[jdk17u-dev] RFR: 8282528: AArch64: Incorrect replicate2L_zero rule

[Goetz Lindenmaier]

On Mon, 22 Aug 2022 07:53:45 GMT, Yi-Fan Tsai <duke at openjdk.org> wrote:

> Another commit 9d3379b9755e9739f0b8f5c29deb1d28d0f3aa81, "8267356: AArch64: Vector API SVE codegen support", adds "UseSVE == 0" to all predicates expanded from replicate$3$4$5, but it is not backported. It causes this backport not clean.
> 
> This backport instead preserves the predicate in replicate$3$4$5 prior to commit 9d3379 and preserves one more argument in the invocations.
> 
> The predicates are expanded from replicate$3$4$5 by m4 and verified as unmodified.

Hi,
are you sure tier1 is sufficient for such a big change to C2?  Did you run the enclosed test? Does it fail on 17 without the fix?

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PR: https://git.openjdk.org/jdk17u-dev/pull/642