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| author | John David Anglin <danglin@gcc.gnu.org> | 2020-09-13 18:47:59 +0000 |
|---|---|---|
| committer | John David Anglin <danglin@gcc.gnu.org> | 2020-09-13 18:47:59 +0000 |
| commit | 2fd157813c4964033e156ccb7df8889cd2afee99 (patch) | |
| tree | dc630961840d3916fc66e1d8c05fca0c7e82b68d /gcc/config/pa | |
| parent | 5de41c886207a3a0ff1f44ce0a5a644e9d9a17f8 (diff) | |
| download | gcc-2fd157813c4964033e156ccb7df8889cd2afee99.zip gcc-2fd157813c4964033e156ccb7df8889cd2afee99.tar.gz gcc-2fd157813c4964033e156ccb7df8889cd2afee99.tar.bz2 | |
Improve costs for DImode shifts of interger constants.
2020-09-13 Roger Sayle <roger@nextmovesoftware.com>
gcc/ChangeLog
* config/pa/pa.c (hppa_rtx_costs) [ASHIFT, ASHIFTRT, LSHIFTRT]:
Provide accurate costs for DImode shifts of integer constants.
Diffstat (limited to 'gcc/config/pa')
| -rw-r--r-- | gcc/config/pa/pa.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c index a9223ab..210e44f 100644 --- a/gcc/config/pa/pa.c +++ b/gcc/config/pa/pa.c @@ -1630,13 +1630,16 @@ hppa_rtx_costs (rtx x, machine_mode mode, int outer_code, case ASHIFT: if (mode == DImode) { - if (TARGET_64BIT) - *total = COSTS_N_INSNS (3); - else if (REG_P (XEXP (x, 0)) && CONST_INT_P (XEXP (x, 1))) + if (REG_P (XEXP (x, 0)) && CONST_INT_P (XEXP (x, 1))) { - *total = COSTS_N_INSNS (2); + if (TARGET_64BIT) + *total = COSTS_N_INSNS (1); + else + *total = COSTS_N_INSNS (2); return true; } + else if (TARGET_64BIT) + *total = COSTS_N_INSNS (3); else if (speed) *total = COSTS_N_INSNS (13); else @@ -1661,13 +1664,16 @@ hppa_rtx_costs (rtx x, machine_mode mode, int outer_code, case ASHIFTRT: if (mode == DImode) { - if (TARGET_64BIT) - *total = COSTS_N_INSNS (3); - else if (REG_P (XEXP (x, 0)) && CONST_INT_P (XEXP (x, 1))) + if (REG_P (XEXP (x, 0)) && CONST_INT_P (XEXP (x, 1))) { - *total = COSTS_N_INSNS (2); + if (TARGET_64BIT) + *total = COSTS_N_INSNS (1); + else + *total = COSTS_N_INSNS (2); return true; } + else if (TARGET_64BIT) + *total = COSTS_N_INSNS (3); else if (speed) *total = COSTS_N_INSNS (14); else @@ -1692,13 +1698,16 @@ hppa_rtx_costs (rtx x, machine_mode mode, int outer_code, case LSHIFTRT: if (mode == DImode) { - if (TARGET_64BIT) - *total = COSTS_N_INSNS (2); - else if (REG_P (XEXP (x, 0)) && CONST_INT_P (XEXP (x, 1))) + if (REG_P (XEXP (x, 0)) && CONST_INT_P (XEXP (x, 1))) { - *total = COSTS_N_INSNS (2); + if (TARGET_64BIT) + *total = COSTS_N_INSNS (1); + else + *total = COSTS_N_INSNS (2); return true; } + else if (TARGET_64BIT) + *total = COSTS_N_INSNS (2); else if (speed) *total = COSTS_N_INSNS (12); else |