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| author | Janis Johnson <janis@gcc.gnu.org> | 2001-12-04 00:47:14 +0000 |
|---|---|---|
| committer | Janis Johnson <janis@gcc.gnu.org> | 2001-12-04 00:47:14 +0000 |
| commit | 21b8482ae8289fccb3ddaaa74532995aa3f27c56 (patch) | |
| tree | 75d518e5186a2da27e1bd86593dcab821b360f44 /gcc/rtl.def | |
| parent | 44eca121fcf46c61cc2dd36bccb3bd5235b30006 (diff) | |
| download | gcc-21b8482ae8289fccb3ddaaa74532995aa3f27c56.zip gcc-21b8482ae8289fccb3ddaaa74532995aa3f27c56.tar.gz gcc-21b8482ae8289fccb3ddaaa74532995aa3f27c56.tar.bz2 | |
rtl.def (PREFETCH): New rtx code.
* rtl.def (PREFETCH): New rtx code.
* doc/rtl.texi (PREFETCH): Add documentation.
* function.c (instantiate_virtual_regs_1): Handle PREFETCH rtx.
* rtlanal.c (reg_referenced_p): Ditto.
* sched-vis.c (print_exp): Ditto.
* ssa-dce.c (find_inherently_necessary): Ditto.
From-SVN: r47580
Diffstat (limited to 'gcc/rtl.def')
| -rw-r--r-- | gcc/rtl.def | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/rtl.def b/gcc/rtl.def index 6c887bc..786b940 100644 --- a/gcc/rtl.def +++ b/gcc/rtl.def @@ -514,6 +514,17 @@ DEF_RTL_EXPR(ADDR_VEC, "addr_vec", "E", 'x') DEF_RTL_EXPR(ADDR_DIFF_VEC, "addr_diff_vec", "eEee0", 'x') +/* Memory prefetch, with attributes supported on some targets. + Operand 1 is the address of the memory to fetch. + Operand 2 is 1 for a write access, 0 otherwise. + Operand 3 is the level of temporal locality; 0 means there is no + temporal locality and 1, 2, and 3 are for increasing levels of temporal + locality. + + The attributes specified by operands 2 and 3 are ignored for targets + whose prefetch instructions do not support them. */ +DEF_RTL_EXPR(PREFETCH, "prefetch", "eee", 'x') + /* ---------------------------------------------------------------------- At the top level of an instruction (perhaps under PARALLEL). ---------------------------------------------------------------------- */ |