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(immed_real_const_1): Check explicitly for NaNs. 

From-SVN: r4626
This commit is contained in:
Richard Stallman 1993-06-03 22:53:46 +00:00
parent 0a8305859d
commit 12194c388f
1 changed files with 5 additions and 1 deletions
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6
gcc/varasm.c
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@ -1418,7 +1418,11 @@ immed_real_const_1 (d, mode)
/* Avoid REAL_VALUES_EQUAL here in order to distinguish minus zero. */
if (!bcmp (&dconst0, &d, sizeof d))
return CONST0_RTX (mode);
else if (REAL_VALUES_EQUAL (dconst1, d))
/* Check for NaN first, because some ports (specifically the i386) do not
emit correct ieee-fp code by default, and thus will generate a core
dump here if we pass a NaN to REAL_VALUES_EQUAL and if REAL_VALUES_EQUAL
does a floating point comparison. */
else if (! REAL_VALUE_ISNAN (d) && REAL_VALUES_EQUAL (dconst1, d))
return CONST1_RTX (mode);
if (sizeof u == 2 * sizeof (HOST_WIDE_INT))