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cmd/asm: ppc64x branch instructions recognize CR0 but not CR1-7 #17408

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laboger opened this issue Oct 11, 2016 · 1 comment
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cmd/asm: ppc64x branch instructions recognize CR0 but not CR1-7 #17408

laboger opened this issue Oct 11, 2016 · 1 comment
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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Go1.8

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@laboger
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laboger commented Oct 11, 2016

Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

tip

What operating system and processor architecture are you using (go env)?

Ubuntu 16.04

What did you do?

Tried to use go asm for ppc64x with a branch instruction based on a CR other than CR0.

What did you expect to see?

Correct generated code.

What did you see instead?

Incorrect generated code. The following is an example of an instruction that is accepted by the golang assembler without error but the generated ppc64x instruction encodes CR0 instead of CR2.

BNE CR2,label

Other instructions like CMP which can set the CR will correctly accept other CRs and generate the correct ppc64x asm for them, e.g. CMP R2, R3, CR4.
@quentinmit quentinmit added this to the Go1.8 milestone Oct 11, 2016
@quentinmit quentinmit added the NeedsFix The path to resolution is known, but the work has not been done. label Oct 11, 2016
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CL https://golang.org/cl/30930 mentions this issue.

@golang golang locked and limited conversation to collaborators Oct 12, 2017
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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Go1.8
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