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Fix aarch64 ILP32 ICE with vaarg gimplified code 

2018-04-27  Richard Biener  <rguenther@suse.de>

	* config/aarch64/aarch64.c: Simplify ap.__stack advance and
	fix for ILP32.

From-SVN: r259711
This commit is contained in:
Richard Biener 2018-04-27 14:32:09 +00:00 committed by Kyrylo Tkachov
parent 036b5ad136
commit 4bdc2738ce
2 changed files with 7 additions and 8 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2018-04-27 Richard Biener <rguenther@suse.de>
* config/aarch64/aarch64.c: Simplify ap.__stack advance and
fix for ILP32.
2018-04-27 Richard Biener <rguenther@suse.de>
* tree-cfg.c (verify_expr): Make dead code hit gcc_unreachable.

10
gcc/config/aarch64/aarch64.c
View File

@ -12267,23 +12267,17 @@ aarch64_gimplify_va_arg_expr (tree valist, tree type, gimple_seq *pre_p,
if (align > 8)
{
/* if (alignof(type) > 8) (arg = arg + 15) & -16; */
t = fold_convert (intDI_type_node, arg);
t = build2 (PLUS_EXPR, TREE_TYPE (t), t,
build_int_cst (TREE_TYPE (t), 15));
t = fold_build_pointer_plus_hwi (arg, 15);
t = build2 (BIT_AND_EXPR, TREE_TYPE (t), t,
build_int_cst (TREE_TYPE (t), -16));
t = fold_convert (TREE_TYPE (arg), t);
roundup = build2 (MODIFY_EXPR, TREE_TYPE (arg), arg, t);
}
else
roundup = NULL;
/* Advance ap.__stack */
t = fold_convert (intDI_type_node, arg);
t = build2 (PLUS_EXPR, TREE_TYPE (t), t,
build_int_cst (TREE_TYPE (t), size + 7));
t = fold_build_pointer_plus_hwi (arg, size + 7);
t = build2 (BIT_AND_EXPR, TREE_TYPE (t), t,
build_int_cst (TREE_TYPE (t), -8));
t = fold_convert (TREE_TYPE (arg), t);
t = build2 (MODIFY_EXPR, TREE_TYPE (stack), unshare_expr (stack), t);
/* String up roundup and advance. */
if (roundup)