<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/144481>144481</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Don't read from `vpcmpeqd xmm, xmm, xmm` and `vpternlogd zmm, zmm, zmm, 255` simultaneously
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          Validark
      </td>
    </tr>
</table>

<pre>
    I have some assembly like this: ([Zig Godbolt](https://zig.godbo.lt/#z: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%2B3dXp9foDQdoIaYADdVNDYUwscEsQA6WioADuIKYIOHY%2BC5feldVq09tYZFQbmF9IP9gbwwfHne7cL7g4QZgQ45BJ%2BAZ5njzn9MBBBmfwFCFcVCo9Ag5KxqixnqxmyQg8IKAbseDbBcmzUisGhYgAtJEKwXPB2xYtIKxwZCWI4vBlJUrsvKQtgSaWnqnJkjymZOlUroQOqmrasQBK3q8UG7O87y/P8gLAoxUIwiCPa6taBrkgSRKpqJxpQRW9JVsywmSVyYnLlmRZirKmlSrOtJyQuDIahu4LhBJ%2Bq2tJpoHOapEibaGaOs6tF3sqdL1t665Ntuu4dl2MKWtRLrLBA6wDnELDoAO2ioH4EaoFG0yxkw8aJlZyZkWm2L2WpOYQHmDqpTZkmQjhmUOjGWA0P46BlkeKxDqO55TiCN66XSgEPBooHMQqzkqks1bLm5jabs2O6tnuvk9rV9VjhOTU3j1rV9UyS58iuHruRuW4tm2%2B5%2Bb2zLHqe56XteOlKvemCPsQz4KK%2B76ft%2BKy/is/5bEBIGQmBEEyTB8GIchGGoSs6GYdhuH4YRxEFSmZkUfiVGOUF9FGSQ3WKmxHGvFxQ0eSNXnjaoYZwopcOlX2pMklwJWuPahKw%2BRpVUrJdIPk%2BJHtZBX0MxltP5QFtHLMQrjWMzvXKp8BBhH8XEHLctC0O2LADkTOIDlEyC0FuACO6Da7chX6oDYmZulEDG5Rhr2qZJIW/iLEXW1lK7AOctXArSsq2G6uazresG%2BL9IHALQUhWFEVRTFB0w2byn2eVQLDNV%2BaB3SwdIyKM5YhoZbtZ1X0O5jrHY38uNbaN3l7UJNu85bLI11JCMqicNhsIaLAsOiCKMO4KxftbMm9U1c0NcEy4aMEGhTxoILT7BvWnY1o/j5P0%2Bz1PkRDw1E6L2Pa0T9PXDr1PpAL8dO/HXvpoHxvx%2Bb6xzv07H8O8tSvVszdawEMLouD0tEuqClp/WW8tFbK1Vj7LWAZdbawHN2A2PNG75WftyJudon62Rfg7ZUbFXagM9hAjWUDaAwLgTCA2B1%2ByHD8AQcUGoWDYAYO4CAxxO7ow4s7DgkxaCcEhLwTwHAtCkFQJwAAWmYNY0xZiYC2BcbYPBSAEE0FwyYABrEAOILgDnROiC4GgcTFUhJIORxiACcOEeEcEkPw5RwjOC8AUCAWCSjBFcNIHAWASA0AnDoGEcglBvFRF8eEYw38YyqL4HQIBjiIAslcaQJ0zAvScAUYkionoADywRtAohSbwbxbBBAZIYK2WxWBgiuGAC6BWjjuC8CwCwQwwBxDxPwICEo7Z1y2M%2BMUVwUs8nkEEPUWxtA8DBGIOk5wWBbHf2OAMzpxBgixEwLsTAjSjCjKMMoyYH4mDAAUIiPAmARwZKiIwAZ/BBAiDEOwKQMhBCKBUOoeJuhIgGC2aYcwozgiOMgJMOKjRalwQyQAJXqJgc0mBxSugwj0YAV1nphhBHiOCmzXA1jgiwZAURXB8mMAwBZfDhELOIHgLAvyICTCKCUOwEAHB9FqLBHwwwch5FSLEeIAgGUSFgmkTlDA2isrGBYcFNKmiDG5VwWC1LGjNEqIKjo%2BRugtEldKwYCrRj5CpVIuYEhuG8JsfEkRHAVifJWGEhgqi%2B64EICQWR8jxi8BcVofM6jtiUgHAUSkpjtiSF9ZCSkBjKTIUsdY0gLAQCmNMQOKNsa43xtIAIoRxqHFOMUds/VHALiGuTfY9Nrj8wLLiHYSQQA%3D%3D%3D) [LLVM Godbolt](https://llvm.godbo.lt/#z:OYLghAFBqd5QCxAYwPYBMCmBRdBLAF1QCcAaPECAMzwBtMA7AQwFtMQByARg9KtQYEAysib0QXACx8BBAKoBnTAAUAHpwAMvAFYTStJg1C1aANxakl9ZATwDKjdAGFUtAK4sGexwBk8DTAA5DwAjTGIQACZpAAdUBUI7Bhd3Tz04hNsBPwDgljCI6MtMayyGIQImYgIUjy8uYtKkiqqCHKDQ8KjpBUrq2rSG3tb2vILugEpLVDdiZHYOLBoAgGp0BVQAfVpUUVoVgFIAZicADhXVFbwANklj7BWAARjiTBpVTdUSTYBWLkiIMczhcrrd7odIj8NBMVjs9ps3AxmGx0JsmOh0MRDgB2ABCBw0AEFsIJiABPEAEwkrCF/Q5HAAiK0qdBWe32xEMwEwEBukhWGlIK2uPxhQPOlz54MeJnMADobHEYnLTKc%2BYCThLQXcjg8DpDoVSafqfpF6UyCMREcgVgw3AB3W0KR3ikFS3W0rjM1D04GS073I20o7mlYhQiiXq%2BrV4AMek1moi%2Br2SsG6oMm/nHJmGdDJt1pvWQo5ChQxAwEFa824rbGRI6SDRcOunI6nDTY67XbFHCYZyE/UMKBBuKhUeimTA2Ej51M6os/aSz7XguJ4DYMIVAs2So6RcFAvB7gVCo9mtcbwNE42Q66hln7dm%2Bncrj0yswsOWqU7XOUxZC0Cwbi0AAjugIEak4L7uguPxbic0GFr6fIrAAtA02orBeAj3Ke5wJMAASqJWhrXrScoKMQqBMHKGi0SqU5ypgxGcjYcp4KGzGWkwNglJgbCCM%2BBbzrS1ynjWGj9j82KhuGBCRpWKEmhRVE0XRdGTsgTEsTxBDsd60ZunG2BSec2YrEoxGGf6B6QjJSaunOV7UrSACc95MKyT6Oa%2BDzvvK36/v%2BgHAWBIFyn8AI%2BTBtKCtZvnITW6Hify2GbphyWYWlKVoRhKHZRleU1mluFXPheCEVxAp9mRJpcBoHleWI%2BzRUh/mfoFf4AUBoHgRF/yQTGSEmnFrUiYexWoOuAg5Zl%2BVTRus1FalC0zYVOUFSh6GlbGFkVURlbNjVLl1V65nDqO46YJpRBYmNtk/K58F%2BgldWjZqbp7geJxnieVzHqcp7HpEQNmvVoMrEuv3/BDYn/WD85Sf8oZfHdH1OfGkJcBhJoBmRryVvdmORVSBzYgypNElgAFVJg8Uxe1CoEEqKpqrcg3CfcYr1lwlOEtTBivEJGN%2BbKHU/l1IW9RB26c7qz2IfOeFXCwLBVMA3NfUSVIC7T9NtWLX4S8FPVhf1UXo75z1DUrZUq2rxAaxCWuEhwUy0JwPy8F4HBaKQqCcD4PgAGoALIrAAkgAShZMxzHT%2BpHDwpAEJobtTAA1iAUL6Jwkje2n/ucLwCggIKqe%2B27pBwLASBoCwMR0OE5CUPXjf0BEJg2FaDAZ3wdAEOEpcQCEhfhsw5KcMn49VGSADyITaFOFfJ/XAkEHPDC0BSlekFgIRuMATjNaX3C8FgatGOIu/4K8Nh4JOp9%2B8xU5uIPU%2B8P4g8e7vtB4CEnJyQuCwIXS0eAWAf1IJOYgIR4iYAZPxLkf8jBpymOOJgwAFDBzwJge0c8YiMEgfwQQIgxDsCkDIQQigVDqF3roBoBgUFi30P/UukApioBiGUU%2BqFUIsGQDENw2YABeDBoFe39tA4geAsBsIgFMKwy8kgOAYM4VwdRvCqNGJ0CIDQMiJAEAMeopB9FlG0fkLoQw%2BL3wEC0fo6jBiNCUbYvobR/AdAsboywrijF6GGNUcx4wuAKLjvMCQ7tPYF13gHDgsJaA2ggJaREGcYQQFwIQGcidgm8ArloCYmds6Ch/vnUgPs/YxJLmXFOqCIkcEiFE8pxdqmV3yVAoeyjJBAA%3D%3D%3D))

```asm
.LCPI0_0:
 .quad   72340172838076673
prefix_xor_512:
        vpopcntq zmm1, zmm0
        vpcmpeqd        xmm2, xmm2, xmm2
        vpmovqb xmm1, zmm1
        vpandq  xmm1, xmm1, qword ptr [rip + .LCPI0_0]{1to2}
 vpclmulqdq      xmm1, xmm1, xmm2, 0
        vpternlogd      zmm2, zmm2, zmm2, 255
        vpclmulqdq      zmm3, zmm0, zmm2, 0
        vpclmulqdq zmm0, zmm0, zmm2, 17
        vpmovsxbq       zmm1, xmm1
 vpunpcklqdq     zmm0, zmm3, zmm0
        vpxorq  zmm0, zmm0, zmm1
 ret
```

Should be:

```diff
.LCPI0_0:
        .quad 72340172838076673
prefix_xor_512:
        vpopcntq        zmm1, zmm0
- vpcmpeqd        xmm2, xmm2, xmm2
+       vpternlogd      zmm2, zmm2, zmm2, 255
        vpmovqb xmm1, zmm1
        vpandq  xmm1, xmm1, qword ptr [rip + .LCPI0_0]{1to2}
        vpclmulqdq      xmm1, xmm1, xmm2, 0
- vpternlogd      zmm2, zmm2, zmm2, 255
        vpclmulqdq      zmm3, zmm0, zmm2, 0
        vpclmulqdq      zmm0, zmm0, zmm2, 17
        vpmovsxbq zmm1, xmm1
        vpunpcklqdq     zmm0, zmm3, zmm0
