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[ARM] Fix costing of vmul+vcvt combine pattern

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* config/arm/arm.c (arm_new_rtx_costs, FIX case): Handle
	combine_vcvtf2i pattern.

From-SVN: r230116
This commit is contained in:
Kyrylo Tkachov 2015-11-10 17:29:46 +00:00 • committed by Kyrylo Tkachov
parent aad146c36f
commit 6a9ee02f7a
2 changed files with 22 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-11-10 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/arm/arm.c (arm_new_rtx_costs, FIX case): Handle
combine_vcvtf2i pattern.
2015-11-10 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/arm/arm.c (neon_valid_immediate): Remove integer

17
gcc/config/arm/arm.c
View file

@ -11049,6 +11049,23 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
case UNSIGNED_FIX:
if (TARGET_HARD_FLOAT)
{
/* The *combine_vcvtf2i reduces a vmul+vcvt into
a vcvt fixed-point conversion. */
if (code == FIX && mode == SImode
&& GET_CODE (XEXP (x, 0)) == FIX
&& GET_MODE (XEXP (x, 0)) == SFmode
&& GET_CODE (XEXP (XEXP (x, 0), 0)) == MULT
&& vfp3_const_double_for_bits (XEXP (XEXP (XEXP (x, 0), 0), 1))
> 0)
{
if (speed_p)
*cost += extra_cost->fp[0].toint;
*cost += rtx_cost (XEXP (XEXP (XEXP (x, 0), 0), 0), mode,
code, 0, speed_p);
return true;
}
if (GET_MODE_CLASS (mode) == MODE_INT)
{
mode = GET_MODE (XEXP (x, 0));