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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2015-11-10 17:29:46 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2015-11-10 17:29:46 +0000 |
| commit | 6a9ee02f7afa32a1bded5d4d0644ac1b02064148 (patch) | |
| tree | e6ef0e746a890fa07e3ba05f86607d2ffe30695e /gcc/config/arm | |
| parent | aad146c36f23de1338a53336941a8495b3750cd9 (diff) | |
| download | gcc-6a9ee02f7afa32a1bded5d4d0644ac1b02064148.zip gcc-6a9ee02f7afa32a1bded5d4d0644ac1b02064148.tar.gz gcc-6a9ee02f7afa32a1bded5d4d0644ac1b02064148.tar.bz2 | |
[ARM] Fix costing of vmul+vcvt combine pattern
* config/arm/arm.c (arm_new_rtx_costs, FIX case): Handle
combine_vcvtf2i pattern.
From-SVN: r230116
Diffstat (limited to 'gcc/config/arm')
| -rw-r--r-- | gcc/config/arm/arm.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index f5c8825..736e6c8f 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -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)); |