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1a27f048ad
Given a carefully constructed input, writebarrier would split a block with the OpAddr in the first half and the VarDef in the second half which ultimately leads to a compiler crash because the scheduler is no longer able to put them in the proper order. To fix, recognize the implicit dependence of OpAddr on the VarDef of the same symbol if any exists. This fix was chosen over making OpAddr take a memory operand to make the dependence explicit, because this change is less invasive at this late part of the 1.11 release cycle. Fixes #26105. Change-Id: I9b65460673af3af41740ef877d2fca91acd336bc Reviewed-on: https://go-review.googlesource.com/121436 Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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