43 lines
1.3 KiB
Rust
43 lines
1.3 KiB
Rust
use crate::cdsl::regs::{IsaRegs, IsaRegsBuilder, RegBankBuilder, RegClassBuilder};
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pub fn define() -> IsaRegs {
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let mut regs = IsaRegsBuilder::new();
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let builder = RegBankBuilder::new("IntRegs", "r")
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.units(16)
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.names(vec!["rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi"])
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.track_pressure(true);
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let int_regs = regs.add_bank(builder);
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let builder = RegBankBuilder::new("FloatRegs", "xmm")
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.units(16)
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.track_pressure(true);
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let float_regs = regs.add_bank(builder);
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let builder = RegBankBuilder::new("FlagRegs", "")
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.units(1)
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.names(vec!["rflags"])
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.track_pressure(false);
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let flag_reg = regs.add_bank(builder);
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let builder = RegClassBuilder::new_toplevel("GPR", int_regs);
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let gpr = regs.add_class(builder);
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let builder = RegClassBuilder::new_toplevel("FPR", float_regs);
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let fpr = regs.add_class(builder);
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let builder = RegClassBuilder::new_toplevel("FLAG", flag_reg);
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regs.add_class(builder);
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let builder = RegClassBuilder::subclass_of("GPR8", gpr, 0, 8);
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let gpr8 = regs.add_class(builder);
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let builder = RegClassBuilder::subclass_of("ABCD", gpr8, 0, 4);
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regs.add_class(builder);
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let builder = RegClassBuilder::subclass_of("FPR8", fpr, 0, 8);
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regs.add_class(builder);
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regs.finish()
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}
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