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Ip=[4.158.2.129];\n Helo=[outbound-uk1.az.dlp.m.darktrace.com]","X-MS-Exchange-CrossTenant-AuthSource":"\n AM4PEPF00025F98.EURPRD83.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":"Explain why aarch64_start_call_args only needs to save and restore zt0\nif the callee shares ZA state.\n\ngcc/ChangeLog:\n\n\t* config/aarch64/aarch64.cc (aarch64_start_call_args): Extend\n\tcomment.","diff":"diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc\nindex 8c75e4d396feb83cfe7832256023d33490a6e3c2..f6e070da126a8677d70f3e9a85b7dffb714ce67f 100644\n--- a/gcc/config/aarch64/aarch64.cc\n+++ b/gcc/config/aarch64/aarch64.cc\n@@ -12212,7 +12212,8 @@ aarch64_start_call_args (cumulative_args_t ca_v)\n emit_insn (gen_aarch64_start_private_za_call ());\n \n /* If this is a call to a shared-ZA function that doesn't share ZT0,\n- save and restore ZT0 around the call. */\n+ save and restore ZT0 around the call. If ZA is not shared, then the\n+ save/restore is instead emitted by aarch64_mode_emit_local_sme_state. */\n if (aarch64_cfun_has_state (\"zt0\")\n && (ca->isa_mode & AARCH64_ISA_MODE_ZA_ON)\n && ca->shared_zt0_flags == 0)\n","prefixes":["v2","5/6"]}