| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
From-SVN: r232055
|
|
This series of patches fix PR61441. This patch avoids various transformations
with signaling NaN operands when flag_signaling_nans is on, to avoid folding
which would lose exceptions.
Bootstrapped & regression-tested on x86_64-linux-gnu.
gcc/
* fold-const.c (const_binop): Convert sNaN to qNaN when
flag_signaling_nans is off.
(const_unop): Avoid the operation, other than NEGATE and
ABS, if flag_signaling_nans is on and the operand is an sNaN.
(fold_convert_const_real_from_real): Avoid the operation if
flag_signaling_nans is on and the operand is an sNaN.
(integer_valued_real_unary_p): Update comment stating it
returns false for sNaN values.
(integer_valued_real_binary_p, integer_valued_real_call_p): Same.
(integer_valued_real_single_p): Same.
(integer_valued_real_invalid_p, integer_valued_real_p): Same.
* fold-const-call.c (fold_const_pow): Avoid the operation
if flag_signaling_nans is on and the operand is an sNaN.
(fold_const_builtin_load_exponent) Same.
(fold_const_call_sss): Same for CASE_CFN_POWI.
* gimple-fold.c (gimple_assign_integer_valued_real_p): Same.
(gimple_call_integer_valued_real_p): Same.
(gimple_phi_integer_valued_real_p): Same.
(gimple_stmt_integer_valued_real_p): Same.
* simplify-rtx.c (simplify_const_unary_operation): Avoid the
operation if flag_signaling_nans is on and the operand is an sNaN.
(simplify_const_binary_operation): Same.
* tree-ssa-math-opts.c (gimple_expand_builtin_pow): Avoid the
operation if flag_signaling_nans is on and the operand is an sNaN.
* gcc.dg/pr61441.c: New testcase.
From-SVN: r231901
|
|
This patch extends fold_const_call so that it can handle internal
as well as built-in functions.
Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.
gcc/
* fold-const-call.h (fold_const_call): Replace built_in_function
arguments with combined_fn arguments.
* fold-const-call.c: Include case-cfn-macros.h.
(fold_const_call_ss, fold_const_call_cs, fold_const_call_sc)
(fold_const_call_cc, fold_const_call_sss, fold_const_call_ccc)
(fold_const_call_ssss, fold_const_call_1, fold_const_call): Replace
built_in_function arguments with combined_fn arguments.
* builtins.c (fold_builtin_sincos, fold_builtin_1, fold_builtin_2)
(fold_builtin_3): Update calls to fold_const_call.
From-SVN: r230477
|
|
This patch moves folds that deal with constant string arguments and
return a constant integer or floating-point value. For example, it
handles strcmp ("foo", "bar") but not strstr ("foobar", "bar"),
which wouldn't currently be accepted by the gimple folders.
The builtins.c folding for strlen (via c_strlen) is a bit more general
than what the fold-const-call.c code does (and more general than we need
for the gimple folders). I've therefore left it as-is, even though it
partially duplicates the new code.
Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.
gcc/
* builtins.c (fold_builtin_nan): Delete.
(fold_builtin_memcmp): Remove case where both arguments are constant.
(fold_builtin_strcmp, fold_builtin_strncmp): Likewise.
(fold_builtin_strspn, fold_builtin_strcspn): Likewise.
(fold_builtin_1): Remove BUILT_IN_NAN* handling.
* fold-const-call.c: Include fold-const.h.
(host_size_t_cst_p): New function.
(build_cmp_result, fold_const_builtin_nan): Likewise.
(fold_const_call_1): New function, split out from...
(fold_const_call): ...here (for all three interfaces). Handle
constant nan, nans, strlen, strcmp, strncmp, strspn and strcspn.
From-SVN: r229922
|
|
The only folds left in builtins.c were for constants, so we can remove
the builtins.c handling entirely.
Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.
gcc/
* builtins.c (fold_builtin_bitop, fold_builtin_bswap): Delete.
(fold_builtin_1): Don't call them.
* fold-const-call.c: Include tm.h.
(fold_const_call_ss): New variant for integer-to-integer folds.
(fold_const_call): Call it.
From-SVN: r229921
|
|
Move the constant "is finite", "is infinite" and "is nan" queries
to fold-const-call.c.
Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.
gcc/
* builtins.c (fold_builtin_classify): Move constant cases to...
* fold-const-call.c (fold_const_call_ss): ...here.
From-SVN: r229920
|
|
The new routines operate on the built-in enum rather than on tree decls.
The idea is to extend this to handle internal functions too, with a
combined enum for both.
The patch also moves fold_fma too, with the same prototype. The long-term
plan is to replace FMA_EXPR with an internal function, for consistency
with the way that things like SQRT will be handled.
Tested on x86_64-linux-gnu, arm-linux-gnueabi and aarch64-linux-gnu.
gcc/
* builtins.h (fold_fma): Move to fold-const-call.h.
* builtins.c: Include fold-const-call.h.
(mathfn_built_in_2): New function, split out from...
(mathfn_built_in_1): ...here.
(do_real_to_int_conversion, fold_const_builtin_pow)
(fold_const_builtin_logb, fold_const_builtin_significand)
(fold_const_builtin_load_exponent, do_mpfr_arg1, do_mpfr_arg2)
(do_mpfr_arg3, do_mpfr_sincos, do_mpfr_bessel_n, do_mpc_arg1): Delete.
(fold_builtin_sincos): Use fold_const_call to handle constants.
(fold_builtin_1, fold_builtin_2, fold_builtin_3): Add explicit
checks for ERROR_MARK. Use fold_const_call to handle constant
folds for math functions.
(fold_fma): Move to fold-const-call.c.
* fold-const.c: Include fold-const-call.h.
* Makefile.in (OBJS): Add fold-const-call.o.
(PLUGIN_HEADERS): Add fold-const-call.h.
* realmpfr.h (real_from_mpfr): Allow the format to be specified
directly.
* realmpfr.c (real_from_mpfr): Likewise.
* fold-const-call.h, fold-const-call.c: New files.
From-SVN: r229669
|
