[compiler-rt] [AArch64][SME] Rewrite __arm_sc_memset to remove invalid instruction (PR #101522)

[Kerry McLaughlin via llvm-commits]

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@@ -252,7 +252,15 @@ DEFINE_COMPILERRT_FUNCTION_ALIAS(__arm_sc_memmove, __arm_sc_memcpy)
 #define zva_val  x5
 
 DEFINE_COMPILERRT_OUTLINE_FUNCTION_UNMANGLED(__arm_sc_memset)
-        dup     v0.16B, valw
+#  ifdef __ARM_FEATURE_SVE
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kmclaughlin-arm wrote:

There was no real reason for the spaces, I'll remove them before merging.

https://github.com/llvm/llvm-project/pull/101522