llvm-project

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[CodeGen] Remove unused first operand of SUBREG_TO_REG (#179690 )

The first input operand of SUBREG_TO_REG was an immediate that most
targets set to 0. In practice it had no effect on codegen. Remove it.

2026-02-04 17:35:21 +00:00

accept-nonlive-reg-phis.mir

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dbg-phi-subregister-location.mir

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dbg-phis-in-ldv2.mir

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dbg-phis-in-ldv.mir

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dbg-phis-merging-in-ldv.mir

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dbg-phis-with-loops.mir

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deref-spills-with-size-too-big.mir

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deref-spills-with-size.mir

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follow-spill-of-indir-value.mir

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follow-spill-of-live-value.mir

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instr-ref-roundtrip.mir

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lit.local.cfg

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livedebugvalues_illegal_locs.mir

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livedebugvalues_instrref_tolocs.mir

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livedebugvalues_recover_clobbers.mir

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livedebugvalues_stackslot_subregs.mir

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livedebugvalues_subreg_substitutions.mir

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livedebugvalues-transfer-variadic-instr-ref.mir

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memory-operand-folding-tieddef.mir

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memory-operand-folding.mir

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memory-operand-load-folding.mir

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memory-operand-tracking.mir

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no-duplicates.mir

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no-metainstrs.mir

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out-of-scope-blocks.mir

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phi-coalesce-subreg.mir

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phi-coalescing.mir

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phi-on-stack-coalesced2.mir

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phi-on-stack-coalesced.mir

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phi-regallocd-to-stack.mir

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phi-through-regalloc.mir

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pick-vphi-in-shifting-loop.mir

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pretty-print.mir

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restore-clobber-with-indirectness.mir

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restore-to-rsp-crash.mir

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single-assign-propagation.mir

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spill-slot-limits.mir

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stack-coloring-dbg-phi.mir

[CodeGen] Remove unused first operand of SUBREG_TO_REG (#179690 )

2026-02-04 17:35:21 +00:00

substitusions-roundtrip.mir

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survives-livedebugvars.mir

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twoaddr-to-threeaddr-sub.mir

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win32-chkctk-modifies-esp.mir

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x86-cmov-converter.mir

[CodeGen] Remove unused first operand of SUBREG_TO_REG (#179690 )

2026-02-04 17:35:21 +00:00

x86-drop-compare-inst.mir

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x86-fixup-bw-inst-subreb.mir

[X86][NewPM] Port x86-fixup-bw-insts to NPM (#175399 )

2026-01-11 10:41:21 -08:00

x86-fp-stackifier-drop-locations.mir

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x86-lea-fixup-2.mir

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x86-lea-fixup.mir

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