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comparison gcc/tree-nrv.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents 84e7813d76e9
children
comparison
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131:84e7813d76e9 145:1830386684a0
1 /* Language independent return value optimizations 1 /* Language independent return value optimizations
2 Copyright (C) 2004-2018 Free Software Foundation, Inc. 2 Copyright (C) 2004-2020 Free Software Foundation, Inc.
3 3
4 This file is part of GCC. 4 This file is part of GCC.
5 5
6 GCC is free software; you can redistribute it and/or modify 6 GCC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by 7 it under the terms of the GNU General Public License as published by
191 /* Now verify that this return statement uses the same value 191 /* Now verify that this return statement uses the same value
192 as any previously encountered return statement. */ 192 as any previously encountered return statement. */
193 if (found != NULL) 193 if (found != NULL)
194 { 194 {
195 /* If we found a return statement using a different variable 195 /* If we found a return statement using a different variable
196 than previous return statements, then we can not perform 196 than previous return statements, then we cannot perform
197 NRV optimizations. */ 197 NRV optimizations. */
198 if (found != rhs) 198 if (found != rhs)
199 return 0; 199 return 0;
200 } 200 }
201 else 201 else
376 376
377 stmt = dyn_cast <gcall *> (gsi_stmt (gsi)); 377 stmt = dyn_cast <gcall *> (gsi_stmt (gsi));
378 if (stmt 378 if (stmt
379 && gimple_call_lhs (stmt) 379 && gimple_call_lhs (stmt)
380 && !gimple_call_return_slot_opt_p (stmt) 380 && !gimple_call_return_slot_opt_p (stmt)
381 /* Ignore internal functions without direct optabs, 381 /* Ignore internal functions, those are expanded specially
382 those are expanded specially and aggregate_value_p 382 and aggregate_value_p on their result might result in
383 on their result might result in undesirable warnings 383 undesirable warnings with some backends. */
384 with some backends. */ 384 && !gimple_call_internal_p (stmt)
385 && (!gimple_call_internal_p (stmt)
386 || direct_internal_fn_p (gimple_call_internal_fn (stmt)))
387 && aggregate_value_p (TREE_TYPE (gimple_call_lhs (stmt)), 385 && aggregate_value_p (TREE_TYPE (gimple_call_lhs (stmt)),
388 gimple_call_fndecl (stmt))) 386 gimple_call_fndecl (stmt)))
389 { 387 {
390 /* Check if the location being assigned to is 388 /* Check if the location being assigned to is
391 clobbered by the call. */ 389 clobbered by the call. */