diff options
| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-07-19 10:27:07 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-07-19 10:27:07 +0000 |
| commit | a5d536df523c382cc266ab846912060a2a888eca (patch) | |
| tree | 18a19d1d0d3ba0f9e6bb73f587b8903c2c74a669 /gcc | |
| parent | 02c01bafd50499be42e2bd94f35531c134d7c7e3 (diff) | |
| download | gcc-a5d536df523c382cc266ab846912060a2a888eca.tar.gz | |
PR tree-optimization/40676
* tree-ssa-dce.c (eliminate_unnecessary_stmts): Do renaming on all
virtual PHIs in empty BBs.
* gcc.c-torture/compile/pr40676.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@149789 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr40676.c | 33 | ||||
| -rw-r--r-- | gcc/tree-ssa-dce.c | 6 |
4 files changed, 48 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8ad42bf6ac5..c88b30b0eaa 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2009-07-19 Jan Hubicka <jh@suse.cz> + + PR tree-optimization/40676 + * tree-ssa-dce.c (eliminate_unnecessary_stmts): Do renaming on all + virtual PHIs in empty BBs. + 2009-07-18 Adam Nemet <anemet@caviumnetworks.com> * combine.c (make_compound_operation) <SUBREG>: If force_to_mode diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index b1f86982294..6951c22e5bc 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2009-07-19 Jan Hubicka <jh@suse.cz> + + PR tree-optimization/40676 + * gcc.c-torture/compile/pr40676.c: New testcase. + 2009-07-18 Adam Nemet <anemet@caviumnetworks.com> * gcc.target/mips/ext-2.c: New test. diff --git a/gcc/testsuite/gcc.c-torture/compile/pr40676.c b/gcc/testsuite/gcc.c-torture/compile/pr40676.c new file mode 100644 index 00000000000..b0426288292 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr40676.c @@ -0,0 +1,33 @@ +extern int f1(); +extern int f2(void*); +extern void* f3(int); +int xmsih; +typedef unsigned short XWCHAR; + +inline unsigned int xstrlenW( const XWCHAR *str ) +{ + const XWCHAR *s = str; + while (*s) s++; + return s - str; +} + + +static int msi_dialog_register_class( void ) +{ + int cls; + + if( !f2( &cls ) ) + return 0; + if( !f2( &cls ) ) + return 0; + xmsih = f1(); + if( !xmsih ) + return 0; + return 1; +} + +void *xmsi_dialog_create(const XWCHAR* szDialogName) +{ + msi_dialog_register_class(); + return f3(xstrlenW(szDialogName)); +} diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index fdfdda5e95f..86134ad0970 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -1137,7 +1137,8 @@ eliminate_unnecessary_stmts (void) for (bb = ENTRY_BLOCK_PTR->next_bb; bb != EXIT_BLOCK_PTR; bb = next_bb) { next_bb = bb->next_bb; - if (!(bb->flags & BB_REACHABLE)) + if (!TEST_BIT (bb_contains_live_stmts, bb->index) + || !(bb->flags & BB_REACHABLE)) { for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); gsi_next (&gsi)) if (!is_gimple_reg (gimple_phi_result (gsi_stmt (gsi)))) @@ -1159,7 +1160,8 @@ eliminate_unnecessary_stmts (void) if (found) mark_virtual_phi_result_for_renaming (gsi_stmt (gsi)); } - delete_basic_block (bb); + if (!(bb->flags & BB_REACHABLE)) + delete_basic_block (bb); } } } |