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| author | John David Anglin <dave.anglin@nrc-cnrc.gc.ca> | 2012-09-08 22:35:54 +0000 |
|---|---|---|
| committer | John David Anglin <danglin@gcc.gnu.org> | 2012-09-08 22:35:54 +0000 |
| commit | 259febfe6cabe29e30901960d11871740a5df680 (patch) | |
| tree | 53adb9d69c595e985a681f75809210f17a547320 | |
| parent | 4e5315e5cff61713c41cca6e0bb0f20d2d94b53b (diff) | |
| download | gcc-259febfe6cabe29e30901960d11871740a5df680.zip gcc-259febfe6cabe29e30901960d11871740a5df680.tar.gz gcc-259febfe6cabe29e30901960d11871740a5df680.tar.bz2 | |
pa.c (hppa_rtx_costs): Update costs for large integer modes.
* config/pa/pa.c (hppa_rtx_costs): Update costs for large integer modes.
From-SVN: r191102
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/pa/pa.c | 40 |
2 files changed, 36 insertions, 8 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cee1ea4..5626de2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2012-09-08 John David Anglin <dave.anglin@nrc-cnrc.gc.ca> + + * config/pa/pa.c (hppa_rtx_costs): Update costs for large integer modes. + 2012-09-08 Andi Kleen <ak@linux.intel.com> * gcc/lto/lto.c (do_whole_program_analysis): diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c index bb54c6e..cba8e78 100644 --- a/gcc/config/pa/pa.c +++ b/gcc/config/pa/pa.c @@ -1422,6 +1422,8 @@ static bool hppa_rtx_costs (rtx x, int code, int outer_code, int opno ATTRIBUTE_UNUSED, int *total, bool speed ATTRIBUTE_UNUSED) { + int factor; + switch (code) { case CONST_INT: @@ -1453,11 +1455,20 @@ hppa_rtx_costs (rtx x, int code, int outer_code, int opno ATTRIBUTE_UNUSED, case MULT: if (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT) - *total = COSTS_N_INSNS (3); - else if (TARGET_PA_11 && !TARGET_DISABLE_FPREGS && !TARGET_SOFT_FLOAT) - *total = COSTS_N_INSNS (8); + { + *total = COSTS_N_INSNS (3); + return true; + } + + /* A mode size N times larger than SImode needs O(N*N) more insns. */ + factor = GET_MODE_SIZE (GET_MODE (x)) / 4; + if (factor == 0) + factor = 1; + + if (TARGET_PA_11 && !TARGET_DISABLE_FPREGS && !TARGET_SOFT_FLOAT) + *total = factor * factor * COSTS_N_INSNS (8); else - *total = COSTS_N_INSNS (20); + *total = factor * factor * COSTS_N_INSNS (20); return true; case DIV: @@ -1471,15 +1482,28 @@ hppa_rtx_costs (rtx x, int code, int outer_code, int opno ATTRIBUTE_UNUSED, case UDIV: case MOD: case UMOD: - *total = COSTS_N_INSNS (60); + /* A mode size N times larger than SImode needs O(N*N) more insns. */ + factor = GET_MODE_SIZE (GET_MODE (x)) / 4; + if (factor == 0) + factor = 1; + + *total = factor * factor * COSTS_N_INSNS (60); return true; case PLUS: /* this includes shNadd insns */ case MINUS: if (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT) - *total = COSTS_N_INSNS (3); - else - *total = COSTS_N_INSNS (1); + { + *total = COSTS_N_INSNS (3); + return true; + } + + /* A size N times larger than UNITS_PER_WORD needs N times as + many insns, taking N times as long. */ + factor = GET_MODE_SIZE (GET_MODE (x)) / UNITS_PER_WORD; + if (factor == 0) + factor = 1; + *total = factor * COSTS_N_INSNS (1); return true; case ASHIFT: |