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Fri, 12 Aug 2022 15:34:23 +0000 Received: from e124257 (10.34.105.24) by mail.arm.com (10.251.24.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.9 via Frontend Transport; Fri, 12 Aug 2022 15:34:22 +0000 From: Andrea Corallo To: Andrea Corallo via Gcc-patches CC: Richard Earnshaw , nd Subject: [PATCH 9/15] arm: Set again stack pointer as CFA reg when popping if necessary References: Date: Fri, 12 Aug 2022 17:34:22 +0200 In-Reply-To: (Andrea Corallo via Gcc-patches's message of "Fri, 12 Aug 2022 16:26:49 +0200") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1.50 (gnu/linux) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" X-EOPAttributedMessage: 1 X-MS-Office365-Filtering-Correlation-Id: fb67ae31-aef7-46e2-999f-08da7c783cdc X-MS-TrafficTypeDiagnostic: AM6PR08MB2952:EE_|DBAEUR03FT018:EE_|AM4PR08MB2675:EE_ x-checkrecipientrouted: true NoDisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0; 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charset="utf-8" Content-Disposition: attachment; filename="9-15.patch" diff --git a/gcc/config/arm/arm.cc b/gcc/config/arm/arm.cc index ceec14f84b6..a5cf4225aa2 100644 --- a/gcc/config/arm/arm.cc +++ b/gcc/config/arm/arm.cc @@ -22303,8 +22303,18 @@ arm_emit_multi_reg_pop (unsigned long saved_regs_mask) REG_NOTES (par) = dwarf; if (!return_in_pc) - arm_add_cfa_adjust_cfa_note (par, UNITS_PER_WORD * num_regs, - stack_pointer_rtx, stack_pointer_rtx); + { + /* If the frame pointer was set define again the stack pointer + as CFA reg. */ + if (frame_pointer_needed) + { + RTX_FRAME_RELATED_P (par) = 1; + add_reg_note (par, REG_CFA_DEF_CFA, stack_pointer_rtx); + } + else + arm_add_cfa_adjust_cfa_note (par, UNITS_PER_WORD * num_regs, + stack_pointer_rtx, stack_pointer_rtx); + } } /* Generate and emit an insn pattern that we will recognize as a pop_multi --=-=-=--