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| author | Richard Henderson <rth@cygnus.com> | 1999-03-11 06:02:42 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 1999-03-11 06:02:42 -0800 |
| commit | 827e80cc8b2870fe81e6c7857ce5d8eb78edc59e (patch) | |
| tree | a75e6c2302d98a23a7946256a85846e6cfa8e5bd /gcc | |
| parent | a7adf08e8429685a68f3b2629806ff2c03e781a5 (diff) | |
| download | gcc-827e80cc8b2870fe81e6c7857ce5d8eb78edc59e.zip gcc-827e80cc8b2870fe81e6c7857ce5d8eb78edc59e.tar.gz gcc-827e80cc8b2870fe81e6c7857ce5d8eb78edc59e.tar.bz2 | |
* alpha.md (ev5_e0): Conflict loads and stores.
From-SVN: r25705
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 2 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.md | 9 |
2 files changed, 9 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 21a9c22..f9e698a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -3,6 +3,8 @@ Thu Mar 11 14:00:58 1999 Richard Henderson <rth@cygnus.com> * alpha.h (HARD_REGNO_MODE_OK): Disallow QI/HImode in fp regs. (MODES_TIEABLE_P): Update. + * alpha.md (ev5_e0): Conflict loads and stores. + Thu Mar 11 13:55:52 1999 Richard Henderson <rth@cygnus.com> * machmode.h (smallest_mode_for_size): Prototype. diff --git a/gcc/config/alpha/alpha.md b/gcc/config/alpha/alpha.md index 82c1089..55bdc11 100644 --- a/gcc/config/alpha/alpha.md +++ b/gcc/config/alpha/alpha.md @@ -155,13 +155,18 @@ ; Memory takes at least 2 clocks. Return one from here and fix up with ; user-defined latencies in adjust_cost. -; ??? How to: "An instruction of class LD cannot be issued in the _second_ -; cycle after an instruction of class ST is issued." (define_function_unit "ev5_ebox" 2 0 (and (eq_attr "cpu" "ev5") (eq_attr "type" "ild,fld,ldsym")) 1 1) +; Loads can dual issue with one another, but loads and stores do not mix. +(define_function_unit "ev5_e0" 1 0 + (and (eq_attr "cpu" "ev5") + (eq_attr "type" "ild,fld,ldsym")) + 1 1 + [(eq_attr "type" "ist,fst")]) + ; Stores, shifts, multiplies can only issue to E0 (define_function_unit "ev5_e0" 1 0 (and (eq_attr "cpu" "ev5") |