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builtins.c (fold_builtin_cos): Use fold_strip_sign_ops().

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* builtins.c (fold_builtin_cos): Use fold_strip_sign_ops().
	(fold_builtin_hypot): Likewise.
	* fold-const.c (fold_strip_sign_ops): Handle "odd" builtins.
	
testsuite:
	* gcc.dg/builtins-20.c: Add more cases for stripping sign ops.

From-SVN: r118683
This commit is contained in:
Kaveh R. Ghazi 2006-11-11 04:05:14 +00:00 committed by Kaveh Ghazi
parent 345768ef3f
commit b81e7144aa
5 changed files with 109 additions and 18 deletions
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4
gcc/ChangeLog
View File

@ -1,5 +1,9 @@
2006-11-10 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* builtins.c (fold_builtin_cos): Use fold_strip_sign_ops().
(fold_builtin_hypot): Likewise.
* fold-const.c (fold_strip_sign_ops): Handle "odd" builtins.
* fold-const.c (negate_mathfn_p): Add BUILT_IN_ERF.
2006-11-10 Roger Sayle <roger@eyesopen.com>

29
gcc/builtins.c
View File

@ -7242,7 +7242,7 @@ static tree
fold_builtin_cos (tree arglist, tree type, tree fndecl)
{
tree arg = TREE_VALUE (arglist);
tree res;
tree res, narg;
if (!validate_arglist (arglist, REAL_TYPE, VOID_TYPE))
return NULL_TREE;
@ -7252,12 +7252,9 @@ fold_builtin_cos (tree arglist, tree type, tree fndecl)
return res;
/* Optimize cos(-x) into cos (x). */
if (TREE_CODE (arg) == NEGATE_EXPR)
{
tree args = build_tree_list (NULL_TREE,
TREE_OPERAND (arg, 0));
return build_function_call_expr (fndecl, args);
}
if ((narg = fold_strip_sign_ops (arg)))
return build_function_call_expr (fndecl,
build_tree_list (NULL_TREE, narg));
return NULL_TREE;
}
@ -7765,7 +7762,7 @@ fold_builtin_hypot (tree fndecl, tree arglist, tree type)
{
tree arg0 = TREE_VALUE (arglist);
tree arg1 = TREE_VALUE (TREE_CHAIN (arglist));
tree res;
tree res, narg0, narg1;
if (!validate_arglist (arglist, REAL_TYPE, REAL_TYPE, VOID_TYPE))
return NULL_TREE;
@ -7776,17 +7773,13 @@ fold_builtin_hypot (tree fndecl, tree arglist, tree type)
/* If either argument to hypot has a negate or abs, strip that off.
E.g. hypot(-x,fabs(y)) -> hypot(x,y). */
if (TREE_CODE (arg0) == NEGATE_EXPR || TREE_CODE (arg1) == NEGATE_EXPR
|| TREE_CODE (arg0) == ABS_EXPR || TREE_CODE (arg1) == ABS_EXPR)
narg0 = fold_strip_sign_ops (arg0);
narg1 = fold_strip_sign_ops (arg1);
if (narg0 || narg1)
{
tree narg0 = (TREE_CODE (arg0) == NEGATE_EXPR
|| TREE_CODE (arg0) == ABS_EXPR)
? TREE_OPERAND (arg0, 0) : arg0;
tree narg1 = (TREE_CODE (arg1) == NEGATE_EXPR
|| TREE_CODE (arg1) == ABS_EXPR)
? TREE_OPERAND (arg1, 0) : arg1;
tree narglist = tree_cons (NULL_TREE, narg0,
build_tree_list (NULL_TREE, narg1));
tree narglist = tree_cons (NULL_TREE, narg0 ? narg0 : arg0,
build_tree_list (NULL_TREE,
narg1 ? narg1 : arg1));
return build_function_call_expr (fndecl, narglist);
}

11
gcc/fold-const.c
View File

@ -13296,6 +13296,17 @@ fold_strip_sign_ops (tree exp)
arg1 ? arg1 : TREE_OPERAND (exp, 1));
break;
case CALL_EXPR:
/* Strip sign ops from the argument of "odd" math functions. */
if (negate_mathfn_p (builtin_mathfn_code (exp)))
{
arg0 = fold_strip_sign_ops (TREE_VALUE (TREE_OPERAND (exp, 1)));
if (arg0)
return build_function_call_expr (get_callee_fndecl (exp),
build_tree_list (NULL_TREE, arg0));
}
break;
default:
break;
}

