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{ "id": 2219731, "url": "http://patchwork.ozlabs.org/api/patches/2219731/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260404022637.3094-2-gerris.rs@gmail.com/", "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, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260404022637.3094-2-gerris.rs@gmail.com>", "list_archive_url": null, "date": "2026-04-04T02:26:37", "name": "[gccrs,COMMIT,2/2] intrinsic: Add tests for cttz and cttz_nonzero", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "2f94a0b31709f378f1e99eaf256ae5c3a543b097", "submitter": { "id": 92092, "url": "http://patchwork.ozlabs.org/api/people/92092/?format=api", "name": null, "email": "gerris.rs@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260404022637.3094-2-gerris.rs@gmail.com/mbox/", "series": [ { "id": 498695, "url": "http://patchwork.ozlabs.org/api/series/498695/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=498695", "date": "2026-04-04T02:26:36", "name": "[gccrs,COMMIT,1/2] intrinsic: Add cttz and cttz_nonzero intrinsics", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498695/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2219731/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219731/checks/", "tags": {}, "related": [], "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 (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=bsJMTdkU;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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// { dg-error \"cttz intrinsics can only be used with basic integer types .got 'bool'.\" }\n+}\n+\n+fn main() {\n+ let _ = cttz(true);\n+}\ndiff --git a/gcc/testsuite/rust/compile/cttz_nonzero.rs b/gcc/testsuite/rust/compile/cttz_nonzero.rs\nnew file mode 100644\nindex 000000000..210bd8bd2\n--- /dev/null\n+++ b/gcc/testsuite/rust/compile/cttz_nonzero.rs\n@@ -0,0 +1,19 @@\n+// { dg-do compile }\n+#![feature(intrinsics, lang_items, no_core)]\n+#![no_core]\n+\n+#[lang = \"sized\"]\n+pub trait Sized {}\n+\n+#[lang = \"copy\"]\n+pub trait Copy {}\n+\n+extern \"rust-intrinsic\" {\n+ pub fn cttz_nonzero<T>(x: T) -> u32; // { dg-error \"cttz intrinsics can only be used with basic integer types .got 'bool'.\" }\n+}\n+\n+fn main() {\n+ unsafe {\n+ let _ = cttz_nonzero(true);\n+ }\n+}\ndiff --git a/gcc/testsuite/rust/execute/torture/cttz.rs b/gcc/testsuite/rust/execute/torture/cttz.rs\nnew file mode 100644\nindex 000000000..d9f4656de\n--- /dev/null\n+++ b/gcc/testsuite/rust/execute/torture/cttz.rs\n@@ -0,0 +1,97 @@\n+#![feature(no_core)]\n+#![no_core]\n+#![feature(intrinsics)]\n+#![feature(lang_items)]\n+\n+#[lang = \"sized\"]\n+pub trait Sized {}\n+\n+extern \"rust-intrinsic\" {\n+ pub fn cttz<T>(x: T) -> u32;\n+ pub fn abort() -> !;\n+}\n+\n+fn main() -> i32 {\n+ // cttz(0) must return bit_size per the Rust reference\n+ if cttz(0u8) != 8 {\n+ abort();\n+ }\n+ if cttz(1u8) != 0 {\n+ abort();\n+ }\n+ if cttz(0xFFu8) != 0 {\n+ abort();\n+ }\n+\n+ if cttz(0u16) != 16 {\n+ abort();\n+ }\n+ if cttz(1u16) != 0 {\n+ abort();\n+ }\n+ if cttz(0xFFFFu16) != 0 {\n+ abort();\n+ }\n+\n+ if cttz(0u32) != 32 {\n+ abort();\n+ }\n+ if cttz(1u32) != 0 {\n+ abort();\n+ }\n+ if cttz(0xFFFFFFFFu32) != 0 {\n+ abort();\n+ }\n+\n+ if cttz(0u64) != 64 {\n+ abort();\n+ }\n+ if cttz(1u64) != 0 {\n+ abort();\n+ }\n+ if cttz(!0u64) != 0 {\n+ abort();\n+ }\n+\n+ if cttz(0i8) != 8 {\n+ abort();\n+ }\n+ if cttz(1i8) != 0 {\n+ abort();\n+ }\n+ if cttz(-1i8) != 0 {\n+ abort();\n+ }\n+\n+ if cttz(0i16) != 16 {\n+ abort();\n+ }\n+ if cttz(1i16) != 0 {\n+ abort();\n+ }\n+ if cttz(-1i16) != 0 {\n+ abort();\n+ }\n+\n+ if cttz(0i32) != 32 {\n+ abort();\n+ }\n+ if cttz(1i32) != 0 {\n+ abort();\n+ }\n+ if cttz(-1i32) != 0 {\n+ abort();\n+ }\n+\n+ if cttz(0i64) != 64 {\n+ abort();\n+ }\n+ if cttz(1i64) != 0 {\n+ abort();\n+ }\n+ if cttz(-1i64) != 0 {\n+ abort();\n+ }\n+\n+ 0\n+}\ndiff --git a/gcc/testsuite/rust/execute/torture/cttz_nonzero.rs b/gcc/testsuite/rust/execute/torture/cttz_nonzero.rs\nnew file mode 100644\nindex 000000000..749dffaf6\n--- /dev/null\n+++ b/gcc/testsuite/rust/execute/torture/cttz_nonzero.rs\n@@ -0,0 +1,74 @@\n+#![feature(no_core)]\n+#![no_core]\n+#![feature(intrinsics)]\n+#![feature(lang_items)]\n+\n+#[lang = \"sized\"]\n+pub trait Sized {}\n+\n+extern \"rust-intrinsic\" {\n+ pub fn cttz_nonzero<T>(x: T) -> u32;\n+ pub fn abort() -> !;\n+}\n+\n+fn main() -> i32 {\n+ unsafe {\n+ if cttz_nonzero(1u8) != 0 {\n+ abort();\n+ }\n+ if cttz_nonzero(0xFFu8) != 0 {\n+ abort();\n+ }\n+\n+ if cttz_nonzero(1u16) != 0 {\n+ abort();\n+ }\n+ if cttz_nonzero(0xFFFFu16) != 0 {\n+ abort();\n+ }\n+\n+ if cttz_nonzero(1u32) != 0 {\n+ abort();\n+ }\n+ if cttz_nonzero(0xFFFFFFFFu32) != 0 {\n+ abort();\n+ }\n+\n+ if cttz_nonzero(1u64) != 0 {\n+ abort();\n+ }\n+ if cttz_nonzero(!0u64) != 0 {\n+ abort();\n+ }\n+\n+ if cttz_nonzero(1i8) != 0 {\n+ abort();\n+ }\n+ if cttz_nonzero(-1i8) != 0 {\n+ abort();\n+ }\n+\n+ if cttz_nonzero(1i16) != 0 {\n+ abort();\n+ }\n+ if cttz_nonzero(-1i16) != 0 {\n+ abort();\n+ }\n+\n+ if cttz_nonzero(1i32) != 0 {\n+ abort();\n+ }\n+ if cttz_nonzero(-1i32) != 0 {\n+ abort();\n+ }\n+\n+ if cttz_nonzero(1i64) != 0 {\n+ abort();\n+ }\n+ if cttz_nonzero(-1i64) != 0 {\n+ abort();\n+ }\n+ }\n+\n+ 0\n+}\n", "prefixes": [ "gccrs", "COMMIT", "2/2" ] }