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GET /api/1.1/patches/2232308/?format=api
{ "id": 2232308, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2232308/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260504101556.1565434-1-eikansh.gupta@oss.qualcomm.com/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.1/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, "webscm_url": null }, "msgid": "<20260504101556.1565434-1-eikansh.gupta@oss.qualcomm.com>", "date": "2026-05-04T10:15:56", "name": "[v2] match.pd: Add pattern to fold (X - (X<0)) ^ -(X<0) into ABS_EXPR<X> [PR123514]", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "e0ff11bd98568e17f8ddbe75764a6eafa8b1cdea", "submitter": { "id": 92956, "url": "http://patchwork.ozlabs.org/api/1.1/people/92956/?format=api", "name": "Eikansh Gupta", "email": "eikansh.gupta@oss.qualcomm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260504101556.1565434-1-eikansh.gupta@oss.qualcomm.com/mbox/", "series": [ { "id": 502638, "url": "http://patchwork.ozlabs.org/api/1.1/series/502638/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=502638", "date": "2026-05-04T10:15:56", "name": "[v2] match.pd: Add pattern to fold (X - (X<0)) ^ -(X<0) into ABS_EXPR<X> [PR123514]", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/502638/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2232308/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232308/checks/", "tags": {}, "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "gcc-patches@gcc.gnu.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass 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"gcc-patches@gcc.gnu.org", "Cc": "Eikansh Gupta <eikansh.gupta@oss.qualcomm.com>", "Subject": "[PATCH v2] match.pd: Add pattern to fold (X - (X<0)) ^ -(X<0) into\n ABS_EXPR<X> [PR123514]", "Date": "Mon, 4 May 2026 15:45:56 +0530", "Message-Id": "<20260504101556.1565434-1-eikansh.gupta@oss.qualcomm.com>", "X-Mailer": "git-send-email 2.34.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Proofpoint-GUID": "bGHY3DwZQzl5pv6Vt3aqx4cikYZ-qm9N", "X-Proofpoint-ORIG-GUID": "bGHY3DwZQzl5pv6Vt3aqx4cikYZ-qm9N", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNTA0MDEwOSBTYWx0ZWRfX6NYazwJzyIv6\n hHv0/gxwdcvsVwgRBonVSC60VIUGRVRTLXy0zARuUtJ0NkEFbc/2Ke7W3+FTGGsztQNxPdexhNY\n njvRx8Bu+uMHERFl4RCPZV7plmy7H0/vePUSHBYh4HYe5C+GvJFDVcOXjovqdmeipIgrHh2OUGt\n keJX4yca3O0rPd8WG89FUWl/dIYW3baHTOn5CJjo4DFolMbn3Cg7dkKCMf5qdGCMkOkMfco14qD\n r+eUoGnS5LWdGDUH4Y2YfvBKXPb/0J97/HjRD4CPtkZiDlSbZjGO2Xc3GyhBF25c7MCLuQVQLB6\n fBII90UkHjcHv1dLcVZRuylAUbgr0yqBA8ynEa5X6DLen1RzjR3JQtFABSVi4fkEi22vcUVq0rD\n 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"X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "Adds a pattern to fold (x - (x<0)) ^ -(x<0) into ABS_EXPR<x>.\n\n\tPR 123514\n\ngcc/ChangeLog:\n\n\t* match.pd (x - (x<0)) ^ -(x<0) into ABS_EXPR<x>): New pattern.\n\ngcc/testsuite/ChangeLog:\n\n\t* gcc.dg/tree-ssa/pr123514.c: New test.\n\nSigned-off-by: Eikansh Gupta <eikansh.gupta@oss.qualcomm.com>\n---\n gcc/match.pd | 8 ++++++++\n gcc/testsuite/gcc.dg/tree-ssa/pr123514.c | 11 +++++++++++\n 2 files changed, 19 insertions(+)\n create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/pr123514.c", "diff": "diff --git a/gcc/match.pd b/gcc/match.pd\nindex 7db8ce7580f..491d38b92a2 100644\n--- a/gcc/match.pd\n+++ b/gcc/match.pd\n@@ -230,6 +230,14 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)\n (abs @0)))\n #endif\n \n+/* (X - (X < 0)) ^ -(X < 0) -> abs (X) */\n+(simplify\n+ (bit_xor:c (minus @0 (convert@1 (lt @0 integer_zerop)))\n+\t (negate @1))\n+ (if (INTEGRAL_TYPE_P (TREE_TYPE (@0))\n+ && !TYPE_UNSIGNED (TREE_TYPE (@0)))\n+ (abs @0)))\n+\n /* Simplifications of operations with one constant operand and\n simplifications to constants or single values. */\n \ndiff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr123514.c b/gcc/testsuite/gcc.dg/tree-ssa/pr123514.c\nnew file mode 100644\nindex 00000000000..4a09d859031\n--- /dev/null\n+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr123514.c\n@@ -0,0 +1,11 @@\n+/* { dg-do compile } */\n+/* { dg-options \"-O1 -fdump-tree-optimized\" } */\n+\n+int\n+bit_trick (int x)\n+{\n+ int mask = -(x < 0);\n+ return ((x + mask) ^ mask);\n+}\n+\n+/* { dg-final { scan-tree-dump \"ABS_EXPR\" \"optimized\" } } */\n", "prefixes": [ "v2" ] }