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fold-const.c (fold_binary_loc): Move Optimize root(x)*root(y) as root(x*y) to match.pd. 

2015-08-26  Naveen H.S  <Naveen.Hurugalawadi@caviumnetworks.com>

	* fold-const.c (fold_binary_loc) : Move Optimize 
	root(x)*root(y)	as root(x*y) to match.pd.
	Move Optimize expN(x)*expN(y) as expN(x+y) to match.pd.
	Move Optimize pow(x,y)*pow(x,z) as pow(x,y+z) to match.pd.
	Move Optimize a/root(b/c) into a*root(c/b) to match.pd.
	Move Optimize x/expN(y) into x*expN(-y) to match.pd.

	* match.pd (mult (root:s @0) (root:s @1)): New simplifier.
	(mult (POW:s @0 @1) (POW:s @0 @2)) : New simplifier.
	(mult (exps:s @0) (exps:s @1)) : New simplifier.
	(rdiv @0 (root:s (rdiv:s @1 @2))) : New simplifier.
	(rdiv @0 (exps:s @1)) : New simplifier.

From-SVN: r227207
This commit is contained in:
Naveen H.S 2015-08-26 03:39:17 +00:00 committed by Naveen H.S
parent 6031a5e32c
commit 3540164033
3 changed files with 41 additions and 82 deletions
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14
gcc/ChangeLog
View File

@ -1,3 +1,17 @@
2015-08-26 Naveen H.S <Naveen.Hurugalawadi@caviumnetworks.com>
* fold-const.c (fold_binary_loc) : Move Optimize
root(x)*root(y) as root(x*y) to match.pd.
Move Optimize expN(x)*expN(y) as expN(x+y) to match.pd.
Move Optimize pow(x,y)*pow(x,z) as pow(x,y+z) to match.pd.
Move Optimize a/root(b/c) into a*root(c/b) to match.pd.
Move Optimize x/expN(y) into x*expN(-y) to match.pd.
* match.pd (mult (root:s @0) (root:s @1)): New simplifier.
(mult (POW:s @0 @1) (POW:s @0 @2)) : New simplifier.
(mult (exps:s @0) (exps:s @1)) : New simplifier.
(rdiv @0 (root:s (rdiv:s @1 @2))) : New simplifier.
(rdiv @0 (exps:s @1)) : New simplifier.
2015-08-25 Joseph Myers <joseph@codesourcery.com>
* gcc.c (driver::finalize): Only assign to extra_specs if

