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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2014-04-23 15:17:54 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2014-04-23 15:17:54 +0000 |
| commit | ba9b1a639fb8dfcf7d54700905fd1ba58d20f739 (patch) | |
| tree | 077fa5686b7c88606c9f0005913c67cd2423f14b | |
| parent | da4cfeacb0a152f4cc3afa7473ccad1b8455eae2 (diff) | |
| download | gcc-ba9b1a639fb8dfcf7d54700905fd1ba58d20f739.zip gcc-ba9b1a639fb8dfcf7d54700905fd1ba58d20f739.tar.gz gcc-ba9b1a639fb8dfcf7d54700905fd1ba58d20f739.tar.bz2 | |
[ARM] Handle FMA code in rtx costs.
* config/arm/arm.c (arm_new_rtx_costs): Handle FMA.
From-SVN: r209701
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/arm/arm.c | 30 |
2 files changed, 34 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c79f26a..5f86e3e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2014-04-23 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + * config/arm/arm.c (arm_new_rtx_costs): Handle FMA. + 2014-04-23 Richard Biener <rguenther@suse.de> * Makefile.in (OBJS): Remove loop-unswitch.o. diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 88d957a..42df6fe 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -10635,6 +10635,36 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code, *cost = LIBCALL_COST (1); return false; + case FMA: + if (TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_FMA) + { + rtx op0 = XEXP (x, 0); + rtx op1 = XEXP (x, 1); + rtx op2 = XEXP (x, 2); + + *cost = COSTS_N_INSNS (1); + + /* vfms or vfnma. */ + if (GET_CODE (op0) == NEG) + op0 = XEXP (op0, 0); + + /* vfnms or vfnma. */ + if (GET_CODE (op2) == NEG) + op2 = XEXP (op2, 0); + + *cost += rtx_cost (op0, FMA, 0, speed_p); + *cost += rtx_cost (op1, FMA, 1, speed_p); + *cost += rtx_cost (op2, FMA, 2, speed_p); + + if (speed_p) + *cost += extra_cost->fp[mode ==DFmode].fma; + + return true; + } + + *cost = LIBCALL_COST (3); + return false; + case FIX: case UNSIGNED_FIX: if (TARGET_HARD_FLOAT) |