a19cf510af
Currently, "x &^ y" gets rewriten into "x & ^y" during walk. It adds unnecessary complexity to other parts, which must aware about this. Instead, we can just implement "&^" in the conversion to SSA, so "&^" can be handled like other binary operators. However, this CL does not pass toolstash-check. It seems that implements "&^" in the conversion to SSA causes registers allocation change. With the parent: obj: 00212 (.../src/runtime/complex.go:47) MOVQ X0, AX obj: 00213 (.../src/runtime/complex.go:47) BTRQ $63, AX obj: 00214 (.../src/runtime/complex.go:47) MOVQ "".n(SP), CX obj: 00215 (.../src/runtime/complex.go:47) MOVQ $-9223372036854775808, DX obj: 00216 (.../src/runtime/complex.go:47) ANDQ DX, CX obj: 00217 (.../src/runtime/complex.go:47) ORQ AX, CX With this CL: obj: 00212 (.../src/runtime/complex.go:47) MOVQ X0, AX obj: 00213 (.../src/runtime/complex.go:47) BTRQ $63, AX obj: 00214 (.../src/runtime/complex.go:47) MOVQ $-9223372036854775808, CX obj: 00215 (.../src/runtime/complex.go:47) MOVQ "".n(SP), DX obj: 00216 (.../src/runtime/complex.go:47) ANDQ CX, DX obj: 00217 (.../src/runtime/complex.go:47) ORQ AX, DX Change-Id: I80acf8496a91be4804fb7ef3df04c19baae2754c Reviewed-on: https://go-review.googlesource.com/c/go/+/264660 Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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