)]}'
{
  "commit": "f84dfd8305963f124c624570bb6eb0c84149f67a",
  "tree": "e97f4122e3db0bd57e6df3fa38cfcafe60695bfd",
  "parents": [
    "0b9e5f95108c44a57b3713329af35fdd04a5e744"
  ],
  "author": {
    "name": "Georg-Johann Lay",
    "email": "avr@gjlay.de",
    "time": "Fri Jul 03 17:30:04 2026 +0200"
  },
  "committer": {
    "name": "Georg-Johann Lay",
    "email": "avr@gjlay.de",
    "time": "Fri Jul 03 19:24:53 2026 +0200"
  },
  "message": "AVR: Adding +/-1 to a lower reg doesn\u0027t need a scratch.\n\nAdding +/-1 to a lower register can be performed by sequences like\n   sec\n   adc r14, __zero_reg__\n   adc r15, __zero_reg__\nresp.\n   sec\n   sbc r14, __zero_reg__\n   sbc r15, __zero_reg__\nthat don\u0027t need a scratch reg.  The code size is unchanged but\nthe register pressure goes down.\n\ngcc/\n\t* config/avr/avr.cc (avr_out_plus_1): Handle +/-1 on the\n\tlower regs without needing a scratch.\n\t* config/avr/avr.md (add\u003cmode\u003e3_clobber, *add\u003cmode\u003e3_clobber)\n\t(add\u003cmode\u003e3, *add\u003cmode\u003e3, addpsi3, *addpsi3): Add constraint\n\talternative \"Y01 Ym1\" for +/-1 without scratch.\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "ebc3def80df0adb0d34ff1ead928ca92f2f839bf",
      "old_mode": 33188,
      "old_path": "gcc/config/avr/avr.cc",
      "new_id": "cdf676ca312ff7a63c51a1ba49ea517479237fa7",
      "new_mode": 33188,
      "new_path": "gcc/config/avr/avr.cc"
    },
    {
      "type": "modify",
      "old_id": "57d63a8f7463740de9c8fc2af63c9bf396f54680",
      "old_mode": 33188,
      "old_path": "gcc/config/avr/avr.md",
      "new_id": "f57df70db930199142d1d137b51554e5665f6caf",
      "new_mode": 33188,
      "new_path": "gcc/config/avr/avr.md"
    }
  ]
}