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calls.c (load_register_parameters): Arrange for call_fusage to report the whole register as used when... 

* calls.c (load_register_parameters): Arrange for call_fusage to
	report the whole register as used when shifting to the msb.

From-SVN: r70201
This commit is contained in:
Alan Modra 2003-08-06 03:26:17 +00:00 committed by Alan Modra
parent e7cca7f486
commit 980f6e8eaa
2 changed files with 15 additions and 5 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-08-06 Alan Modra <amodra@bigpond.net.au>
* calls.c (load_register_parameters): Arrange for call_fusage to
report the whole register as used when shifting to the msb.
2003-08-05 Roger Sayle <roger@eyesopen.com>
* builtins.c (expand_builtin): When not optimizing, call the library

15
gcc/calls.c
View File

@ -1633,13 +1633,18 @@ load_register_parameters (struct arg_data *args, int num_actuals,
&& (args[i].locate.where_pad
== (BYTES_BIG_ENDIAN ? upward : downward)))
{
rtx ri = gen_rtx_REG (word_mode, REGNO (reg));
rtx x;
int shift = (UNITS_PER_WORD - size) * BITS_PER_UNIT;
x = expand_binop (word_mode, ashl_optab, ri,
GEN_INT (shift), ri, 1, OPTAB_WIDEN);
if (x != ri)
emit_move_insn (ri, x);
/* Assigning REG here rather than a temp makes CALL_FUSAGE
report the whole reg as used. Strictly speaking, the
call only uses SIZE bytes at the msb end, but it doesn't
seem worth generating rtl to say that. */
reg = gen_rtx_REG (word_mode, REGNO (reg));
x = expand_binop (word_mode, ashl_optab, reg,
GEN_INT (shift), reg, 1, OPTAB_WIDEN);
if (x != reg)
emit_move_insn (reg, x);
}
#endif
}