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Ip=[4.158.2.129];\n Helo=[outbound-uk1.az.dlp.m.darktrace.com]","X-MS-Exchange-CrossTenant-AuthSource":"\n DU6PEPF0000A7DD.eurprd02.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Anonymous","X-MS-Exchange-CrossTenant-FromEntityHeader":"HybridOnPrem","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":"The SAVED_LOCAL state is only used as the result of an EH edge, where\nthe state transition happens automatically. Mode switching should not\ninsert any new transitions to SAVED_LOCAL state, so assert that this is\nthe case, and remove the resulting dead code.\n\ngcc/ChangeLog:\n\n\t* config/aarch64/aarch64.cc (aarch64_mode_emit_local_sme_state):\n\tAdd assert and remove subsequent handling.\n\ndisable transition to SAVED_LOCAL\n\nfixup saved local","diff":"diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc\nindex 693ce8b4d25cd8cef03e415ea1c033cb9311cb21..37b85c0a59553f48d535c93c3dc0295b631c52fd 100644\n--- a/gcc/config/aarch64/aarch64.cc\n+++ b/gcc/config/aarch64/aarch64.cc\n@@ -31928,6 +31928,10 @@ aarch64_mode_emit_local_sme_state (aarch64_local_sme_state mode,\n a known mode. */\n gcc_assert (prev_mode != aarch64_local_sme_state::ANY);\n \n+ /* SAVED_LOCAL state is entered automatically on EH edges. Mode switching\n+ should not emit any new transitions into this state. */\n+ gcc_assert (mode != aarch64_local_sme_state::SAVED_LOCAL);\n+\n if (prev_mode == aarch64_local_sme_state::INACTIVE_CALLER)\n {\n /* Commit any uncommitted lazy save. This leaves ZA either active\n@@ -32104,14 +32108,6 @@ aarch64_mode_emit_local_sme_state (aarch64_local_sme_state mode,\n return;\n }\n \n- if (mode == aarch64_local_sme_state::SAVED_LOCAL)\n- {\n- /* This is a transition to an exception handler. */\n- gcc_assert (prev_mode == aarch64_local_sme_state::OFF\n-\t\t || prev_mode == aarch64_local_sme_state::INACTIVE_LOCAL);\n- return;\n- }\n-\n gcc_unreachable ();\n }\n \n","prefixes":["v2","3/6"]}