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GET /api/patches/812854/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
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{
    "id": 812854,
    "url": "http://patchwork.ozlabs.org/api/patches/812854/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/alpine.LSU.2.20.1709121546240.26836@zhemvz.fhfr.qr/",
    "project": {
        "id": 17,
        "url": "http://patchwork.ozlabs.org/api/projects/17/?format=api",
        "name": "GNU Compiler Collection",
        "link_name": "gcc",
        "list_id": "gcc-patches.gcc.gnu.org",
        "list_email": "gcc-patches@gcc.gnu.org",
        "web_url": null,
        "scm_url": null,
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        "commit_url_format": ""
    },
    "msgid": "<alpine.LSU.2.20.1709121546240.26836@zhemvz.fhfr.qr>",
    "list_archive_url": null,
    "date": "2017-09-12T13:47:36",
    "name": "Fix PR82157",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "f670aea825c12b3cf62840206813a848c888bb8d",
    "submitter": {
        "id": 4338,
        "url": "http://patchwork.ozlabs.org/api/people/4338/?format=api",
        "name": "Richard Biener",
        "email": "rguenther@suse.de"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/alpine.LSU.2.20.1709121546240.26836@zhemvz.fhfr.qr/mbox/",
    "series": [
        {
            "id": 2706,
            "url": "http://patchwork.ozlabs.org/api/series/2706/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=2706",
            "date": "2017-09-12T13:47:36",
            "name": "Fix PR82157",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/2706/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/812854/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/812854/checks/",
    "tags": {},
    "related": [],
    "headers": {
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            "mailing list gcc-patches@gcc.gnu.org"
        ],
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        "Mailing-List": "contact gcc-patches-help@gcc.gnu.org; run by ezmlm",
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        "X-Virus-Found": "No",
        "X-Spam-SWARE-Status": "No, score=-11.1 required=5.0 tests=BAYES_00, GIT_PATCH_2,\n\tGIT_PATCH_3, KAM_ASCII_DIVIDERS, RP_MATCHES_RCVD,\n\tSPF_PASS autolearn=ham version=3.3.2 spammy=Hx-languages-length:1557",
        "X-HELO": "mx1.suse.de",
        "Date": "Tue, 12 Sep 2017 15:47:36 +0200 (CEST)",
        "From": "Richard Biener <rguenther@suse.de>",
        "To": "gcc-patches@gcc.gnu.org",
        "Subject": "[PATCH] Fix PR82157",
        "Message-ID": "<alpine.LSU.2.20.1709121546240.26836@zhemvz.fhfr.qr>",
        "User-Agent": "Alpine 2.20 (LSU 67 2015-01-07)",
        "MIME-Version": "1.0",
        "Content-Type": "text/plain; charset=US-ASCII"
    },
    "content": "The following fixes a latent issue in fold_stmt uncovered by\nPRE re-org.  We muck with the gsi in inapprorpate ways.\n\nBootstrapped on x86_64-unknown-linux-gnu, testing in progress.\n\nRichard.\n\n2017-09-12  Richard Biener  <rguenther@suse.de>\n\n\tPR tree-optimization/82157\n\t* tree-ssa-pre.c (remove_dead_inserted_code): Do not remove\n\tstmts with side-effects.\n\n\t* gcc.dg/torture/pr82157.c: New testcase.",
    "diff": "Index: gcc/tree-ssa-pre.c\n===================================================================\n--- gcc/tree-ssa-pre.c\t(revision 252002)\n+++ gcc/tree-ssa-pre.c\t(working copy)\n@@ -4913,6 +4964,8 @@ remove_dead_inserted_code (void)\n \tcontinue;\n \n       gimple *t = SSA_NAME_DEF_STMT (def);\n+      if (gimple_has_side_effects (t))\n+\tcontinue;\n \n       /* Add uses to the worklist.  */\n       ssa_op_iter iter;\nIndex: gcc/testsuite/gcc.dg/torture/pr82157.c\n===================================================================\n--- gcc/testsuite/gcc.dg/torture/pr82157.c\t(nonexistent)\n+++ gcc/testsuite/gcc.dg/torture/pr82157.c\t(working copy)\n@@ -0,0 +1,43 @@\n+/* { dg-do compile } */\n+\n+int a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z;\n+\n+int aa ()\n+{ \n+  w = f < 0 || e >> f;\n+  while (z)\n+    h = i && (r && p) | ((l = p) == c % d);\n+  k = v + 1 < a;\n+  t = -(j < 1) * q;\n+  return u;\n+}\n+\n+int ab ()\n+{ \n+  for (j = 0; 1; j = 5)\n+    if (!s)\n+      return d;\n+}\n+\n+void ac ()\n+{ \n+  char ad = aa ();\n+  ab ();\n+  if (x)\n+    { \n+      for (m = 0; m < 3; m = a)\n+\t{ \n+\t  y = a && b;\n+\t  if (g)\n+\t    break;\n+\t}\n+      n = j;\n+    }\n+  o = j & ad;\n+}\n+\n+int main ()\n+{ \n+  ac ();\n+  return 0;\n+}\n",
    "prefixes": []
}