        vpxorq  zmm0, zmm0, zmm1
        ret
```
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJzEWFmvo7qW_jWpl61TAgKEPNSDDWYmBAgQ8nLFFDPPBMivbyV7n-qq06evrrpbfRHKir1m-8OsRTiOOW7S9MeOgTtG-BbOU9YOP7ywypNwKL9FbbL9UD6y8JF-jG2dfoTjmNZRtX1UeZl-TFk-7vbgY0dxOwbecvwhtUnUVtOOEXYUl01T9-LvKHFHic8cf8cv9vdqes_sn7s9MAMdZ0CEfcJY_AqC5RxAg6-hnUAdiKTFxyA8Ix4YzwVOBjgAaxEnw4IbsPFRm6wAgW3MI8K6An7lIARaC5sLAC6QuwUYDyAGF2dSMQnA42yIqs5uoMGSJ7HA0LoQeGtgHAUsqLRUA6HaA_5kBLicXQxkD3i8v9ya08IdJT2PgHfcUaKi3ixOY5SNWAeoIV6tFV49J2drXAZBCba8VcZF5ZdcmbZt7t2lO_iPfRQ_Ww04eHI9Si0TTBMQuzyQuuoIfeBiWAOIPAwQJ2aFliMKqPhBbvRjbQKQXQICWH56fYrehQxbSQyLXMWh1oJz3yOMMT9ewYz4QEEmELy8tHMIANxKMZwBHMtGojdbUxVJW-fz6i_ggI7XfGSdSRxHb0TISsokcG7FeC34y3TEsSgiAVgK7DwAVsdzWHfjrvsoIKoDkZW82ihBvkIbl_l4rFuiHM6AG24HizGgZZ0aNInxQ2i3UA40ZD_r0s-DAgE-PQLX74Khak-52AyQVdeqy10_HkoUnxhxXW_t5LXMaVCP_Qp68QLFK1DrWFwmEQ0VPFf57BUnv89OO4qh4D65dsd7K1hJq4QBEBLvJATuMsZotADr5y0QZkULFFMO3vI8c0-rxOuJ4xTcRCuqxaNyPuJoWe5ykx5i_YBp64YtmoHqWwHcmKZ4NkcDQljfF5EXY49vjwAz2trna9Ov9WZhTtFANKZCBOP66eajlAUYTCrSlusZUmswKdq63HhfoR-wUt1hfGjWhJ3Qb_pGLYutvpmVO7SW2ddDOFpQ2_ecKx1M7rDtKPHMYR20q6ssOX8O2SmEQ4kdW-t6de0s2z-q3rgtteNtQaNXtX3LB62unMGc1M2aBSXMZlrPvhLqqUntWtkMO5RHoRSaIzuJ-7FPdHJiWeY0zTOdVJSh-ZOtDzoE7CI0SBdaYFJ5K9MobEWJ2NZy4UK1um230q8pnfI7M7DkWui7y62srSKrXbOQfECcaRZWZaqtQm8yzCXnTyx7dTA6w7aVDat_ln05kpFeM0UYjZTJTs38KI-Dd_SKzLy4-4IcvKO7OQyXz_Iw27NPTzX1zoV5_0bUU5f7lGGvU2pW2iOt-fNoPWlNe7MP7H16_9Fea5mPO0pkIgQVyaohQtsFcpISZ5LUOiMrBUk2y3Rgr0h06lvp3nNPMl3xKEqOtfe1epWlh7haROqcrk0RtsFtabvYrK5UZ5TVovrzOcy05e3P7jx3UBPlXL6Hqjzd4JUw1mo6M5Y4ybphDYVvPB9XreMgzGTuimQ9nnjCpHQglBdTESq08YQ4A95khfAQZ1e2FYL6NldIkBg7G6j-pir-Ky8dXX2y0g7AjKcrGJyxpyR2Dp9DOkpv__pRkYFuuZkvIs--iJBYqGhrqNSzdOHkvWVCuHeWRNk0gwmy9hZNN_JKmEwxyMGem09ReNpXB1c9zRwT6QpJqrzR5_EpG5VQB6OZ85ph0tp6nyKjPrpkTJxitNGhgaTssraKfjnAh98EZLujxII5E2-nT_Jc2sJCIlanziFxOZ6vwkCeO6BzibmjRPn66Fp5fayfu82uzwdxkDmTm5yHNz6TcEGG3s4CMaG556tuR4m-z01ipJFecdB9cEuicJFPFKDOJ-nA-PdpU-ekbVjKvuPDzY3Ea4iNYwYK3xVCsOj4wgMKkm9_myxwwIpdqfWFAAQmzYN1NQ_tQo8HAZdryMco05fLIoOJL0VLXQDw6-AUEOstD3gKxlFwhg5AiBCXLQBwQMBUdCw0tpnztITji-hmqmLaaw742EQpilF5Xhh7KUyeAy4PfN4poBifFBn4wAEEaIRWQjGu4EO0RS5FwbLngq3XadlSYJErYKzi0FKJJ3g4MXCDMm-bFgjbYk-gzZxoidYIQnBTAo3yVx_ifJYAz0K_KGae4xd-sZYFrsJ6XhQetYcbuVHGezUM11vckWtKhM6uv06AE6CkmCWz-DCS75QJjGe3QpyvaNHHCyicgi80w2i3QKZrAQBXyc-gBvZy03JlAbcdJUIIcgGZi2YZGeQ16Jptqs6ZgiWeCoN4aZ84Nw2sGqZW2GG1WJsF1Guv4pio4erMeCmIAHhk02UZlHOTr59XQBY4X27Ata-Qqw2wwNtdyJBuKjLWwWNT-Auv8a65ICDDo9jrUF6WJc4Y0dFRqgAsuY6I6_JSCYDKx0GCQSyetDoXJMZbfJ7UpeKEekUr2s9nfcYTqhJtCfjBLhi-85Q5QNkscep4R6UtAy-_q76EMtznbw2WRgpv-TZXrDkHY6-9G2wx5S6WgeuUXTHljni88U4JC-2iuGMSEFgHFl-fDMvUTmNI79dJAUprr70smoabvE42TwZ6Ls2Xe3A8DQW36HouB45lgR3F7IVff44fOwbqumf8s6Ktqh71v7Nq48kQnNawrI43cFkErUiAJLoT0OhRStcFlpxwAYARFlBcJMUC_K0DIHGhqxxgluwvT4LOTiM8LwKuCl5hjckIt01SLKUOsOIWGzcHk1bmfc_LmmBxWtFBd-ipwZH2U0Q9FH3GqNM9IclvcmDqsAVY6gjoWeDuda7rtR4WFXDLYyBkV0-MFnAqq-IAfQDsIr_AzrskrnMJoK-XuWLEzywehuTQJkrBnaDhFeOxG_dgraWVUMfazAjDFjCkAOThQgAkjoqaA3hGAC3lwL_2xGJkAHKN6BPop3tqRcaCFgTnMvOlStGo-bxm1tmsngxtpGpjAKGNZBQ0-kWL38gL-EumW9e4wJzQCa3nhPf-3omsu_GGjWLs4WUP4N4nNHufl6Kz94mhMEiBoCWHOOwVimgPdRVkVp5f-7fFwaOBkZZk3X5ie6CcUWJbo95RYiOrtZQI6kR2D99qGT6zVrAgMeQoeogkW2EdwY7NuVHYRrgE7OEaiTIf3Da0o0TX0CCctcxN8_oCKFQwpMG2L6CHzvNwxbNKC4GheGCknJa1YxE84AG_CrR6iqPlhGjKYtmsag5J_Y6siYeC2MZlNP3ePVxNd73xBL9EOQFAMWMFhSWtH2Y8n9cojwlJHNi7MgAwAYJqB5iCYq-lzKIaADi96mfDdXDiVjOsHhqyJuWE07vM1uFViosg7mhNekp-uZxwpeKI5z8PURg9B4fcmsKXimPBUVo2S5C3O19DdWZ7iLjaiXQZ8QWNlxUKY8ISt7mRKOikMRUMqF0l6c5C1ipUJ5wb0zu4gwP4-MgY2nZhzfDtRXg-Htqe3VHi4z3GMvChIm4NB5T3xAVOGj_dHo1y8Vk5v2-UFHXZ5gd-pXmtnWnyza5Sl6yrWbyes5RH3gq6Y22rXQxbuUr9TztP2812lFjfW_FOAxe2MrZfQN2si-SguhEHNw_S1W_NGWDmVr2VvIs9j6QYVjzxDDzTFZ2MlapIEkvPtavoVHh6RXos0wi9SbOB2tkwqE9TuaNEjeHEz4yqxC9ufdQdcKquTZ56T7mPu4PcIetUP7zWGND82L9eMULQvMoCgWOcO9fe7nIik-ZdKtUYZmoLa3vYvEdSm7bnwGeAt-6EKgxET8Wcu6Yk3yLUa10_xHjP3-NgIKulMtF0gfkDqdJnLxJpsvs6M0nFP9qQYuND_6SUu5mKV37RoWeA_enuOp7CHy7H0-TrV9rhxLOX3Un32h6YJym4w83tqWEF4cr7M8oWdyPU5bxxIi3DULN6PhboMwZSC_QXLEsMnOxmrE_58g6hk4WlA0hto-kCAJkDV2fVpSxS6pX-HOsLj7Gi9elbmjp0cNGBA1t-MWzCRAzvnq_FnYBIxZQYCuC2XxKATNTFFo-yezYujBYbDX30JAcIm3IJRVO8qztKvIISyWeBJ6BTpaWIFXs2wKU4hdc9z4k4nCRTmXeUSGvcKaNVszu-Q-BWl5mVs_s5ONOYSw-PCdI8al69C78oV4dIgQ_upKKaAVZsOg_A7bzq5Z0rYLfVpqniBYgCfC4qTomYC3ID4ftiWQpehZEvBcWycuwJvbgfWthC7Ir5nji_Tpe5BF3ewlxyPwPoRVcZJUtAp4UKAEwF2Irp_jgBGqdghKOCRUNbNq7EJggM2lsS-8H3J0kleEWwjFwFCBhp28GjWEnEvdRb67MV0PcL4ol7yxYwP_FuFDzayN5RIkjAGLXbMuSFyErSyY1XepmBphcPg7cO0zkQyT2WBTyqIaAwVkMbSXFgWeKiWFKcJ7jmwFC1fFAnI8u_HsNH4-Lz64QMVlWvr6LZ80oZo1xEXLcmfe3tNw-06VaoEPxNVfC6CfC6WeLzDsd6R4DvOn9WiH8Qr9KAAB_f-zlMPj4-DtSeJsgDxe054sCyh_2OAN2Q3vP1H2s7_IMhqS-Fr-vRtV3cTP3Hs67JHcW_KPEbP667tE_-HK_1q9Xjf6e_itfto49e039aI39jh03Sf_xk_0n7pR2Sj24aXjXQkHcfOwp-_MyQEXYHSE4ttTsIL2OPLq7quepflr5i-s3an7H9nseUDk3V4q9Mnl8yf6UUw_ye_W-ennW9_7lIv2gRf6_zi9hv4uThr0s2rtGXi58bsX4t3aObmy4ufwbxi7H9327Y2g79x9_5fpsb0ulXMH1iy8nauUo-ovQTHL8KJPn9_l_h9nV9ou5_jLm_ZPyVyR__KuheIPnf7e7_A1j_GyT9M8z-8e9B61_R9a9A9q9g_Snwf4rZr-sv0P2W_Ngnx_0x_Jb-IA8MQTIEyzDfsh_3kOVSOqWJI0mmFM0doyMdEvc7RTNHJuHYb_kPiqAYgiUPBMcc9sx3MmSZe5zsD9GRCBmC3tFEWod59f3db7UD_paP45z-IGma5shvVRil1fjnR_rhx0vqj2jG444mqnycxv_Um_KpSn8IbbOjDtPHkIbJx31o648dS_xE-VrXX2v4J2GJj7BJPoV-IuH5yf-dvBDAEh9jXs_VFDZpO4_V9m0eqh-_N444n7I5-h639VcX-UX-6Ia2SOPp_SVunNPXi-ory8cP6j8CAAD__zRJujY">