8350931: RISC-V: remove unnecessary src register for fp_sqrt_d/f

[Hamlin-Li]

Hi,
Can you review this simple patch?
It remove the unnecessary src register for fp_sqrt_d/f pipe_class, as sqrt has only one src register.
Thanks

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Issue

• JDK-8350931: RISC-V: remove unnecessary src register for fp_sqrt_d/f (Enhancement - P4)

Reviewers

• Fei Yang (@RealFYang - Reviewer)

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@Hamlin-Li This change now passes all automated pre-integration checks.

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After integration, the commit message for the final commit will be:

8350931: RISC-V: remove unnecessary src register for fp_sqrt_d/f

Reviewed-by: fyang

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At the time when this comment was updated there had been 83 new commits pushed to the master branch:

• ac76d8d: 8350824: New async logging gtest StallingModePreventsDroppedMessages fails
• eada1ea: 8350855: RISC-V: print offset by assert of patch_offset_in_conditional_branch
• 2af76de: 8350683: Non-C2 / minimal JVM crashes in the build on ppc64 platforms
• ab4b0ef: 8350889: GenShen: Break out of infinite loop of old GC cycles
• 0a4c5a8: 8347804: GenShen: Crash with small GCCardSizeInBytes and small Java heap
• f1398ec: 8350701: [JMH] test foreign.AllocFromSliceTest failed with Exception for size>1024
• 3ae80bf: 8349766: GenShen: Bad progress after degen does not always need full gc
• 2fd7156: 8347426: Invalid value used for enum Cell in iTypeFlow::StateVector::meet_exception
• 939815f: 8347040: C2: assert(!loop->_body.contains(in)) failed
• 8323ddf: 8346659: SnippetTaglet should report an error if provided ambiguous links
• ... and 73 more: https://git.openjdk.org/jdk/compare/dfcd0df60c60cf89dc01682264a573ad39e61a17...master

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