PR target/5362

[pf3gnuchains/gcc-fork.git] / gcc / convert.c

diff --git a/gcc/convert.c b/gcc/convert.c
index 77907ba..e98b657 100644 (file)
--- a/gcc/convert.c
+++ b/gcc/convert.c
@@ -1,6 +1,6 @@
 /* Utility routines for data type conversion for GCC.
    Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1997, 1998,
-   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -139,40 +139,45 @@ convert_to_real (tree type, tree expr)
       switch (fcode)
         {
 #define CASE_MATHFN(FN) case BUILT_IN_##FN: case BUILT_IN_##FN##L:
-         CASE_MATHFN (ACOS)
-         CASE_MATHFN (ACOSH)
-         CASE_MATHFN (ASIN)
-         CASE_MATHFN (ASINH)
-         CASE_MATHFN (ATAN)
-         CASE_MATHFN (ATANH)
-         CASE_MATHFN (CBRT)
-         CASE_MATHFN (COS)
          CASE_MATHFN (COSH)
-         CASE_MATHFN (ERF)
-         CASE_MATHFN (ERFC)
          CASE_MATHFN (EXP)
          CASE_MATHFN (EXP10)
          CASE_MATHFN (EXP2)
-         CASE_MATHFN (EXPM1)
-         CASE_MATHFN (FABS)
+         CASE_MATHFN (EXPM1)
          CASE_MATHFN (GAMMA)
          CASE_MATHFN (J0)
          CASE_MATHFN (J1)
          CASE_MATHFN (LGAMMA)
-         CASE_MATHFN (LOG)
-         CASE_MATHFN (LOG10)
-         CASE_MATHFN (LOG1P)
-         CASE_MATHFN (LOG2)
-         CASE_MATHFN (LOGB)
          CASE_MATHFN (POW10)
-         CASE_MATHFN (SIN)
          CASE_MATHFN (SINH)
-         CASE_MATHFN (SQRT)
-         CASE_MATHFN (TAN)
-         CASE_MATHFN (TANH)
          CASE_MATHFN (TGAMMA)
          CASE_MATHFN (Y0)
          CASE_MATHFN (Y1)
+           /* The above functions may set errno differently with float
+              input or output so this transformation is not safe with
+              -fmath-errno.  */
+           if (flag_errno_math)
+             break;
+         CASE_MATHFN (ACOS)
+         CASE_MATHFN (ACOSH)
+         CASE_MATHFN (ASIN)
+         CASE_MATHFN (ASINH)
+         CASE_MATHFN (ATAN)
+         CASE_MATHFN (ATANH)
+         CASE_MATHFN (CBRT)
+         CASE_MATHFN (COS)
+         CASE_MATHFN (ERF)
+         CASE_MATHFN (ERFC)
+         CASE_MATHFN (FABS)
+         CASE_MATHFN (LOG)
+         CASE_MATHFN (LOG10)
+         CASE_MATHFN (LOG2)
+         CASE_MATHFN (LOG1P)
+         CASE_MATHFN (LOGB)
+         CASE_MATHFN (SIN)
+         CASE_MATHFN (SQRT)
+         CASE_MATHFN (TAN)
+         CASE_MATHFN (TANH)
 #undef CASE_MATHFN
            {
              tree arg0 = strip_float_extensions (CALL_EXPR_ARG (expr, 0));