+2013-09-02 Eric Botcazou <ebotcazou@adacore.com>
+
+ PR middle-end/56382
+ * expr.c (emit_move_complex): Do not move complex FP values as parts if
+ the source or the destination is a single hard register.
+
2013-09-02 Richard Biener <rguenther@suse.de>
PR middle-end/57511
if (push_operand (x, mode))
return emit_move_complex_push (mode, x, y);
- /* See if we can coerce the target into moving both values at once. */
-
- /* Move floating point as parts. */
+ /* See if we can coerce the target into moving both values at once, except
+ for floating point where we favor moving as parts if this is easy. */
if (GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT
- && optab_handler (mov_optab, GET_MODE_INNER (mode)) != CODE_FOR_nothing)
+ && optab_handler (mov_optab, GET_MODE_INNER (mode)) != CODE_FOR_nothing
+ && !(REG_P (x)
+ && HARD_REGISTER_P (x)
+ && hard_regno_nregs[REGNO(x)][mode] == 1)
+ && !(REG_P (y)
+ && HARD_REGISTER_P (y)
+ && hard_regno_nregs[REGNO(y)][mode] == 1))
try_int = false;
/* Not possible if the values are inherently not adjacent. */
else if (GET_CODE (x) == CONCAT || GET_CODE (y) == CONCAT)