[compiler-rt] [compiler-rt][ARM] Optimized mulsf3 and divsf3 (PR #161546)

[via llvm-commits]

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@@ -422,6 +422,22 @@ set(arm_or_thumb2_base_SOURCES
   ${GENERIC_SOURCES}
 )
 
+option(COMPILER_RT_ARM_OPTIMIZED_FP
+  "On 32-bit Arm, use optimized assembly implementations of FP arithmetic" ON)
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aykevl wrote:

I believe this is a code size vs speed tradeoff, right?
I think it would be a good idea to say that explicitly. (And IMHO if the new assembly routines are both smaller and faster they should just be replaced instead of having two options).

https://github.com/llvm/llvm-project/pull/161546