Set power10 fusion if -mtune=power10.
In doing the patch for zero cycle moves for switch statements and indirect
jumps, I noticed the fusion support is only done if -mcpu=power10. This option
enables power10 fusion if we use -mtune=power10.
I have built and run the testsuites on little endian power9 and power10 systems
with no regressions. Can I install this patch?
2021-11-19 Michael Meissner <meiss...@the-meissners.org>
* config/rs6000/rs6000.c (rs6000_option_override_internal): Enable
power10 fusion if -mtune=power10.
(rs6000_opt_masks): Add power10 fusion options.
---
gcc/config/rs6000/rs6000.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 6780304a5eb..8531cef0337 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4469,35 +4469,36 @@ rs6000_option_override_internal (bool global_init_p)
if (TARGET_POWER10 && (rs6000_isa_flags_explicit & OPTION_MASK_MMA) == 0)
rs6000_isa_flags |= OPTION_MASK_MMA;
- if (TARGET_POWER10
+ /* Enable power10 tuning if either -mcpu=power10 or -mtune=power10. */
+ if ((TARGET_POWER10 || rs6000_tune == PROCESSOR_POWER10)
&& (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION) == 0)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION;
- if (TARGET_POWER10 &&
+ if (TARGET_P10_FUSION &&
(rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION_LD_CMPI) == 0)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION_LD_CMPI;
- if (TARGET_POWER10
+ if (TARGET_P10_FUSION
&& (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION_2LOGICAL) == 0)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION_2LOGICAL;
- if (TARGET_POWER10
+ if (TARGET_P10_FUSION
&& (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION_LOGADD) == 0)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION_LOGADD;
- if (TARGET_POWER10
+ if (TARGET_P10_FUSION
&& (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION_ADDLOG) == 0)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION_ADDLOG;
- if (TARGET_POWER10
+ if (TARGET_P10_FUSION
&& (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION_2ADD) == 0)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION_2ADD;
- if (TARGET_POWER10
+ if (TARGET_P10_FUSION
&& (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION_2STORE) == 0)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION_2STORE;
- if (TARGET_POWER10
+ if (TARGET_P10_FUSION
&& (rs6000_isa_flags_explicit & OPTION_MASK_P10_FUSION_ZERO_CYCLE) == 0)
rs6000_isa_flags |= OPTION_MASK_P10_FUSION_ZERO_CYCLE;
@@ -24292,6 +24293,14 @@ static struct rs6000_opt_mask const rs6000_opt_masks[]
=
{ "power9-misc", OPTION_MASK_P9_MISC, false, true },
{ "power9-vector", OPTION_MASK_P9_VECTOR, false, true },
{ "power10-fusion", OPTION_MASK_P10_FUSION, false, true },
+ { "power10-fusion-ld-cmpi", OPTION_MASK_P10_FUSION_LD_CMPI, false, true },
+ { "power10-fusion-2logical", OPTION_MASK_P10_FUSION_2LOGICAL,false, true },
+ { "power10-fusion-logical-add", OPTION_MASK_P10_FUSION_LOGADD,false, true },
+ { "power10-fusion-add-logical", OPTION_MASK_P10_FUSION_ADDLOG,false, true },
+ { "power10-fusion-2add", OPTION_MASK_P10_FUSION_2ADD, false, true },
+ { "power10-fusion-2store", OPTION_MASK_P10_FUSION_2STORE, false, true },
+ { "power10-fusion-zero-cycle", OPTION_MASK_P10_FUSION_ZERO_CYCLE,
+ false, true },
{ "powerpc-gfxopt", OPTION_MASK_PPC_GFXOPT, false, true },
{ "powerpc-gpopt", OPTION_MASK_PPC_GPOPT, false, true },
{ "prefixed", OPTION_MASK_PREFIXED, false,
true },
--
2.31.1
--
Michael Meissner, IBM
PO Box 98, Ayer, Massachusetts, USA, 01432
email: meiss...@linux.ibm.com
