ia64.c (hfa_element_mode): Return false for zero-sized top-level aggregates.
* config/ia64/ia64.c (hfa_element_mode): Return false for zero-sized top-level aggregates. From-SVN: r92741
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@ -1,3 +1,8 @@
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2004-12-30 Richard Henderson <rth@redhat.com>
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* config/ia64/ia64.c (hfa_element_mode): Return false for
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zero-sized top-level aggregates.
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2004-12-30 Jan Hubicka <jh@suse.cz>
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2004-12-30 Jan Hubicka <jh@suse.cz>
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PR target/18019
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PR target/18019
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@ -186,7 +186,7 @@ static rtx gen_movdi_x (rtx, rtx, rtx);
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static rtx gen_fr_spill_x (rtx, rtx, rtx);
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static rtx gen_fr_spill_x (rtx, rtx, rtx);
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static rtx gen_fr_restore_x (rtx, rtx, rtx);
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static rtx gen_fr_restore_x (rtx, rtx, rtx);
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static enum machine_mode hfa_element_mode (tree, int);
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static enum machine_mode hfa_element_mode (tree, bool);
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static void ia64_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode,
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static void ia64_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode,
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tree, int *, int);
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tree, int *, int);
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static bool ia64_pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode,
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static bool ia64_pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode,
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@ -2968,10 +2968,14 @@ ia64_setup_incoming_varargs (CUMULATIVE_ARGS *cum, enum machine_mode mode,
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An aggregate is a homogeneous floating point aggregate is if all
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An aggregate is a homogeneous floating point aggregate is if all
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fields/elements in it have the same floating point type (e.g,
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fields/elements in it have the same floating point type (e.g,
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SFmode). 128-bit quad-precision floats are excluded. */
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SFmode). 128-bit quad-precision floats are excluded.
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Variable sized aggregates should never arrive here, since we should
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have already decided to pass them by reference. Top-level zero-sized
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aggregates are excluded because our parallels crash the middle-end. */
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static enum machine_mode
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static enum machine_mode
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hfa_element_mode (tree type, int nested)
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hfa_element_mode (tree type, bool nested)
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{
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{
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enum machine_mode element_mode = VOIDmode;
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enum machine_mode element_mode = VOIDmode;
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enum machine_mode mode;
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enum machine_mode mode;
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@ -2979,6 +2983,9 @@ hfa_element_mode (tree type, int nested)
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int know_element_mode = 0;
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int know_element_mode = 0;
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tree t;
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tree t;
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if (!nested && (!TYPE_SIZE (type) || integer_zerop (TYPE_SIZE (type))))
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return VOIDmode;
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switch (code)
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switch (code)
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{
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{
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case VOID_TYPE: case INTEGER_TYPE: case ENUMERAL_TYPE:
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case VOID_TYPE: case INTEGER_TYPE: case ENUMERAL_TYPE:
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