[compiler-rt] [llvm] [clang] [AArch64][SME] Add support for sme-fa64 (PR #70809)

[Matthew Devereau via cfe-commits]

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@@ -491,13 +491,13 @@ bool AArch64Subtarget::isStreamingCompatible() const {
 }
 
 bool AArch64Subtarget::isNeonAvailable() const {
-  return hasNEON() && !isStreaming() && !isStreamingCompatible();
+  return (hasNEON() || hasSMEFA64()) && !isStreaming() &&
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MDevereau wrote:

I've added the file [sve-streaming-mode-fixed-length-fp-reduce-fa64.ll](https://github.com/llvm/llvm-project/pull/70809/commits/9d2078b903a9ae8d54cdf5e34b4d88a10c0d372e#diff-cdcb53699f7848dacb5e12e4c40f2418be9ef30428b5308016f91b3bfe224d1a)

https://github.com/llvm/llvm-project/pull/70809