* builtins.c (interclass_mathfn_icode): New helper.
(expand_builtin_interclass_mathfn): Use it here, and split folding
into ...
(fold_builtin_interclass_mathfn): ... this new folder.
(build_call_nofold_loc): New static helper.
(build_call_nofold): New wrapper macro for above.
(expand_builtin_int_roundingfn): Use it instead of build_call_expr.
(expand_builtin_pow): Ditto.
(expand_builtin_memset_args): Ditto.
(expand_builtin_printf): Ditto.
(expand_builtin_fprintf): Ditto.
(expand_builtin_sprintf): Ditto.
(expand_builtin_memory_chk): Ditto.
(expand_builtin_mempcpy_args): Ditto and don't call folders.
(expand_builtin_stpcpy): Ditto.
(expand_builtin_strcmp): Ditto.
(expand_builtin_strncmp): Ditto.
(expand_builtin_strcpy): Remove FNDECL and MODE arguments.
(expand_builtin_strcpy_args): Don't call folders.
(expand_builtin_memcmp): Ditto.
(expand_builtin_strncpy): Ditto, and use target.
(expand_builtin_memcpy): Ditto.
(expand_builtin_strstr, expand_builtin_strchr, expand_builtin_strrchr,
expand_builtin_strpbrk, expand_builtin_memmove,
expand_builtin_memmove_args, expand_builtin_bcopy,
expand_builtin_memchr, expand_builtin_strcat, expand_builtin_strncat,
expand_builtin_strspn, expand_builtin_strcspn,
expand_builtin_fputs): Remove these.
(expand_builtin): Don't call the above, change calls to other
expanders that changed prototype.
(fold_builtin_stpcpy): New folder split out from expand_builtin_stpcpy.
(fold_builtin_1 <ISFINITE, ISINF, ISNORMAL>): Call
fold_builtin_interclass_mathfn.
(fold_builtin_2 <STPCPY>): Call fold_builtin_stpcpy.
(fold_builtin_strcat): Add folding split from expand_builtin_strcat.
* fold-const.c (fold_binary_loc <NE_EXPR>): Add !exp != 0 -> !exp.
* passes.c (init_optimization_passes): Move pass_fold_builtins
after last phiopt pass.
* tree-inline.c (fold_marked_statements): When folding builtins
iterate over all instruction potentially generated.
* tree-ssa-ccp.c (gimplify_and_update_call_from_tree): Declare
earlier.
(fold_gimple_call): Use it to always fold calls (into potentially
multiple instructions).
* tree-ssa-dom.c (optimize_stmt): Resolve __builtin_constant_p
calls into zero at this time.
* tree-ssa-propagate.c (substitute_and_fold): Ignore multiple
statements generated by builtin folding.
testsuite/
* gcc.dg/builtins-44.c: Use __builtin_isinf_sign when checking
for sign of -Inf.
From-SVN: r152236
