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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/94595] gcc.target/arm/thumb2-cond-cmp-*.c fail for cortex-m Date: Wed, 30 Sep 2020 14:55:54 +0000 [thread overview] Message-ID: <bug-94595-4-jWBVnlOdkq@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-94595-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94595 --- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Christophe Lyon <clyon@gcc.gnu.org>: https://gcc.gnu.org/g:ef11f5b37b0a62dbad9ed37613a3799dc98f6f8b commit r11-3564-gef11f5b37b0a62dbad9ed37613a3799dc98f6f8b Author: Christophe Lyon <christophe.lyon@linaro.org> Date: Mon Sep 7 14:53:38 2020 +0000 arm: [testsuite] Skip thumb2-cond-cmp tests on Cortex-M [PR94595] Since r204778 (g571880a0a4c512195aa7d41929ba6795190887b2), we favor branches over IT blocks on Cortex-M. As a result, instead of generating two nested IT blocks in thumb2-cond-cmp-[1234].c, we generate either a single IT block, or use branches depending on conditions tested by the program. Since this was a deliberate change and the tests still pass as expected on Cortex-A, this patch skips them when targetting Cortex-M. The avoids the failures on Cortex M3, M4, and M33. This patch makes the testcases unsupported on Cortex-M7 although they pass in this case because this CPU has different branch costs. I tried to relax the scan-assembler directives using eg. cmpne|subne or cmpgt|ble but that seemed fragile. 2020-09-07 Christophe Lyon <christophe.lyon@linaro.org> gcc/testsuite/ PR target/94595 * gcc.target/arm/thumb2-cond-cmp-1.c: Skip if arm_cortex_m. * gcc.target/arm/thumb2-cond-cmp-2.c: Skip if arm_cortex_m. * gcc.target/arm/thumb2-cond-cmp-3.c: Skip if arm_cortex_m. * gcc.target/arm/thumb2-cond-cmp-4.c: Skip if arm_cortex_m.
next prev parent reply other threads:[~2020-09-30 14:55 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-04-14 14:18 [Bug target/94595] New: " clyon at gcc dot gnu.org 2020-09-07 16:13 ` [Bug target/94595] " clyon at gcc dot gnu.org 2020-09-08 12:51 ` clyon at gcc dot gnu.org 2020-09-30 14:55 ` cvs-commit at gcc dot gnu.org [this message] 2020-09-30 14:56 ` clyon at gcc dot gnu.org
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