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| author | Jakub Jelinek <jakub@redhat.com> | 2010-11-20 00:48:57 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-11-20 00:48:57 +0100 |
| commit | 8e97bc2bdb4013cbb62d9910083b240e0eb01941 (patch) | |
| tree | e65b38b3e2f234c14ced25bd4b7e019d0bf01d3f /gcc/tree.h | |
| parent | fb3303597e3e88c6c03f2c699ec89c55fb7b7cfc (diff) | |
| download | gcc-8e97bc2bdb4013cbb62d9910083b240e0eb01941.zip gcc-8e97bc2bdb4013cbb62d9910083b240e0eb01941.tar.gz gcc-8e97bc2bdb4013cbb62d9910083b240e0eb01941.tar.bz2 | |
re PR tree-optimization/45830 (Code+rodata increase with -ftree-switch-conversion)
PR tree-optimization/45830
* stmt.c (expand_switch_using_bit_tests_p): New function.
(expand_case): Use it.
* tree.h (expand_switch_using_bit_tests_p): New prototype.
* tree-switch-conversion.c (struct switch_conv_info): Add
bit_test_uniq, bit_test_count and bit_test_bb fields.
(check_range): Fix a comment.
(check_process_case): Compute bit_test_uniq and bit_test_count.
(create_temp_arrays): Use XCNEWVEC, merge 3 arrays into one
allocation.
(free_temp_arrays): Use XDELETEVEC, adjust for the 3 arrays merging.
(constructor_contains_same_values_p): Use FOR_EACH_VEC_ELT.
(array_value_type): New function.
(build_one_array): Use it, if it returned different type,
fold_convert all constructor fields and convert back to the
wider type in the generated code.
(process_switch): Initialize bit_test_uniq, bit_test_count and
bit_test_bb fields. Don't optimize if expand_switch_using_bit_tests_p
returned true.
* gcc.target/i386/pr45830.c: New test.
* gcc.c-torture/execute/pr45830.c: New test.
From-SVN: r166966
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -5314,6 +5314,8 @@ extern bool parse_input_constraint (const char **, int, int, int, int, const char * const *, bool *, bool *); extern void expand_asm_stmt (gimple); extern tree resolve_asm_operand_names (tree, tree, tree, tree); +extern bool expand_switch_using_bit_tests_p (tree, tree, unsigned int, + unsigned int); extern void expand_case (gimple); extern void expand_decl (tree); #ifdef HARD_CONST |