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| author | Jim Wilson <wilson@gcc.gnu.org> | 1994-02-27 15:19:49 -0800 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1994-02-27 15:19:49 -0800 |
| commit | d391688a17b00a0a7ec88b986fd84749266a39c7 (patch) | |
| tree | 848942c6dfeaa7c8229edca4155bde0fd6bc02da | |
| parent | d58b6986f4e552292ab24b8ac2f0d66b0cea083f (diff) | |
| download | gcc-d391688a17b00a0a7ec88b986fd84749266a39c7.zip gcc-d391688a17b00a0a7ec88b986fd84749266a39c7.tar.gz gcc-d391688a17b00a0a7ec88b986fd84749266a39c7.tar.bz2 | |
(expand_call): Set nregs to -1 for BLKmode parameter,
then before move_block_to_reg call set it to the type size.
From-SVN: r6660
| -rw-r--r-- | gcc/calls.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index 056ec5a..fd32beb 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -1787,8 +1787,7 @@ expand_call (exp, target, ignore) we just use a normal move insn. */ nregs = (partial ? partial : (TYPE_MODE (TREE_TYPE (args[i].tree_value)) == BLKmode - ? ((int_size_in_bytes (TREE_TYPE (args[i].tree_value)) - + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD) + ? -1 : 0)); /* If simple case, just do move. If normal partial, store_one_arg @@ -1809,9 +1808,16 @@ expand_call (exp, target, ignore) #endif else if (args[i].partial == 0 || args[i].pass_on_stack) - move_block_to_reg (REGNO (reg), - validize_mem (args[i].value), nregs, - args[i].mode); + { + /* This value might be zero, if the argument is a zero size + structure with no fields, so we can't use it to set nregs + above. */ + nregs = ((int_size_in_bytes (TREE_TYPE (args[i].tree_value)) + + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD); + move_block_to_reg (REGNO (reg), + validize_mem (args[i].value), nregs, + args[i].mode); + } push_to_sequence (use_insns); if (nregs == 0) |