2
gcc/testsuite/ChangeLog
View File

@ -1,5 +1,7 @@
2006-11-10 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* gcc.dg/builtins-20.c: Add more cases for stripping sign ops.
* gcc.dg/torture/builtin-symmetric-1.c: New test.
2006-11-10 Paul Thomas <pault@gcc.gnu.org>

81
gcc/testsuite/gcc.dg/builtins-20.c
View File

@ -38,6 +38,15 @@ void test1(double x)
if (cos(x) != cos(-x))
link_error ();
if (cos(x) != cos(fabs(x)))
link_error ();
if (cos(x) != cos(-fabs(x)))
link_error ();
if (cos(tan(x)) != cos(tan(-fabs(x))))
link_error ();
if (sin(x)/cos(x) != tan(x))
link_error ();
@ -65,6 +74,21 @@ void test2(double x, double y)
if (-sin(x-y) != sin(y-x))
link_error ();
if (cos(-x*y) != cos(x*y))
link_error ();
if (cos(x*-y) != cos(x*y))
link_error ();
if (cos(-x/y) != cos(x/y))
link_error ();
if (cos(x/-y) != cos(x/y))
link_error ();
if (cos(-fabs(tan(x/-y))) != cos(tan(x/y)))
link_error ();
if (hypot (x, 0) != fabs(x))
link_error ();
@ -103,6 +127,9 @@ void test2(double x, double y)
if (hypot (pure(x), -pure(x)) != fabs(pure(x)) * __builtin_sqrt(2))
link_error ();
if (hypot (tan(-x), tan(-fabs(y))) != hypot (tan(x), tan(y)))
link_error ();
}
void test1f(float x)
@ -110,6 +137,15 @@ void test1f(float x)
if (cosf(x) != cosf(-x))
link_error ();
if (cosf(x) != cosf(fabsf(x)))
link_error ();
if (cosf(x) != cosf(-fabsf(x)))
link_error ();
if (cosf(tanf(x)) != cosf(tanf(-fabsf(x))))
link_error ();
#ifdef HAVE_C99_RUNTIME
if (sinf(x)/cosf(x) != tanf(x))
link_error ();
@ -139,6 +175,21 @@ void test2f(float x, float y)
if (-sinf(x-y) != sinf(y-x))
link_error ();
if (cosf(-x*y) != cosf(x*y))
link_error ();
if (cosf(x*-y) != cosf(x*y))
link_error ();
if (cosf(-x/y) != cosf(x/y))
link_error ();
if (cosf(x/-y) != cosf(x/y))
link_error ();
if (cosf(-fabsf(tanf(x/-y))) != cosf(tanf(x/y)))
link_error ();
if (hypotf (x, 0) != fabsf(x))
link_error ();
@ -177,6 +228,9 @@ void test2f(float x, float y)
if (hypotf (puref(x), -puref(x)) != fabsf(puref(x)) * __builtin_sqrtf(2))
link_error ();
if (hypotf (tanf(-x), tanf(-fabsf(y))) != hypotf (tanf(x), tanf(y)))
link_error ();
}
@ -185,6 +239,15 @@ void test1l(long double x)
if (cosl(x) != cosl(-x))
link_error ();
if (cosl(x) != cosl(fabsl(x)))
link_error ();
if (cosl(x) != cosl(-fabsl(x)))
link_error ();
if (cosl(tanl(x)) != cosl(tanl(-fabsl(x))))
link_error ();
#ifdef HAVE_C99_RUNTIME
if (sinl(x)/cosl(x) != tanl(x))
link_error ();
@ -214,6 +277,21 @@ void test2l(long double x, long double y)
if (-sinl(x-y) != sinl(y-x))
link_error ();
if (cosl(-x*y) != cosl(x*y))
link_error ();
if (cosl(x*-y) != cosl(x*y))
link_error ();
if (cosl(-x/y) != cosl(x/y))
link_error ();
if (cosl(x/-y) != cosl(x/y))
link_error ();
if (cosl(-fabsl(tanl(x/-y))) != cosl(tanl(x/y)))
link_error ();
if (hypotl (x, 0) != fabsl(x))
link_error ();
@ -252,6 +330,9 @@ void test2l(long double x, long double y)
if (hypotl (purel(x), -purel(x)) != fabsl(purel(x)) * __builtin_sqrtl(2))
link_error ();
if (hypotl (tanl(-x), tanl(-fabsl(y))) != hypotl (tanl(x), tanl(y)))
link_error ();
}
int main()