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cmd/compile: allow 128-bit values to be spilled

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We sometimes use 16-byte load+store to move values around in memory.
In rare circumstances, the loaded value must be spilled because the
store can't happen yet.

In that case, we need to be able to spill the 16-byte value.

Fixes #53454

Change-Id: I09fd08e11a63c6ba3ef781d3f5ede237e9b0132e
Reviewed-on: https://go-review.googlesource.com/c/go/+/413294
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
This commit is contained in:
Keith Randall 2022-06-20 17:06:09 -07:00 • committed by Keith Randall
parent 19ed442807
commit c2d373d5d1
5 changed files with 107 additions and 0 deletions
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5
src/cmd/compile/internal/dwarfgen/dwarf.go
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@ -91,6 +91,11 @@ func Info(fnsym *obj.LSym, infosym *obj.LSym, curfn interface{}) ([]dwarf.Scope,
continue
}
apdecls = append(apdecls, n)
if n.Type().Kind() == types.TSSA {
// Can happen for TypeInt128 types. This only happens for
// spill locations, so not a huge deal.
continue
}
fnsym.Func().RecordAutoType(reflectdata.TypeLinksym(n.Type()))
}
}