gh-146306: Optimize float operations by mutating uniquely-referenced operands in place (JIT only) #2473

Job	Run time
aarch64-apple-darwin/clang	9m 5s
aarch64-unknown-linux-gnu/gcc	7m 24s
x86_64-unknown-linux-gnu/gcc	9m 52s
x86_64-unknown-linux-gnu/gcc-free-threading	7m 45s
x86_64-apple-darwin/clang	19m 46s
x86_64-pc-windows-msvc/msvc-free-threading	4m 47s
x86_64-pc-windows-msvc/msvc	10m 43s
	1h 9m 22s

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