34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
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2007-05-03 Jakub Jelinek <jakub@redhat.com>
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* varasm.c (align_variable): Don't increase alignment for
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DECL_THREAD_LOCAL_P variables above BITS_PER_WORD through
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DATA_ALIGNMENT or CONSTANT_ALIGNMENT.
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--- gcc/varasm.c.jj 2007-04-14 14:55:25.000000000 +0200
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+++ gcc/varasm.c 2007-05-03 11:23:56.000000000 +0200
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@@ -1097,11 +1097,22 @@ align_variable (tree decl, bool dont_out
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if (! DECL_USER_ALIGN (decl))
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{
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#ifdef DATA_ALIGNMENT
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- align = DATA_ALIGNMENT (TREE_TYPE (decl), align);
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+ unsigned int data_align = DATA_ALIGNMENT (TREE_TYPE (decl), align);
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+ /* Don't increase alignment too much for TLS variables - TLS space
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+ is too precious. */
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+ if (! DECL_THREAD_LOCAL_P (decl) || data_align <= BITS_PER_WORD)
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+ align = data_align;
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#endif
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#ifdef CONSTANT_ALIGNMENT
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if (DECL_INITIAL (decl) != 0 && DECL_INITIAL (decl) != error_mark_node)
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- align = CONSTANT_ALIGNMENT (DECL_INITIAL (decl), align);
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+ {
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+ unsigned int const_align = CONSTANT_ALIGNMENT (DECL_INITIAL (decl),
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+ align);
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+ /* Don't increase alignment too much for TLS variables - TLS space
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+ is too precious. */
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+ if (! DECL_THREAD_LOCAL_P (decl) || const_align <= BITS_PER_WORD)
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+ align = const_align;
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+ }
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#endif
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}
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