This reverts commit 0818d13807.
Reason for revert: Rolling back to previous greedy slot allocator.
tbr=ahaas@chromium.org
Original change's description:
> [compiler][wasm] Fix Wasm linkage
>
> - Fixes a problem when constructing Wasm CallDescriptors, where the
> allocation tries to treat parameters and returns as if they are in the
> same frame. This doesn't work when slots may be aligned in their
> frame. Instead, allocate parameters and returns separately and offset
> return slots by the number of parameter slots.
> - Adds argument slot padding in the CallDescriptor lowering case, to
> prepare for when 32 bit targets align stack frames and require
> padding.
> - Adds a regression test.
>
> Bug: chromium:1174500
> Change-Id: I60d96a94b171a0d27ff61cbab35623976b0c6da8
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2683024
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#72588}
Bug: chromium:1174500
Change-Id: I1d1c389acde43bd56e6d2a27e1a3eb8ea4d6073c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2713206
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72934}
9a540436e4