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From-SVN: r1560
This commit is contained in:
Richard Stallman 1992-07-11 22:23:31 +00:00
parent db7e523939
commit e7a522bae6
1 changed files with 7 additions and 2 deletions
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9
gcc/cse.c
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@ -3736,9 +3736,14 @@ simplify_binary_operation (code, mode, op0, op1)
case DIV:
if (op1 == CONST1_RTX (mode))
return op0;
else if (op0 == CONST0_RTX (mode)
&& ! side_effects_p (op1))
/* In IEEE floating point, 0/x is not always 0. */
if ((TARGET_FLOAT_FORMAT != IEEE_FLOAT_FORMAT
|| GET_MODE_CLASS (mode) == MODE_INT)
&& op0 == CONST0_RTX (mode)
&& ! side_effects_p (op1))
return op0;
#if 0 /* Turned off till an expert says this is a safe thing to do. */
#if ! defined (REAL_IS_NOT_DOUBLE) || defined (REAL_ARITHMETIC)
/* Change division by a constant into multiplication. */