[compiler-rt] [libunwind] [AArch64] Fix nofp regressions in compiler-rt and libunwind (PR #111235)

[Keith Packard via cfe-commits]

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@@ -238,6 +236,7 @@ END_COMPILERRT_OUTLINE_FUNCTION(__arm_sc_memcpy)
 
 DEFINE_COMPILERRT_FUNCTION_ALIAS(__arm_sc_memmove, __arm_sc_memcpy)
 
+#if defined(__aarch64__) && __ARM_FP != 0
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keith-packard wrote:

Good plan. I've stuck a comment in both .c and .S files about why this function is implemented in both files.

https://github.com/llvm/llvm-project/pull/111235