Cranelift: sret argument without use causes bad SSA to be passed to regalloc #8659
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Description
As reported by @bjorn3 just now, we get a compilation panic with the following:
test compile precise-output
target aarch64
function u0:11(i64 sret) system_v {
block0(v0: i64):
nop
jump block1
block1:
nop
@0001 return
}
This was bisected just now to #8438 (first failing in 3befbe5). @jameysharp, could you take a look? We should backport and do a point-release on the just-released Cranelift as well as @bjorn3 discovered this while trying to upgrade.
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