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CC cleanups and optimization #570

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Merged
jgarzik merged 18 commits into from
Mar 23, 2026
Merged

CC cleanups and optimization #570

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5792b0d
cc: add hwmap pass — centralized target-specific IR lowering
jgarzik Mar 22, 2026
8303d8b
cc: add --dump-ir=<stage> and Float16 integration test
jgarzik Mar 22, 2026
1dc2b7e
cc: migrate Float16 soft-float from linearizer to hwmap
jgarzik Mar 22, 2026
2fa9462
cc: move complex mul/div rtlib name selection to hwmap
jgarzik Mar 22, 2026
46b3b26
cc: add 8 int128 decomposition opcodes + hwmap expansions
jgarzik Mar 22, 2026
a7ae7f9
cc: show src_size in IR Display for conversion ops
jgarzik Mar 22, 2026
a921630
cc: remove ~1200 lines of duplicated int128 backend code
jgarzik Mar 22, 2026
05468f1
cc: address hwmap code review findings
jgarzik Mar 23, 2026
3c9a8c8
cc: refactor hwmap into arch-specific mapping pass
jgarzik Mar 23, 2026
28c8fbf
cc: redesign IR pass interface, migrate shifts + Float16 to mapping pass
jgarzik Mar 23, 2026
2fb14de
cc: panic on unexpected int128 binop in x86_64 backend
jgarzik Mar 23, 2026
541f92c
cc: replace lexer char_class() match with compile-time 256-byte looku…
jgarzik Mar 23, 2026
be14929
cc: add pre-interned keyword system with tag-based O(1) classification
jgarzik Mar 23, 2026
2b596f1
cc: fix kw.rs warnings — use anonymous entries for tag-only keywords
jgarzik Mar 23, 2026
2b6a81d
cc: promote keyword ID assertions from debug_assert to assert
jgarzik Mar 23, 2026
4f4f46d
cc: fix potential panic in eval_has_builtin on empty macro args
jgarzik Mar 23, 2026
45ae13c
cc: add test ensuring SUPPORTED_BUILTINS and kw BUILTIN tags stay in …
jgarzik Mar 23, 2026
3e16b3d
cc: fix aarch64 float16 conversion using fmov instead of fcvt
jgarzik Mar 23, 2026
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10 changes: 10 additions & 0 deletions cc/arch/aarch64/codegen.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1745,6 +1745,16 @@ impl Aarch64CodeGen {
self.emit_fence(insn);
}

// Int128 decomposition ops (from mapping pass expansion)
Opcode::Lo64 => self.emit_lo64(insn),
Opcode::Hi64 => self.emit_hi64(insn),
Opcode::Pair64 => self.emit_pair64(insn),
Opcode::AddC => self.emit_addc(insn, false),
Opcode::AdcC => self.emit_addc(insn, true),
Opcode::SubC => self.emit_subc(insn, false),
Opcode::SbcC => self.emit_subc(insn, true),
Opcode::UMulHi => self.emit_umulhi(insn),

// Skip no-ops and unimplemented
_ => {}
}
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