From: Alan Modra Date: Wed, 6 Aug 2003 03:26:17 +0000 (+0000) Subject: calls.c (load_register_parameters): Arrange for call_fusage to report the whole regis... X-Git-Tag: releases/gcc-3.4.0~4371 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=980f6e8eaa6c9b50ab1649c0393be49223d1e2cd;p=thirdparty%2Fgcc.git 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 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ac596b0089f7..e3774ae70fa0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-08-06 Alan Modra + + * 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 * builtins.c (expand_builtin): When not optimizing, call the library diff --git a/gcc/calls.c b/gcc/calls.c index 26937c3775ba..bdb4288100f7 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -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 }