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(simplify_binary_operation): Reject CCmode in A & (~A) -> 0. 

Also fix typos in previous change.

From-SVN: r4295
This commit is contained in:
Richard Stallman 1993-05-01 16:55:51 +00:00
parent a878dab7ef
commit 709ab4fc49
1 changed files with 5 additions and 4 deletions
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9
gcc/cse.c
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@ -3599,7 +3599,7 @@ simplify_binary_operation (code, mode, op0, op1)
if (((GET_CODE (op0) == NOT && rtx_equal_p (XEXP (op0, 0), op1))
|| (GET_CODE (op1) == NOT && rtx_equal_p (XEXP (op1, 0), op0)))
&& ! side_effects_p (op0)
&& mode == CCmode)
&& mode != CCmode)
return constm1_rtx;
break;
@ -3610,7 +3610,7 @@ simplify_binary_operation (code, mode, op0, op1)
&& (INTVAL (op1) & GET_MODE_MASK (mode)) == GET_MODE_MASK (mode))
return gen_rtx (NOT, mode, op0);
if (op0 == op1 && ! side_effects_p (op0)
&& mode == CCmode)
&& mode != CCmode)
return const0_rtx;
break;
@ -3621,12 +3621,13 @@ simplify_binary_operation (code, mode, op0, op1)
&& (INTVAL (op1) & GET_MODE_MASK (mode)) == GET_MODE_MASK (mode))
return op0;
if (op0 == op1 && ! side_effects_p (op0)
&& mode == CCmode)
&& mode != CCmode)
return op0;
/* A & (~A) -> 0 */
if (((GET_CODE (op0) == NOT && rtx_equal_p (XEXP (op0, 0), op1))
|| (GET_CODE (op1) == NOT && rtx_equal_p (XEXP (op1, 0), op0)))
&& ! side_effects_p (op0))
&& ! side_effects_p (op0)
&& mode != CCmode)
return const0_rtx;
break;