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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/target.h | |
| 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/target.h')
| -rw-r--r-- | gcc/target.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/target.h b/gcc/target.h index 41ae3e3..e4e82a3 100644 --- a/gcc/target.h +++ b/gcc/target.h @@ -97,6 +97,9 @@ struct _dep; /* This is defined in ddg.h . */ struct ddg; +/* This is defined in cfgloop.h . */ +struct loop; + /* Assembler instructions for creating various kinds of integer object. */ struct asm_int_op @@ -637,6 +640,9 @@ struct gcc_target /* Return true if the target supports conditional execution. */ bool (* have_conditional_execution) (void); + /* Return a new value for loop unroll size. */ + unsigned (* loop_unroll_adjust) (unsigned nunroll, struct loop *loop); + /* True if the constant X cannot be placed in the constant pool. */ bool (* cannot_force_const_mem) (rtx); |