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re PR target/19116 (-funsafe-math-optimizations make nan compares equal to one another (-finite-math-only should be doing that))

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2006-10-21  Richard Guenther  <rguenther@suse.de>

	PR target/19116
	* config/i386/i386.c (override_options): Do not set MASK_IEEE_FP
	if flag_unsafe_math_optimizations is specified.  We have
	flag_finite_math_only for that.
	* config/i386/i386.md (sqrtxf2): Do not require TARGET_IEEE_FP
	or flag_unsafe_math_optimizations.

From-SVN: r117930
This commit is contained in:
Richard Guenther 2006-10-21 10:40:57 +00:00 • committed by Richard Biener
parent 120a56cb67
commit 5a4171a01d
3 changed files with 11 additions and 3 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2006-10-21 Richard Guenther <rguenther@suse.de>
PR target/19116
* config/i386/i386.c (override_options): Do not set MASK_IEEE_FP
if flag_unsafe_math_optimizations is specified. We have
flag_finite_math_only for that.
* config/i386/i386.md (sqrtxf2): Do not require TARGET_IEEE_FP
or flag_unsafe_math_optimizations.
2006-10-21 Richard Guenther <rguenther@suse.de>
* builtins.c (fold_builtin_classify): Fix typo.

2
gcc/config/i386/i386.c
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@ -1847,7 +1847,7 @@ override_options (void)
/* If we're doing fast math, we don't care about comparison order
wrt NaNs. This lets us use a shorter comparison sequence. */
if (flag_unsafe_math_optimizations)
if (flag_finite_math_only)
target_flags &= ~MASK_IEEE_FP;
/* If the architecture always has an FPU, turn off NO_FANCY_MATH_387,

3
gcc/config/i386/i386.md
View file

@ -15560,8 +15560,7 @@
(define_insn "sqrtxf2"
[(set (match_operand:XF 0 "register_operand" "=f")
(sqrt:XF (match_operand:XF 1 "register_operand" "0")))]
"TARGET_USE_FANCY_MATH_387
&& (TARGET_IEEE_FP || flag_unsafe_math_optimizations) "
"TARGET_USE_FANCY_MATH_387"
"fsqrt"
[(set_attr "type" "fpspc")
(set_attr "mode" "XF")