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| author | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2014-07-21 12:33:40 +0200 |
|---|---|---|
| committer | Christoph Muellner <christoph.muellner@theobroma-systems.com> | 2018-04-27 12:16:41 +0200 |
| commit | 7c9039cf2c981fe243d2807ce4305f30555c5da3 (patch) | |
| tree | e2ecae533ae9f08ddcf51624b7398ccfa77b52c0 /gcc/tree-ssa-loop-prefetch.c | |
| parent | 36989845c3814cb0fbb441eaca21039785fd54bc (diff) | |
Adding -fnoalias to delcare non-aliasing on function level.
This allows optimization by assuring the compiler that
pointers within the given function don't alias.
The optimizations within this patch are:
* pass_uninline_innermost_loops (new lowering pass)
Uninline the innermost loop if noalias is enabled, by moving it
into a separate function.
* pass_peel_last_iteration (new optimization pass)
Peel the last loop iteration if noalias is enabled.
Diffstat (limited to 'gcc/tree-ssa-loop-prefetch.c')
| -rw-r--r-- | gcc/tree-ssa-loop-prefetch.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/tree-ssa-loop-prefetch.c b/gcc/tree-ssa-loop-prefetch.c index 339eeafcfee3..5613eff983c3 100644 --- a/gcc/tree-ssa-loop-prefetch.c +++ b/gcc/tree-ssa-loop-prefetch.c @@ -158,7 +158,7 @@ along with GCC; see the file COPYING3. If not see /* True if read can be prefetched by a write prefetch. */ #ifndef READ_CAN_USE_WRITE_PREFETCH -#define READ_CAN_USE_WRITE_PREFETCH 0 +#define READ_CAN_USE_WRITE_PREFETCH 1 #endif /* The size of the block loaded by a single prefetch. Usually, this is @@ -172,7 +172,7 @@ along with GCC; see the file COPYING3. If not see /* Do we have a forward hardware sequential prefetching? */ #ifndef HAVE_FORWARD_PREFETCH -#define HAVE_FORWARD_PREFETCH 0 +#define HAVE_FORWARD_PREFETCH 1 #endif /* Do we have a backward hardware sequential prefetching? */ |