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| author | Brad Lucier <lucier@math.purdue.edu> | 2001-03-07 11:29:41 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2001-03-07 11:29:41 -0800 |
| commit | de6c59795844f185e1079034b9fa777fbc12ef5a (patch) | |
| tree | 996aa9dfa54be0d228dde6e7394f9adf66f7c76c /gcc/builtins.c | |
| parent | 6822468a694e59639c0f97975a2f48951501fd37 (diff) | |
| download | gcc-de6c59795844f185e1079034b9fa777fbc12ef5a.zip gcc-de6c59795844f185e1079034b9fa777fbc12ef5a.tar.gz gcc-de6c59795844f185e1079034b9fa777fbc12ef5a.tar.bz2 | |
Brad's -ffast-math breakup.
From-SVN: r40300
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 3dedc5b..8ccd092 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -1430,10 +1430,10 @@ expand_builtin_mathfn (exp, target, subtarget) return 0; } - /* Check the results by default. But if flag_fast_math is turned on, - then assume sqrt will always be called with valid arguments. */ + /* If errno must be maintained and if we are not allowing unsafe + math optimizations, check the result. */ - if (flag_errno_math && ! flag_fast_math) + if (flag_errno_math && ! flag_unsafe_math_optimizations) { rtx lab1; @@ -3329,8 +3329,9 @@ expand_builtin (exp, target, subtarget, mode, ignore) case BUILT_IN_SIN: case BUILT_IN_COS: - /* Treat these like sqrt, but only if the user asks for them. */ - if (! flag_fast_math) + /* Treat these like sqrt only if unsafe math optimizations are allowed, + because of possible accuracy problems. */ + if (! flag_unsafe_math_optimizations) break; case BUILT_IN_FSQRT: target = expand_builtin_mathfn (exp, target, subtarget); |