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| author | Richard Kenner <kenner@gcc.gnu.org> | 1992-12-12 17:50:59 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1992-12-12 17:50:59 -0500 |
| commit | 937868a2323ff9a28875811f30ada691bca25830 (patch) | |
| tree | d4f76e25175d7a0ca0fd631d1d1de76b66980588 /gcc | |
| parent | aca49971b61151ad6c0057c2e2087e99d19a1121 (diff) | |
| download | gcc-937868a2323ff9a28875811f30ada691bca25830.zip gcc-937868a2323ff9a28875811f30ada691bca25830.tar.gz gcc-937868a2323ff9a28875811f30ada691bca25830.tar.bz2 | |
(alpha_builtin_savregs): Correctly compute ARGSIZE and NREGS.
From-SVN: r2867
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/alpha/alpha.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c index 8c39b16..ca027ec 100644 --- a/gcc/config/alpha/alpha.c +++ b/gcc/config/alpha/alpha.c @@ -1013,7 +1013,7 @@ print_operand (file, x, code) } /* Do what is necessary for `va_start'. The argument is ignored; - We look at the current function to determine if stdargs or varargs + We look at the current function to determine if stdarg or varargs is used and fill in an initial va_list. A pointer to this constructor is returned. */ @@ -1023,9 +1023,9 @@ alpha_builtin_saveregs (arglist) { rtx block, addr, argsize; tree fntype = TREE_TYPE (current_function_decl); - int stdargs = (TYPE_ARG_TYPES (fntype) != 0 - && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype))) - != void_type_node)); + int stdarg = (TYPE_ARG_TYPES (fntype) != 0 + && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype))) + != void_type_node)); int nregs = current_function_args_info; /* If we have a variable-sized argument already, we will have used all @@ -1034,27 +1034,22 @@ alpha_builtin_saveregs (arglist) if (GET_CODE (current_function_arg_offset_rtx) != CONST_INT) { argsize = plus_constant (current_function_arg_offset_rtx, - ((6 - stdargs) * UNITS_PER_WORD - + UNITS_PER_WORD - 1)); + (6 * UNITS_PER_WORD + UNITS_PER_WORD - 1)); argsize = expand_shift (RSHIFT_EXPR, Pmode, argsize, build_int_2 (3, 0), argsize, 0); } else { - /* If we are using memory, deduct the stdarg adjustment from it, - otherwise from the number of registers. Then compute the current - argument number. */ - + /* Compute the number of args in memory and number of arguments already + processed. Then adjust the number of registers if this is stdarg. */ int memargs = ((INTVAL (current_function_arg_offset_rtx) + UNITS_PER_WORD - 1) / UNITS_PER_WORD); - if (memargs) - memargs -= stdargs; - else - nregs -= stdargs; - argsize = GEN_INT (MIN (nregs, 6) + memargs); + + if (nregs <= 6) + nregs -= stdarg; } /* Allocate the va_list constructor */ |