[all-commits] [llvm/llvm-project] 1a5938: [Hexagon] Disable new value jumps when packetizer ...

[Brian Cain via All-commits]

  Branch: refs/heads/release/22.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 1a5938e7c87cdf913a0aff72ef3a48dd02625184
      https://github.com/llvm/llvm-project/commit/1a5938e7c87cdf913a0aff72ef3a48dd02625184
  Author: Brian Cain <brian.cain at oss.qualcomm.com>
  Date:   2026-03-05 (Thu, 05 Mar 2026)

  Changed paths:
    M llvm/lib/Target/Hexagon/HexagonNewValueJump.cpp
    M llvm/lib/Target/Hexagon/HexagonVLIWPacketizer.cpp
    A llvm/test/CodeGen/Hexagon/disable-packetizer-nvj.ll

  Log Message:
  -----------
  [Hexagon] Disable new value jumps when packetizer is disabled (#180615)

New value jumps require the feeder instruction to be in the same packet
as the consumer (.new) instruction. When --disable-packetizer is used,
each instruction is placed in its own packet, making it impossible to
satisfy this requirement.

Previously, using --disable-packetizer would cause an assertion failure
in the MCCodeEmitter: "Couldn't find producer". This change fixes the
crash by checking the DisablePacketizer flag in the NewValueJump pass
and skipping NVJ generation when packetization is disabled.

(cherry picked from commit e1be4dfe1ef889c51d7e1704782a31dc65bb745c)



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