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re PR tree-optimization/64950 (postpone expanding va_arg till pass_stdarg)

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PR tree-optimization/64950
	Revert:
	2010-08-02  Uros Bizjak  <ubizjak@gmail.com>

	PR target/41089
	* config/alpha/alpha.c (alpha_build_builtin_va_list): Mark __offset
	as volatile.

From-SVN: r222257
This commit is contained in:
Uros Bizjak 2015-04-21 08:29:37 +02:00 committed by Uros Bizjak
parent 3e87f2d6dd
commit d60dbb52fc
2 changed files with 11 additions and 5 deletions
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12
gcc/ChangeLog
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@ -1,3 +1,13 @@
2015-04-21 Uros Bizjak <ubizjak@gmail.com>
PR tree-optimization/64950
Revert:
2010-08-02 Uros Bizjak <ubizjak@gmail.com>
PR target/41089
* config/alpha/alpha.c (alpha_build_builtin_va_list): Mark __offset
as volatile.
2015-04-20 Shiva Chen <shiva0217@gmail.com>
PR rtl-optimization/64916
@ -15,7 +25,7 @@
* tree-ssa-threadupdate.c (redirection_block_p): Remove
redundant test for GIMPLE_ASSIGN in last change.
2015-04-19 Uros Bizjak <ubizjak@gmail.com>
2015-04-20 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (set_pic_reg_ever_live): Remove.
(legitimize_pic_address): Do not call set_pic_reg_ever_live.

4
gcc/config/alpha/alpha.c
View File

@ -5957,10 +5957,6 @@ alpha_build_builtin_va_list (void)
integer_type_node);
DECL_FIELD_CONTEXT (ofs) = record;
DECL_CHAIN (ofs) = space;
/* ??? This is a hack, __offset is marked volatile to prevent
DCE that confuses stdarg optimization and results in
gcc.c-torture/execute/stdarg-1.c failure. See PR 41089. */
TREE_THIS_VOLATILE (ofs) = 1;
base = build_decl (BUILTINS_LOCATION,
FIELD_DECL, get_identifier ("__base"),