From 8df63efa77a00e164cf9a72379d338fcd21d92ca Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Tue, 8 Jul 2003 09:26:27 +0200 Subject: unroll.c (reg_dead_after_loop): Check for reg in REG_EQUAL and REG_EQUIV notes as well. * unroll.c (reg_dead_after_loop): Check for reg in REG_EQUAL and REG_EQUIV notes as well. * g++.dg/opt/strength-reduce.C: New test. From-SVN: r69076 --- gcc/unroll.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'gcc/unroll.c') diff --git a/gcc/unroll.c b/gcc/unroll.c index 955136e..e557cb2 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -2899,11 +2899,15 @@ reg_dead_after_loop (const struct loop *loop, rtx reg) code = GET_CODE (insn); if (GET_RTX_CLASS (code) == 'i') { - rtx set; + rtx set, note; if (reg_referenced_p (reg, PATTERN (insn))) return 0; + note = find_reg_equal_equiv_note (insn); + if (note && reg_overlap_mentioned_p (reg, XEXP (note, 0))) + return 0; + set = single_set (insn); if (set && rtx_equal_p (SET_DEST (set), reg)) break; -- cgit v1.1