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cranelift: port sshr to ISLE on x64 #3681

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merged 1 commit into from
Jan 12, 2022

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@fitzgen fitzgen commented Jan 11, 2022

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@github-actions github-actions bot added cranelift Issues related to the Cranelift code generator cranelift:area:machinst Issues related to instruction selection and the new MachInst backend. cranelift:area:aarch64 Issues related to AArch64 backend. cranelift:area:x64 Issues related to x64 codegen isle Related to the ISLE domain-specific language labels Jan 11, 2022
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cc @cfallin, @fitzgen

This issue or pull request has been labeled: "cranelift", "cranelift:area:aarch64", "cranelift:area:machinst", "cranelift:area:x64", "isle"

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fitzgen commented Jan 11, 2022

Okay I fixed the masking of imm8s here and elsewhere we were accidentally doing that as well.

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; Inst 9: movdqa %xmm1, %xmm0
; Inst 10: movq %rbp, %rsp
; Inst 11: popq %rbp
; Inst 12: ret
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Managed to get it down to 12 instructions, instead of 13. Still one additional move compared to before. meh.

@alexcrichton alexcrichton merged commit 7454f1f into bytecodealliance:main Jan 12, 2022
@fitzgen fitzgen deleted the port-sshr-to-isle branch January 12, 2022 18:11
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cranelift:area:aarch64 Issues related to AArch64 backend. cranelift:area:machinst Issues related to instruction selection and the new MachInst backend. cranelift:area:x64 Issues related to x64 codegen cranelift Issues related to the Cranelift code generator isle Related to the ISLE domain-specific language
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