From ba8d277ab0053f5ccae84081343f791c15a36452 Mon Sep 17 00:00:00 2001 From: Paul Koning Date: Sat, 14 Jul 2018 15:15:47 -0400 Subject: [PATCH] * config/pdp11/pdp11.c (pdp11_rtx_costs): Bugfixes. From-SVN: r262659 --- gcc/ChangeLog | 4 ++++ gcc/config/pdp11/pdp11.c | 18 ++++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 14bfd9ea69d..776a3c4434d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2018-07-14 Paul Koning + + * config/pdp11/pdp11.c (pdp11_rtx_costs): Bugfixes. + 2018-07-13 Jan Hubicka * 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 834c4ea7518..1bcdaed79dc 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); -- 2.30.2