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avr.c (avr_out_compare): Use const0_rtx instead of 0 when testing for compares against constants of the...

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* config/avr/avr.c (avr_out_compare): Use const0_rtx instead of 0
	when testing for compares against constants of the form 0xabab.

From-SVN: r238879
This commit is contained in:
Georg-Johann Lay 2016-07-29 16:09:39 +00:00 committed by Georg-Johann Lay
parent 61c73a7fed
commit d51553e083
2 changed files with 6 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2016-07-29 Georg-Johann Lay <avr@gjlay.de>
* config/avr/avr.c (avr_out_compare): Use const0_rtx instead of 0
when testing for compares against constants of the form 0xabab.
2016-07-29 Bin Cheng <bin.cheng@arm.com>
PR tree-optimization/57558

2
gcc/config/avr/avr.c
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@ -5357,7 +5357,7 @@ avr_out_compare (rtx_insn *insn, rtx *xop, int *plen)
the constant is of the form 0xabab. */
if (n_bytes == 2
&& xval != 0
&& xval != const0_rtx
&& test_hard_reg_class (LD_REGS, xreg)
&& compare_eq_p (insn)
&& !reg_unused_after (insn, xreg))