perf[gpu]: reduce register pressure in dyn dispatch #60

Job	Run time
Python (wheel build)	2m 22s
Rust publish dry-run	41s
check-java-publish-build (aarch64-unknown-linux-gnu, runs-on=24523829988/runner=arm64-medium/imag...	51s
check-java-publish-build (x86_64-unknown-linux-gnu, runs-on=24523829988/runner=amd64-medium/image...	44s
Compat check / compat-test	3m 8s
	7m 46s

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