{"id":2219569,"url":"http://patchwork.ozlabs.org/api/patches/2219569/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/2b4f2c2f-7206-4ea5-a544-d8bf54297c0f@gmail.com/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/projects/17/?format=json","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":"<2b4f2c2f-7206-4ea5-a544-d8bf54297c0f@gmail.com>","list_archive_url":null,"date":"2026-04-03T13:23:02","name":"[v3] mips: Fix ICE on mips64-elf by removing MAX_FIXED_MODE_SIZE [PR120144]","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"d4e1326646e2a9f26b48d9e96ef4ba19ca48402b","submitter":{"id":92812,"url":"http://patchwork.ozlabs.org/api/people/92812/?format=json","name":"Carter Rennick","email":"carter.rennick@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/2b4f2c2f-7206-4ea5-a544-d8bf54297c0f@gmail.com/mbox/","series":[{"id":498630,"url":"http://patchwork.ozlabs.org/api/series/498630/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=498630","date":"2026-04-03T13:23:02","name":"[v3] mips: Fix ICE on mips64-elf by removing MAX_FIXED_MODE_SIZE [PR120144]","version":3,"mbox":"http://patchwork.ozlabs.org/series/498630/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2219569/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219569/checks/","tags":{},"related":[],"headers":{"Return-Path":"","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=n3k6YGPg;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; 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Rozycki\" , gcc-patches@gcc.gnu.org,\n syq@gcc.gnu.org, pinskia@gcc.gnu.org","References":"\n \n \n \n \n ","Content-Language":"en-US","From":"Carter Rennick ","In-Reply-To":"","X-BeenThere":"gcc-patches@gcc.gnu.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Gcc-patches mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"},"content":"On 2026-04-01 10:03 p.m., Hans-Peter Nilsson wrote:\n> Just one thing I noticed:\n>\n>> gcc/testsuite/ChangeLog:\n>> \t* gcc.target/mips/pr120144.c: New test.\n> This should *not* be a mips-only test-case. There's nothing\n> mips-specific about it; it has a sufficient int128-guard. I\n> guess gcc.dg/torture is best?\n\nGood call. I've updated the patch with the test moved to gcc.dg/torture.\n\n---\n\n From 54dbf47c95509bbc7aafcfa171e0a9b1aff21c3f Mon Sep 17 00:00:00 2001\nFrom: Carter Rennick\nDate: Fri, 3 Apr 2026 13:07:38 +0000\nSubject: [PATCH] mips: Fix ICE on mips64-elf by removing MAX_FIXED_MODE_SIZE\n override [PR120144]\n\nThe definition of MAX_FIXED_MODE_SIZE did not account for MIPS supporting\nTImode, which causes an internal compiler error when building libstdc++. Upon further\ninvestigation, this definition appears to be a historical mistake.\n\nThis patch removes the MAX_FIXED_MODE_SIZE override, which fixes the error.\n\n\tPR target/120144\n\ngcc/ChangeLog:\n\t* config/mips/mips.h (MAX_FIXED_MODE_SIZE): Remove erroneous definition.\n\ngcc/testsuite/ChangeLog:\n\t* gcc.dg/torture/pr120144.c: New test.\n\nSigned-off-by: Carter Rennick\n---\n gcc/config/mips/mips.h | 4 ----\n gcc/testsuite/gcc.dg/torture/pr120144.c | 8 ++++++++\n 2 files changed, 8 insertions(+), 4 deletions(-)\n create mode 100644 gcc/testsuite/gcc.dg/torture/pr120144.c","diff":"diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h\nindex f52d0d2358c..c461d8aea3d 100644\n--- a/gcc/config/mips/mips.h\n+++ b/gcc/config/mips/mips.h\n@@ -1706,10 +1706,6 @@ FP_ASM_SPEC \"\\\n doesn't support 128-bit integers for MIPS32 currently. */\n #define LONG_LONG_ACCUM_TYPE_SIZE (TARGET_64BIT ? 128 : 64)\n \n-/* long double is not a fixed mode, but the idea is that, if we\n- support long double, we also want a 128-bit integer type. */\n-#define MAX_FIXED_MODE_SIZE MIPS_LONG_DOUBLE_TYPE_SIZE\n-\n /* Width in bits of a pointer. */\n #ifndef POINTER_SIZE\n #define POINTER_SIZE ((TARGET_LONG64 && TARGET_64BIT) ? 64 : 32)\ndiff --git a/gcc/testsuite/gcc.dg/torture/pr120144.c b/gcc/testsuite/gcc.dg/torture/pr120144.c\nnew file mode 100644\nindex 00000000000..e254771ea78\n--- /dev/null\n+++ b/gcc/testsuite/gcc.dg/torture/pr120144.c\n@@ -0,0 +1,8 @@\n+/* PR target/120144 */\n+/* { dg-do compile } */\n+/* { dg-require-effective-target int128 } */\n+\n+int f(unsigned __int128 t)\n+{\n+ return __builtin_clzg(t);\n+}\n","prefixes":["v3"]}