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Port icmp to ISLE (AArch64) (#4898)

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* Port `icmp` to ISLE (AArch64)

Ported the existing implementation of `icmp` (and, by extension, the
`lower_icmp` function) to ISLE for AArch64.

Copyright (c) 2022 Arm Limited

* Allow 'producer chains', eliminating `Nop0`s

Copyright (c) 2022 Arm Limited
This commit is contained in:
Damian Heaton
2022-09-13 16:56:50 +01:00
committed by GitHub
parent c3f8415ac7
commit e9b08b856d
11 changed files with 310 additions and 54 deletions
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6
cranelift/codegen/src/isa/aarch64/lower_inst.rs
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@@ -293,11 +293,7 @@ pub(crate) fn lower_insn_to_regs(
panic!("Should never reach ifcmp as isel root!");
}
Opcode::Icmp => {
let condcode = ctx.data(insn).cond_code().unwrap();
let rd = get_output_reg(ctx, outputs[0]).only_reg().unwrap();
lower_icmp(ctx, insn, condcode, IcmpOutput::Register(rd))?;
}
Opcode::Icmp => implemented_in_isle(ctx),
Opcode::Fcmp => implemented_in_isle(ctx),