cmd/compile: internal compiler error: cannot represent parameters of type struct ... [1.26 backport]

[gopherbot]

@randall77 requested issue #77635 to be considered for backport to the next 1.26 minor release.

@gopherbot Please open a backport issue for 1.26.

This causes an ICE when compiling certain zero-sized variables.

[gopherbot]

Change https://go.dev/cl/749063 mentions this issue: [release-branch.go1.26] cmd/compile: handle zero-sized values more generally

[gopherbot]

Change https://go.dev/cl/749064 mentions this issue: [release-branch.go1.26] cmd/compile: treat all zero-sized values as SSA-able

[randall77]

This will also need the fix for #77815 as part of the backport.

[gopherbot]

Change https://go.dev/cl/750823 mentions this issue: [release-branch.go1.26] cmd/compile: fix internal compiler error: bad write barrier type

[randall77]

That last CL is the backport from 77815.