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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2010-04-08 15:07:57 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2010-04-08 15:07:57 +0000 |
| commit | 40ac4f73faa256e049279c1611d47a685ff7f370 (patch) | |
| tree | 0ebeefa37492fc33063a9f55bc090391a092d0fd /gcc/loop-unroll.c | |
| parent | 07c60ef701e0fe0c65f0186bd521ee83b6c24c3c (diff) | |
| download | gcc-40ac4f73faa256e049279c1611d47a685ff7f370.zip gcc-40ac4f73faa256e049279c1611d47a685ff7f370.tar.gz gcc-40ac4f73faa256e049279c1611d47a685ff7f370.tar.bz2 | |
Implement target hook for loop unrolling
2010-04-08 Christian Borntraeger <borntraeger@de.ibm.com>
Wolfgang Gellerich <gellerich@de.ibm.com>
Implement target hook for loop unrolling
* target.h (loop_unroll_adjust): Add a new target hook function.
* target-def.h (TARGET_LOOP_UNROLL_ADJUST): Likewise.
* doc/tm.texi (TARGET_LOOP_UNROLL_ADJUST): Document it.
* config/s390/s390.c (TARGET_LOOP_UNROLL_ADJUST): Define it.
(s390_loop_unroll_adjust): Implement the new target hook for s390.
* loop-unroll.c (decide_unroll_runtime_iterations): Call loop unroll target hook
(decide_unroll_stupid): Likewise.
Co-Authored-By: Wolfgang Gellerich <gellerich@de.ibm.com>
From-SVN: r158132
Diffstat (limited to 'gcc/loop-unroll.c')
| -rw-r--r-- | gcc/loop-unroll.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/loop-unroll.c b/gcc/loop-unroll.c index 231d12d..8ea449d 100644 --- a/gcc/loop-unroll.c +++ b/gcc/loop-unroll.c @@ -33,6 +33,7 @@ along with GCC; see the file COPYING3. If not see #include "expr.h" #include "hashtab.h" #include "recog.h" +#include "target.h" /* This pass performs loop unrolling and peeling. We only perform these optimizations on innermost loops (with single exception) because @@ -826,6 +827,9 @@ decide_unroll_runtime_iterations (struct loop *loop, int flags) if (nunroll > (unsigned) PARAM_VALUE (PARAM_MAX_UNROLL_TIMES)) nunroll = PARAM_VALUE (PARAM_MAX_UNROLL_TIMES); + if (targetm.loop_unroll_adjust) + nunroll = targetm.loop_unroll_adjust (nunroll, loop); + /* Skip big loops. */ if (nunroll <= 1) { @@ -1366,6 +1370,9 @@ decide_unroll_stupid (struct loop *loop, int flags) if (nunroll > (unsigned) PARAM_VALUE (PARAM_MAX_UNROLL_TIMES)) nunroll = PARAM_VALUE (PARAM_MAX_UNROLL_TIMES); + if (targetm.loop_unroll_adjust) + nunroll = targetm.loop_unroll_adjust (nunroll, loop); + /* Skip big loops. */ if (nunroll <= 1) { |