2 commits

Author	SHA1	Message	Date
Keith Randall	4c800f03c9	cmd/compile: fix large load/store offsets on 386 ... Pointer arithemetic is done mod 2^32 on 386, so we can just drop the high bits of any large constant offsets. The bounds check will make sure wraparounds are never observed. Fixes #21655 Change-Id: I68ae5bbea9f02c73968ea2b21ca017e5ecb89223 Reviewed-on: https://go-review.googlesource.com/82675 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>	2017-12-08 03:53:18 +00:00
Keith Randall	053840dc00	cmd/compile: avoid generating large offsets ... The assembler barfs on large offsets. Make sure that all the instructions that need to have their offsets in an int32 1) check on any rule that computes offsets for such instructions 2) change their aux fields so the check builder checks it. The assembler also silently misassembled offsets between 1<<31 and 1<<32. Add a check in the assembler to barf on those as well. Fixes #21655 Change-Id: Iebf24bf10f9f37b3ea819ceb7d588251c0f46d7d Reviewed-on: https://go-review.googlesource.com/59630 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>	2017-08-28 22:02:59 +00:00