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re PR lto/49302 (FAIL: gcc.dg/lto/20110201-1 c_lto_20110201-1_0.o-c_lto_20110201-1_0.o) 

2011-06-10  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR lto/49302
	* tree-ssa-math-opts.c (powi_as_mults): Minor cleanup.
	(build_and_insert_call): Likewise.
	(build_and_insert_ref): New.
	(gimple_expand_builtin_pow): Minor cleanup.
	(gimple_expand_builtin_cabs): New.
	(execute_cse_sincos): Add case for BUILT_IN_CABS.

From-SVN: r174912
This commit is contained in:
Bill Schmidt 2011-06-10 15:28:46 +00:00 committed by William Schmidt
parent 749f25d8a7
commit d7e2a1c138
2 changed files with 80 additions and 3 deletions
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10
gcc/ChangeLog
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@ -1,3 +1,13 @@
2011-06-10 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR lto/49302
* tree-ssa-math-opts.c (powi_as_mults): Minor cleanup.
(build_and_insert_call): Likewise.
(build_and_insert_ref): New.
(gimple_expand_builtin_pow): Minor cleanup.
(gimple_expand_builtin_cabs): New.
(execute_cse_sincos): Add case for BUILT_IN_CABS.
2011-06-10 Jan Hubicka <jh@suse.cz>
* ipa-cp.c (ipcp_versionable_function_p): Aliases are not versionable.

73
gcc/tree-ssa-math-opts.c
View File

@ -987,7 +987,7 @@ powi_as_mults (gimple_stmt_iterator *gsi, location_t loc,
memset (cache, 0, sizeof (cache));
cache[1] = arg0;
target = create_tmp_var (type, "powmult");
target = create_tmp_reg (type, "powmult");
add_referenced_var (target);
result = powi_as_mults_1 (gsi, loc, type, (n < 0) ? -n : n, cache, target);
@ -1041,7 +1041,7 @@ build_and_insert_call (gimple_stmt_iterator *gsi, location_t loc,
if (!*var)
{
*var = create_tmp_var (TREE_TYPE (arg), "powroot");
*var = create_tmp_reg (TREE_TYPE (arg), "powroot");
add_referenced_var (*var);
}
@ -1070,6 +1070,22 @@ build_and_insert_binop (gimple_stmt_iterator *gsi, location_t loc,
return result;
}
/* Build a gimple reference operation with the given CODE and argument
ARG, assigning the result to a new SSA name for variable TARGET.
Insert the statement prior to GSI's current position, and return
the fresh SSA name. */
static inline tree
build_and_insert_ref (gimple_stmt_iterator *gsi, location_t loc, tree type,
tree target, enum tree_code code, tree arg0)
{
tree result = make_ssa_name (target, NULL);
gimple stmt = gimple_build_assign (result, build1 (code, type, arg0));
gimple_set_location (stmt, loc);
gsi_insert_before (gsi, stmt, GSI_SAME_STMT);
return result;
}
/* ARG0 and ARG1 are the two arguments to a pow builtin call in GSI
with location info LOC. If possible, create an equivalent and
less expensive sequence of statements prior to GSI, and return an
@ -1124,7 +1140,7 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *gsi, location_t loc,
if we don't have a hardware sqrt insn. */
dconst1_4 = dconst1;
SET_REAL_EXP (&dconst1_4, REAL_EXP (&dconst1_4) - 2);
hw_sqrt_exists = optab_handler(sqrt_optab, mode) != CODE_FOR_nothing;
hw_sqrt_exists = optab_handler (sqrt_optab, mode) != CODE_FOR_nothing;
if (flag_unsafe_math_optimizations
&& sqrtfn
@ -1306,6 +1322,42 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *gsi, location_t loc,
return NULL_TREE;
}
/* ARG is the argument to a cabs builtin call in GSI with location info
LOC. Create a sequence of statements prior to GSI that calculates
sqrt(R*R + I*I), where R and I are the real and imaginary components
of ARG, respectively. Return an expression holding the result. */
static tree
gimple_expand_builtin_cabs (gimple_stmt_iterator *gsi, location_t loc, tree arg)
{
tree target, real_part, imag_part, addend1, addend2, sum, result;
tree type = TREE_TYPE (TREE_TYPE (arg));
tree sqrtfn = mathfn_built_in (type, BUILT_IN_SQRT);
enum machine_mode mode = TYPE_MODE (type);
if (!flag_unsafe_math_optimizations
|| !optimize_bb_for_speed_p (gimple_bb (gsi_stmt (*gsi)))
|| !sqrtfn
|| optab_handler (sqrt_optab, mode) == CODE_FOR_nothing)
return NULL_TREE;
target = create_tmp_reg (type, "cabs");
add_referenced_var (target);
real_part = build_and_insert_ref (gsi, loc, type, target,
REALPART_EXPR, arg);
addend1 = build_and_insert_binop (gsi, loc, target, MULT_EXPR,
real_part, real_part);
imag_part = build_and_insert_ref (gsi, loc, type, target,
IMAGPART_EXPR, arg);
addend2 = build_and_insert_binop (gsi, loc, target, MULT_EXPR,
imag_part, imag_part);
sum = build_and_insert_binop (gsi, loc, target, PLUS_EXPR, addend1, addend2);
result = build_and_insert_call (gsi, loc, &target, sqrtfn, sum);
return result;
}
/* Go through all calls to sin, cos and cexpi and call execute_cse_sincos_1
on the SSA_NAME argument of each of them. Also expand powi(x,n) into
an optimal number of multiplies, when n is a constant. */
@ -1388,6 +1440,21 @@ execute_cse_sincos (void)
}
break;
CASE_FLT_FN (BUILT_IN_CABS):
arg0 = gimple_call_arg (stmt, 0);
loc = gimple_location (stmt);
result = gimple_expand_builtin_cabs (&gsi, loc, arg0);
if (result)
{
tree lhs = gimple_get_lhs (stmt);
gimple new_stmt = gimple_build_assign (lhs, result);
gimple_set_location (new_stmt, loc);
unlink_stmt_vdef (stmt);
gsi_replace (&gsi, new_stmt, true);
}
break;
default:;
}
}