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# Fix PR rtl-optimization/60818, taken from the trunk.
gcc/
2017-04-04 Segher Boessenkool <segher@kernel.crashing.org>
PR rtl-optimization/60818
* simplify-rtx.c (simplify_binary_operation_1): Do not replace
a compare of comparisons with the thing compared if this results
in a different machine mode.
--- a/src/gcc/simplify-rtx.c 2017/04/03 22:57:32 246665
+++ b/src/gcc/simplify-rtx.c 2017/04/04 00:10:02 246666
@@ -2306,10 +2306,10 @@
return xop00;
if (REG_P (xop00) && REG_P (xop10)
- && GET_MODE (xop00) == GET_MODE (xop10)
&& REGNO (xop00) == REGNO (xop10)
- && GET_MODE_CLASS (GET_MODE (xop00)) == MODE_CC
- && GET_MODE_CLASS (GET_MODE (xop10)) == MODE_CC)
+ && GET_MODE (xop00) == mode
+ && GET_MODE (xop10) == mode
+ && GET_MODE_CLASS (mode) == MODE_CC)
return xop00;
}
break;
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