79
gcc/fold-const.c
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@ -9947,51 +9947,6 @@ fold_binary_loc (location_t loc,
if (flag_unsafe_math_optimizations)
{
enum built_in_function fcode0 = builtin_mathfn_code (arg0);
enum built_in_function fcode1 = builtin_mathfn_code (arg1);
/* Optimizations of root(...)*root(...). */
if (fcode0 == fcode1 && BUILTIN_ROOT_P (fcode0))
{
tree rootfn, arg;
tree arg00 = CALL_EXPR_ARG (arg0, 0);
tree arg10 = CALL_EXPR_ARG (arg1, 0);
/* Optimize root(x)*root(y) as root(x*y). */
rootfn = TREE_OPERAND (CALL_EXPR_FN (arg0), 0);
arg = fold_build2_loc (loc, MULT_EXPR, type, arg00, arg10);
return build_call_expr_loc (loc, rootfn, 1, arg);
}
/* Optimize expN(x)*expN(y) as expN(x+y). */
if (fcode0 == fcode1 && BUILTIN_EXPONENT_P (fcode0))
{
tree expfn = TREE_OPERAND (CALL_EXPR_FN (arg0), 0);
tree arg = fold_build2_loc (loc, PLUS_EXPR, type,
CALL_EXPR_ARG (arg0, 0),
CALL_EXPR_ARG (arg1, 0));
return build_call_expr_loc (loc, expfn, 1, arg);
}
/* Optimizations of pow(...)*pow(...). */
if ((fcode0 == BUILT_IN_POW && fcode1 == BUILT_IN_POW)
|| (fcode0 == BUILT_IN_POWF && fcode1 == BUILT_IN_POWF)
|| (fcode0 == BUILT_IN_POWL && fcode1 == BUILT_IN_POWL))
{
tree arg00 = CALL_EXPR_ARG (arg0, 0);
tree arg01 = CALL_EXPR_ARG (arg0, 1);
tree arg10 = CALL_EXPR_ARG (arg1, 0);
tree arg11 = CALL_EXPR_ARG (arg1, 1);
/* Optimize pow(x,y)*pow(x,z) as pow(x,y+z). */
if (operand_equal_p (arg00, arg10, 0))
{
tree powfn = TREE_OPERAND (CALL_EXPR_FN (arg0), 0);
tree arg = fold_build2_loc (loc, PLUS_EXPR, type,
arg01, arg11);
return build_call_expr_loc (loc, powfn, 2, arg00, arg);
}
}
/* Canonicalize x*x as pow(x,2.0), which is expanded as x*x. */
if (!in_gimple_form
@ -10403,40 +10358,6 @@ fold_binary_loc (location_t loc,
TREE_OPERAND (arg1, 0));
}
if (flag_unsafe_math_optimizations)
{
enum built_in_function fcode1 = builtin_mathfn_code (arg1);
/* Optimize a/root(b/c) into a*root(c/b). */
if (BUILTIN_CBRT_P (fcode1))
{
tree rootarg = CALL_EXPR_ARG (arg1, 0);
if (TREE_CODE (rootarg) == RDIV_EXPR)
{
tree rootfn = TREE_OPERAND (CALL_EXPR_FN (arg1), 0);
tree b = TREE_OPERAND (rootarg, 0);
tree c = TREE_OPERAND (rootarg, 1);
tree tmp = fold_build2_loc (loc, RDIV_EXPR, type, c, b);
tmp = build_call_expr_loc (loc, rootfn, 1, tmp);
return fold_build2_loc (loc, MULT_EXPR, type, arg0, tmp);
}
}
/* Optimize x/expN(y) into x*expN(-y). */
if (BUILTIN_EXPONENT_P (fcode1))
{
tree expfn = TREE_OPERAND (CALL_EXPR_FN (arg1), 0);
tree arg = negate_expr (CALL_EXPR_ARG (arg1, 0));
arg1 = build_call_expr_loc (loc,
expfn, 1,
fold_convert_loc (loc, type, arg));
return fold_build2_loc (loc, MULT_EXPR, type, arg0, arg1);
}
}
return NULL_TREE;
case TRUNC_DIV_EXPR:

30
gcc/match.pd
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@ -2014,11 +2014,28 @@ along with GCC; see the file COPYING3. If not see
(if (!HONOR_SNANS (type))
@0))
/* Simplify sqrt(x) * sqrt(y) -> sqrt(x*y). */
(for root (SQRT CBRT)
(simplify
(mult (root:s @0) (root:s @1))
(root (mult @0 @1))))
/* Simplify pow(x,y) * pow(x,z) -> pow(x,y+z). */
(simplify
(mult (POW:s @0 @1) (POW:s @0 @2))
(POW @0 (plus @1 @2)))
/* Simplify pow(x,y) * pow(z,y) -> pow(x*z,y). */
(simplify
(mult (POW:s @0 @1) (POW:s @2 @1))
(POW (mult @0 @2) @1))
/* Simplify expN(x) * expN(y) -> expN(x+y). */
(for exps (EXP EXP2 EXP10 POW10)
(simplify
(mult (exps:s @0) (exps:s @1))
(exps (plus @0 @1))))
/* Simplify tan(x) * cos(x) -> sin(x). */
(simplify
(mult:c (TAN:s @0) (COS:s @0))
@ -2061,9 +2078,16 @@ along with GCC; see the file COPYING3. If not see
(POW @0 (minus @1 { build_one_cst (type); }))))
/* Simplify a/root(b/c) into a*root(c/b). */
(simplify
(rdiv @0 (SQRT:s (rdiv:s @1 @2)))
(mult @0 (SQRT (rdiv @2 @1))))
(for root (SQRT CBRT)
(simplify
(rdiv @0 (root:s (rdiv:s @1 @2)))
(mult @0 (root (rdiv @2 @1)))))
/* Simplify x/expN(y) into x*expN(-y). */
(for exps (EXP EXP2 EXP10 POW10)
(simplify
(rdiv @0 (exps:s @1))
(mult @0 (exps (negate @1)))))
/* Simplify x / pow (y,z) -> x * pow(y,-z). */
(simplify