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re PR middle-end/56382 (FAIL: gcc.c-torture/compile/pr55921.c (internal compiler error))

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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.

From-SVN: r202179
This commit is contained in:
Eric Botcazou 2013-09-02 16:19:20 +00:00 committed by Eric Botcazou
parent 49322b127d
commit d617d2d806
2 changed files with 15 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
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

13
gcc/expr.c
View File

@ -3232,11 +3232,16 @@ emit_move_complex (enum machine_mode mode, rtx x, rtx y)
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)