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21 lines
943 B
C
21 lines
943 B
C
--- cse.c.orig Fri Aug 8 08:30:25 1997
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+++ cse.c Mon Mar 20 13:29:11 2000
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@@ -7567,10 +7567,15 @@
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and that's just as good as a structure element
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in implying that we need not invalidate scalar variables.
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However, we must allow QImode aliasing of scalars, because the
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- ANSI C standard allows character pointers to alias anything. */
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+ ANSI C standard allows character pointers to alias anything.
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+ We must also allow AND addresses, because they may generate
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+ accesses outside the object being referenced. This is used to
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+ generate aligned addresses from unaligned adresses, e.g., the
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+ Alpha storeqi_unaligned pattern. */
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if (! ((MEM_IN_STRUCT_P (written)
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|| GET_CODE (XEXP (written, 0)) == PLUS)
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- && GET_MODE (written) != QImode))
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+ && GET_MODE (written) != QImode
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+ && GET_CODE (XEXP (written, 0)) != AND))
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writes_ptr->all = 1;
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writes_ptr->nonscalar = 1;
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}
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