[AArch64][SVE] Remove unused FP reduction intrinsic definitions

[c-rhodes]

Summary

FP reductions no longer use these intrinsics since D78723.

[sdesmalen]

LGTM

Can you add D78723 as a parent revision?

[efriedma]

I was thinking more along the lines of "land the entire IntrinsicsAArch64.td separately", not just deleting the dead intrinsic patterns. Maybe there's something I'm missing?

[c-rhodes]

In D79010#2008907, @efriedma wrote:

I was thinking more along the lines of "land the entire IntrinsicsAArch64.td separately", not just deleting the dead intrinsic patterns. Maybe there's something I'm missing?

I thought you might have meant that, sorry I should have clarified. To be honest I'm struggling to find a reason for committing the IntrinsicsAArch64.td changes separately, am I missing something?

[c-rhodes]

Changes:
Moved the remaining IntrinsicsAArch64.td changes from D78723 to this patch.

[efriedma]

LGTM

It makes review harder when I have to read a patch and spend extra time to figure out whether something that looks like an NFC change at first glance is actually supposed to be one.

[c-rhodes]

In D79010#2010679, @efriedma wrote:

LGTM

It makes review harder when I have to read a patch and spend extra time to figure out whether something that looks like an NFC change at first glance is actually supposed to be one.

No worries, thanks for reviewing!

llvm/include/llvm/IR/IntrinsicsAArch64.td

let TargetPrefix = "aarch64" in {  // All intrinsics start with "llvm.aarch64.".
 
   class AdvSIMD_SVE_CNT_Intrinsic
     : Intrinsic<[LLVMVectorOfBitcastsToInt<0>],
                 [LLVMVectorOfBitcastsToInt<0>,
                  LLVMScalarOrSameVectorWidth<0, llvm_i1_ty>,
                  llvm_anyvector_ty],
                 [IntrNoMem]>;
 
-  class AdvSIMD_SVE_FP_Reduce_Intrinsic
-    : Intrinsic<[llvm_anyfloat_ty],
-                [LLVMScalarOrSameVectorWidth<1, llvm_i1_ty>,
-                 llvm_anyvector_ty],
-                [IntrNoMem]>;
-
   class AdvSIMD_SVE_ReduceWithInit_Intrinsic
     : Intrinsic<[LLVMVectorElementType<0>],
                 [LLVMScalarOrSameVectorWidth<0, llvm_i1_ty>,
                  LLVMVectorElementType<0>,
                  llvm_anyvector_ty],
                 [IntrNoMem]>;
 
-  class AdvSIMD_SVE_FP_ReduceWithInit_Intrinsic
-    : Intrinsic<[llvm_anyfloat_ty],
-                [LLVMScalarOrSameVectorWidth<1, llvm_i1_ty>,
-                 LLVMMatchType<0>,
-                 llvm_anyvector_ty],
-                [IntrNoMem]>;
-
   class AdvSIMD_SVE_ShiftByImm_Intrinsic
     : Intrinsic<[llvm_anyvector_ty],
                 [LLVMScalarOrSameVectorWidth<0, llvm_i1_ty>,
                  LLVMMatchType<0>,
                  llvm_i32_ty],
                 [IntrNoMem, ImmArg<2>]>;
 
   class AdvSIMD_SVE_ShiftWide_Intrinsic