diff options
| author | Paul Koning <ni1d@arrl.net> | 2018-07-14 15:15:47 -0400 |
|---|---|---|
| committer | Paul Koning <pkoning@gcc.gnu.org> | 2018-07-14 15:15:47 -0400 |
| commit | ba8d277ab0053f5ccae84081343f791c15a36452 (patch) | |
| tree | 5b87dcd11cc3958f0159796a6b6559ce00654f86 | |
| parent | 025acb59146aa0f25a9ff4d86dd53e2421ed0a09 (diff) | |
| download | gcc-ba8d277ab0053f5ccae84081343f791c15a36452.zip gcc-ba8d277ab0053f5ccae84081343f791c15a36452.tar.gz gcc-ba8d277ab0053f5ccae84081343f791c15a36452.tar.bz2 | |
* config/pdp11/pdp11.c (pdp11_rtx_costs): Bugfixes.
From-SVN: r262659
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/config/pdp11/pdp11.c | 18 |
2 files changed, 22 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 14bfd9e..776a3c4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2018-07-14 Paul Koning <ni1d@arrl.net> + + * config/pdp11/pdp11.c (pdp11_rtx_costs): Bugfixes. + 2018-07-13 Jan Hubicka <hubicka@ucw.cz> * lto-streamer-out.c (copy_function_or_variable): Dump info about diff --git a/gcc/config/pdp11/pdp11.c b/gcc/config/pdp11/pdp11.c index 834c4ea..1bcdaed 100644 --- a/gcc/config/pdp11/pdp11.c +++ b/gcc/config/pdp11/pdp11.c @@ -1014,6 +1014,7 @@ pdp11_rtx_costs (rtx x, machine_mode mode, int outer_code, const int code = GET_CODE (x); const int asize = (mode == QImode) ? 2 : GET_MODE_SIZE (mode); rtx src, dest; + const char *fmt; switch (code) { @@ -1035,12 +1036,29 @@ pdp11_rtx_costs (rtx x, machine_mode mode, int outer_code, *total = pdp11_addr_cost (x, mode, ADDR_SPACE_GENERIC, speed); return true; } + if (GET_RTX_LENGTH (code) == 0) + { + if (speed) + *total = 0; + else + *total = 2; + return true; + } /* Pick up source and dest. We don't necessarily use the standard recursion in rtx_costs to figure the cost, because that would count the destination operand twice for three-operand insns. Also, this way we can catch special cases like move of zero, or add one. */ + fmt = GET_RTX_FORMAT (code); + if (fmt[0] != 'e' || (GET_RTX_LENGTH (code) > 1 && fmt[1] != 'e')) + { + if (speed) + *total = 0; + else + *total = 2; + return true; + } if (GET_RTX_LENGTH (code) > 1) src = XEXP (x, 1); dest = XEXP (x, 0); |