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| author | Alexander Monakov <amonakov@ispras.ru> | 2010-12-15 16:08:41 +0300 |
|---|---|---|
| committer | Alexander Monakov <amonakov@gcc.gnu.org> | 2010-12-15 16:08:41 +0300 |
| commit | 9d0dcda15ccb43b5b24b370e793142736d5742d3 (patch) | |
| tree | 488325a3428239da3b6c7029b84a92513a232674 /gcc | |
| parent | 3ca4d07dffe49b9c51f713cb78c785ecb185b04a (diff) | |
| download | gcc-9d0dcda15ccb43b5b24b370e793142736d5742d3.zip gcc-9d0dcda15ccb43b5b24b370e793142736d5742d3.tar.gz gcc-9d0dcda15ccb43b5b24b370e793142736d5742d3.tar.bz2 | |
re PR rtl-optimization/46649 (ICE: in move_bb_info, at sel-sched-ir.c:5080 with -fschedule-insns -fselective-scheduling)
PR rtl-optimization/46649
* sel-sched-ir.c (purge_empty_blocks): Unconditionally skip the first
basic block in the region.
testsuite:
* g++.dg/opt/pr46649.C: New.
From-SVN: r167854
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/sel-sched-ir.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/opt/pr46649.C | 9 |
4 files changed, 23 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 68ac27b..9832ed1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2010-12-15 Alexander Monakov <amonakov@ispras.ru> + + PR rtl-optimization/46649 + * sel-sched-ir.c (purge_empty_blocks): Unconditionally skip the first + basic block in the region. + 2010-12-15 Joseph Myers <joseph@codesourcery.com> * config/stormy16/stormy16.h (LINK_SPEC, WCHAR_TYPE): Define. diff --git a/gcc/sel-sched-ir.c b/gcc/sel-sched-ir.c index 468dfd7..43619d9 100644 --- a/gcc/sel-sched-ir.c +++ b/gcc/sel-sched-ir.c @@ -3766,10 +3766,10 @@ tidy_control_flow (basic_block xbb, bool full_tidying) void purge_empty_blocks (void) { - /* Do not attempt to delete preheader. */ - int i = sel_is_loop_preheader_p (BASIC_BLOCK (BB_TO_BLOCK (0))) ? 1 : 0; + int i; - while (i < current_nr_blocks) + /* Do not attempt to delete the first basic block in the region. */ + for (i = 1; i < current_nr_blocks; ) { basic_block b = BASIC_BLOCK (BB_TO_BLOCK (i)); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index dc836ec..d61278c 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2010-12-15 Alexander Monakov <amonakov@ispras.ru> + + PR rtl-optimization/46649 + * g++.dg/opt/pr46649.C: New. + 2010-12-15 Dave Korn <dave.korn.cygwin@gmail.com> PR testsuite/46938 diff --git a/gcc/testsuite/g++.dg/opt/pr46649.C b/gcc/testsuite/g++.dg/opt/pr46649.C new file mode 100644 index 0000000..1428e8b --- /dev/null +++ b/gcc/testsuite/g++.dg/opt/pr46649.C @@ -0,0 +1,9 @@ +// { dg-do compile { target powerpc*-*-* ia64-*-* x86_64-*-* } } +// { dg-options "-fschedule-insns -fselective-scheduling" } + +void foo () +{ + for (;;) + for (;;({break;})) + ; +} |