diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/gcse.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr45107.c | 13 |
4 files changed, 26 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 599176d..5e8721d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2010-07-28 Maxim Kuvyrkov <maxim@codesourcery.com> + + PR rtl-optimization/45107 + * gcse.c (hash_scan_set): Use max_distance for gcse-las. + 2010-07-28 Richard Guenther <rguenther@suse.de> * tree-ssa-ccp.c: Remove comment regarding STORE-CCP. @@ -1471,6 +1471,7 @@ hash_scan_set (rtx pat, rtx insn, struct hash_table_d *table) else if (flag_gcse_las && REG_P (src) && MEM_P (dest)) { unsigned int regno = REGNO (src); + int max_distance = 0; /* Do not do this for constant/copy propagation. */ if (! table->set_p @@ -1482,7 +1483,7 @@ hash_scan_set (rtx pat, rtx insn, struct hash_table_d *table) do that easily for EH edges so disable GCSE on these for now. */ && !can_throw_internal (insn) /* Is SET_DEST something we want to gcse? */ - && want_to_gcse_p (dest, NULL) + && want_to_gcse_p (dest, &max_distance) /* Don't CSE a nop. */ && ! set_noop_p (pat) /* Don't GCSE if it has attached REG_EQUIV note. @@ -1504,7 +1505,7 @@ hash_scan_set (rtx pat, rtx insn, struct hash_table_d *table) /* Record the memory expression (DEST) in the hash table. */ insert_expr_in_table (dest, GET_MODE (dest), insn, - antic_p, avail_p, 0, table); + antic_p, avail_p, max_distance, table); } } } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 21ca910..3dbe028 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2010-07-28 Maxim Kuvyrkov <maxim@codesourcery.com> + PR rtl-optimization/45107 + * gcc.dg/pr45107.c: New test. + +2010-07-28 Maxim Kuvyrkov <maxim@codesourcery.com> + PR rtl-optimization/45101 * gcc.dg/pr45101.c: New test. diff --git a/gcc/testsuite/gcc.dg/pr45107.c b/gcc/testsuite/gcc.dg/pr45107.c new file mode 100644 index 0000000..05dbec3 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr45107.c @@ -0,0 +1,13 @@ +/* PR rtl-optimization/45107 */ +/* { dg-do compile } */ +/* { dg-options "-Os -fgcse-las" } */ + +extern void bar(int *); + +int foo (int *p) +{ + int i = *p; + if (i != 1) + bar(&i); + *p = i; +} |