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| author | Georg-Johann Lay <avr@gjlay.de> | 2024-08-10 10:05:55 +0200 |
|---|---|---|
| committer | Georg-Johann Lay <avr@gjlay.de> | 2024-08-10 10:18:11 +0200 |
| commit | 09a87ea666b28845a702d28cec6fee945b422dcd (patch) | |
| tree | 0b14e85f026e00c215baab3e17d7464dc3cf6b63 | |
| parent | 8cc67b520968ca9a13fd96896522aa66e39a99e2 (diff) | |
| download | gcc-09a87ea666b28845a702d28cec6fee945b422dcd.zip gcc-09a87ea666b28845a702d28cec6fee945b422dcd.tar.gz gcc-09a87ea666b28845a702d28cec6fee945b422dcd.tar.bz2 | |
AVR: ad target/113934 - Add option -mlra to enable LRA.
PR target/113934
gcc/
* config/avr/avr.opt (-mlra): New target option.
* config/avr/avr.cc (avr_use_lra_p): New function.
(TARGET_LRA_P): Use it.
(avr_hard_regno_mode_ok) [lra]: Don't disallow 4-byte modes for X.
| -rw-r--r-- | gcc/config/avr/avr.cc | 15 | ||||
| -rw-r--r-- | gcc/config/avr/avr.opt | 4 |
2 files changed, 17 insertions, 2 deletions
diff --git a/gcc/config/avr/avr.cc b/gcc/config/avr/avr.cc index 5cfd67a..27df4bc 100644 --- a/gcc/config/avr/avr.cc +++ b/gcc/config/avr/avr.cc @@ -14180,7 +14180,9 @@ avr_hard_regno_mode_ok (unsigned int regno, machine_mode mode) address registers is extreme stress test for reload. */ if (GET_MODE_SIZE (mode) >= 4 - && regno >= REG_X) + && regno >= REG_X + // This problem only concerned the old reload. + && ! avr_lra_p) return false; /* All modes larger than 8 bits should start in an even register. */ @@ -16682,6 +16684,15 @@ avr_float_lib_compare_returns_bool (machine_mode mode, enum rtx_code) return false; } + +/* Implement `TARGET_LRA_P'. */ + +static bool +avr_use_lra_p () +{ + return avr_lra_p; +} + /* Initialize the GCC target structure. */ @@ -16824,7 +16835,7 @@ avr_float_lib_compare_returns_bool (machine_mode mode, enum rtx_code) #define TARGET_CONVERT_TO_TYPE avr_convert_to_type #undef TARGET_LRA_P -#define TARGET_LRA_P hook_bool_void_false +#define TARGET_LRA_P avr_use_lra_p #undef TARGET_ADDR_SPACE_SUBSET_P #define TARGET_ADDR_SPACE_SUBSET_P avr_addr_space_subset_p diff --git a/gcc/config/avr/avr.opt b/gcc/config/avr/avr.opt index c3ca837..947489e 100644 --- a/gcc/config/avr/avr.opt +++ b/gcc/config/avr/avr.opt @@ -18,6 +18,10 @@ ; along with GCC; see the file COPYING3. If not see ; <http://www.gnu.org/licenses/>. +mlra +Target Var(avr_lra_p) UInteger Init(0) Optimization +Usa LRA for reload instead of the old reload framework. This option is experimental, and it may be removed in future versions of the compiler. + mcall-prologues Target Mask(CALL_PROLOGUES) Optimization Optimization. Use subroutines for function prologues and epilogues. |