diff options
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/gcc/expr.c b/gcc/expr.c index 141904f1231..ae25d40a681 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -1259,6 +1259,10 @@ emit_block_move (rtx x, rtx y, rtx size, enum block_op_methods method) static bool block_move_libcall_safe_for_call_parm (void) { +#if defined (REG_PARM_STACK_SPACE) + tree fn; +#endif + /* If arguments are pushed on the stack, then they're safe. */ if (PUSH_ARGS) return true; @@ -1266,13 +1270,10 @@ block_move_libcall_safe_for_call_parm (void) /* If registers go on the stack anyway, any argument is sure to clobber an outgoing argument. */ #if defined (REG_PARM_STACK_SPACE) - if (OUTGOING_REG_PARM_STACK_SPACE) - { - tree fn; - fn = emit_block_move_libcall_fn (false); - if (REG_PARM_STACK_SPACE (fn) != 0) - return false; - } + fn = emit_block_move_libcall_fn (false); + if (OUTGOING_REG_PARM_STACK_SPACE ((!fn ? NULL_TREE : TREE_TYPE (fn))) + && REG_PARM_STACK_SPACE (fn) != 0) + return false; #endif /* If any argument goes in memory, then it might clobber an outgoing |