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| author | Andreas Krebbel <Andreas.Krebbel@de.ibm.com> | 2009-09-07 10:30:32 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2009-09-07 10:30:32 +0000 |
| commit | 3fce100b4014ea58b55e5f8b6a8475b6eff3b3e9 (patch) | |
| tree | 179ca9694e2adeee4f8201d3c4d57be345602003 /gcc/doc | |
| parent | 2dcbb2c0bf2fcdfec60dab2105ccd93815a30005 (diff) | |
| download | gcc-3fce100b4014ea58b55e5f8b6a8475b6eff3b3e9.zip gcc-3fce100b4014ea58b55e5f8b6a8475b6eff3b3e9.tar.gz gcc-3fce100b4014ea58b55e5f8b6a8475b6eff3b3e9.tar.bz2 | |
rtl.h (PREFETCH_SCHEDULE_BARRIER_P): New macro.
2009-09-07 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* rtl.h (PREFETCH_SCHEDULE_BARRIER_P): New macro.
* sched-deps.c (sched_analyze_2): Make prefetches a hard barrier
when volatile flag is set.
* doc/rtl.texi (PREFETCH_SCHEDULE_BARRIER_P): Add documentation pieces.
From-SVN: r151475
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/rtl.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi index 79baa10..ba72b48 100644 --- a/gcc/doc/rtl.texi +++ b/gcc/doc/rtl.texi @@ -882,6 +882,14 @@ Stored in the @code{volatil} field and printed as @samp{/v}. Most uses of @code{SYMBOL_REF_FLAG} are historic and may be subsumed by @code{SYMBOL_REF_FLAGS}. Certainly use of @code{SYMBOL_REF_FLAGS} is mandatory if the target requires more than one bit of storage. + +@findex PREFETCH_SCHEDULE_BARRIER_P +@cindex @code{prefetch} and @samp{/v} +@cindex @code{volatile}, in @code{prefetch} +@item PREFETCH_SCHEDULE_BARRIER_P (@var{x}) +In a @code{prefetch}, indicates that the prefetch is a scheduling barrier. +No other INSNs will be moved over it. +Stored in the @code{volatil} field and printed as @samp{/v}. @end table These are the fields to which the above macros refer: @@ -1034,6 +1042,9 @@ In an @code{insn}, 1 means the insn has been deleted. In @code{label_ref} and @code{reg_label} expressions, 1 means a reference to a non-local label. +In @code{prefetch} expressions, 1 means that the containing insn is a +scheduling barrier. + In an RTL dump, this flag is represented as @samp{/v}. @end table |