,6 @@ def : Pat<(f32 (fadd (vector_extract (v2f32 FPR64:$Rn), (i64 0)),
                      (vector_extract (v2f32 FPR64:$Rn), (i64 1)))),
            (f32 (FADDPv2i32p (v2f32 FPR64:$Rn)))>;
 
-let Predicates = [HasNEON] in {
-  def : Pat<(v2f64 (sint_to_fp v2i32:$src)),
-            (SCVTFv2f64 (SSHLLv2i32_shift V64:$src, 0))>;
-  def : Pat<(v2f64 (uint_to_fp v2i32:$src)),
-            (UCVTFv2f64 (USHLLv2i32_shift V64:$src, 0))>;
-  def : Pat<(v2f32 (sint_to_fp v2i64:$src)),
-            (FCVTNv2i32 (SCVTFv2f64 V128:$src))>;
-  def : Pat<(v2f32 (uint_to_fp v2i64:$src)),
-            (FCVTNv2i32 (UCVTFv2f64 V128:$src))>;
-
-  def : Pat<(v2i64 (fp_to_sint v2f32:$src)),
-            (FCVTZSv2f64 (FCVTLv2i32 V64:$src))>;
-  def : Pat<(v2i64 (fp_to_uint v2f32:$src)),
-            (FCVTZUv2f64 (FCVTLv2i32 V64:$src))>;
-  def : Pat<(v2i32 (fp_to_sint v2f64:$src)),
-            (XTNv2i32 (FCVTZSv2f64 V128:$src))>;
-  def : Pat<(v2i32 (fp_to_uint v2f64:$src)),
-            (XTNv2i32 (FCVTZUv2f64 V128:$src))>;
-
-}
-
 let Predicates = [HasNoLSE] in {
 def : Pat<(atomic_cmp_swap_i8 GPR64:$addr, GPR32:$desired, GPR32:$new),
           (CMP_SWAP_8 GPR64:$addr, GPR32:$desired, GPR32:$new)>;