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riscv-gcc-1
Commit a7a4457e by Doug Evans
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* loop.c (strength_reduce): Avoid taking PATTERN of a label. 

From-SVN: r12965
parent 0002d808
Showing with 12 additions and 6 deletions
gcc/loop.c
......@@ -3952,12 +3952,18 @@ strength_reduce (scan_start, end, loop_top, insn_count,
auto_inc_opt = 1;
#ifdef HAVE_cc0
/* We can't put an insn immediately after one setting
cc0, or immediately before one using cc0. */
if ((auto_inc_opt == 1 && sets_cc0_p (PATTERN (v->insn)))
|| (auto_inc_opt == -1
&& sets_cc0_p (PATTERN (prev_nonnote_insn (v->insn)))))
auto_inc_opt = 0;
{
rtx prev;
/* We can't put an insn immediately after one setting
cc0, or immediately before one using cc0. */
if ((auto_inc_opt == 1 && sets_cc0_p (PATTERN (v->insn)))
|| (auto_inc_opt == -1
&& (prev = prev_nonnote_insn (v->insn)) != 0
&& GET_RTX_CLASS (GET_CODE (prev)) == 'i'
&& sets_cc0_p (PATTERN (prev))))
auto_inc_opt = 0;
}
#endif
if (auto_inc_opt)
......
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