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| author | Geoffrey Keating <geoffk@redhat.com> | 2001-11-09 23:06:04 +0000 |
|---|---|---|
| committer | Geoffrey Keating <geoffk@gcc.gnu.org> | 2001-11-09 23:06:04 +0000 |
| commit | ff6051b76e5f031a6bfc0c1f25a51034df1e4902 (patch) | |
| tree | 1c401918c7bcbdded039a4ef338ec2822a5c81af /gcc/flow.c | |
| parent | 322fe6e185b1a4470827b5ffbbda9fb1ecf0ea4b (diff) | |
| download | gcc-ff6051b76e5f031a6bfc0c1f25a51034df1e4902.zip gcc-ff6051b76e5f031a6bfc0c1f25a51034df1e4902.tar.gz gcc-ff6051b76e5f031a6bfc0c1f25a51034df1e4902.tar.bz2 | |
flow.c (insn_dead_p): Allow for AUTO_INC notes all the time.
* flow.c (insn_dead_p): Allow for AUTO_INC notes all the time.
In testsuite/:
* gcc.c-torture/execute/20011109-2.c: New test.
From-SVN: r46901
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 23 |
1 files changed, 10 insertions, 13 deletions
@@ -1892,21 +1892,18 @@ insn_dead_p (pbi, x, call_ok, notes) enum rtx_code code = GET_CODE (x); #ifdef AUTO_INC_DEC - /* If flow is invoked after reload, we must take existing AUTO_INC - expresions into account. */ - if (reload_completed) + /* As flow is invoked after combine, we must take existing AUTO_INC + expressions into account. */ + for (; notes; notes = XEXP (notes, 1)) { - for (; notes; notes = XEXP (notes, 1)) + if (REG_NOTE_KIND (notes) == REG_INC) { - if (REG_NOTE_KIND (notes) == REG_INC) - { - int regno = REGNO (XEXP (notes, 0)); - - /* Don't delete insns to set global regs. */ - if ((regno < FIRST_PSEUDO_REGISTER && global_regs[regno]) - || REGNO_REG_SET_P (pbi->reg_live, regno)) - return 0; - } + int regno = REGNO (XEXP (notes, 0)); + + /* Don't delete insns to set global regs. */ + if ((regno < FIRST_PSEUDO_REGISTER && global_regs[regno]) + || REGNO_REG_SET_P (pbi->reg_live, regno)) + return 0; } } #endif |