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Fixed altivec vararg problem. 

Approved by Aldy Hernandez.

From-SVN: r81635
This commit is contained in:
Fariborz Jahanian 2004-05-07 23:00:39 +00:00 committed by Fariborz Jahanian
parent f7dbd2895e
commit 36a454e1f1
2 changed files with 34 additions and 5 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2004-05-07 Fariborz Jahanian <fjahanian@apple.com>
* config/rs6000/rs6000.c (rs6000_mixed_function_arg):
Generate appropriate parallels for vector arguments
passed to vararg functions. (function_arg): make the call
to rs6000_mixed_function_arg for vector args as needed.
2004-05-07 Richard Sandiford <rsandifo@redhat.com>
* config/mips/mips.c (mips_va_arg): Fix calculation of osize for

33
gcc/config/rs6000/rs6000.c
View File

@ -4344,8 +4344,28 @@ rs6000_mixed_function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode,
+ align_words),
const0_rtx)));
}
else if (mode == BLKmode && align_words <= (GP_ARG_NUM_REG - 1))
else if (ALTIVEC_VECTOR_MODE (mode) && align_words == GP_ARG_NUM_REG - 2)
{
/* Varargs vector regs must be saved in R9-R10. */
return gen_rtx_PARALLEL (mode,
gen_rtvec (3,
gen_rtx_EXPR_LIST (VOIDmode,
NULL_RTX, const0_rtx),
gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_REG (SImode,
GP_ARG_MIN_REG
+ align_words),
const0_rtx),
gen_rtx_EXPR_LIST (VOIDmode,
gen_rtx_REG (SImode,
GP_ARG_MIN_REG
+ align_words + 1),
GEN_INT (4))));
}
else if ((mode == BLKmode || ALTIVEC_VECTOR_MODE (mode))
&& align_words <= (GP_ARG_NUM_REG - 1))
{
/* AltiVec vector regs are saved in R5-R8. */
int k;
int size = int_size_in_bytes (type);
int no_units = ((size - 1) / 4) + 1;
@ -4362,9 +4382,8 @@ rs6000_mixed_function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode,
+ align_words + k),
k == 0 ? const0_rtx : GEN_INT (k*4));
return gen_rtx_PARALLEL (BLKmode, gen_rtvec_v (k, rtlvec));
}
return gen_rtx_PARALLEL (mode, gen_rtvec_v (k, rtlvec));
}
return NULL_RTX;
}
@ -4482,7 +4501,11 @@ function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode,
is either wholly in GPRs or half in GPRs and half not. */
part_mode = DImode;
return gen_rtx_REG (part_mode, GP_ARG_MIN_REG + align_words);
if (TARGET_32BIT
&& (TARGET_POWERPC64 || (align_words == GP_ARG_NUM_REG - 2)))
return rs6000_mixed_function_arg (cum, part_mode, type, align_words);
else
return gen_rtx_REG (part_mode, GP_ARG_MIN_REG + align_words);
}
}
else if (TARGET_SPE_ABI && TARGET_SPE && SPE_VECTOR_MODE (mode))