[ptr-compr] Generate TaggedEqual as Word32Equal of compressed values
... in both CSA code and TurboFan. This is a prerequisite for smi-corrupting decompression. The decompression eliminator changes is a workaround to ensure that the result of comparisons of two constant Smis is still a constexpr (the failing test is cctest/test-torque/TestLoadEliminationFixed). Better optimizations will be landed in a follow-up CLs. Bug: v8:9706 Change-Id: Ie2d90f6a7714aa749439e3f457d90d663d0efe49 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1815133Reviewed-by:Santiago Aboy Solanes <solanes@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Commit-Queue: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/master@{#63991}
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