In the ppc64 ISA DS form loads and stores are restricted to offset fields that are a multiple of 4. This is currently handled with checks in the rules that generate MOVDload, MOVWload, MOVDstore and MOVDstorezero to prevent invalid instructions from getting to the assembler. An unhandled case was discovered which led to the search for a better solution to this problem. Now, instead of checking the offset in the rules, this will be detected when processing these Ops in ssaGenValues in ppc64/ssa.go. If the offset is not valid, the address of the symbol to be loaded or stored will be computed using the base register + offset, and that value used in the new base register. With the full address in the base register, the offset field can be zero in the instruction. Updates #44739 Change-Id: I4f3c0c469ae70a63e3add295c9b55ea0e30ef9b3 Reviewed-on: https://go-review.googlesource.com/c/go/+/299789 Trust: Lynn Boger <laboger@linux.vnet.ibm.com> Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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README.md
The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
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