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| author | David Malcolm <dmalcolm@redhat.com> | 2023-06-09 17:58:33 -0400 |
|---|---|---|
| committer | David Malcolm <dmalcolm@redhat.com> | 2023-06-09 17:58:33 -0400 |
| commit | fe9771b59f576fb37e762013ef5d9b26162e3a88 (patch) | |
| tree | b4fd74fa4aad827adca16432c35bdbeeef9f0064 /gcc/internal-fn.def | |
| parent | 067a8c7cb897b6a1ea5b1d26df8e89ccc7f0659c (diff) | |
| download | gcc-fe9771b59f576fb37e762013ef5d9b26162e3a88.zip gcc-fe9771b59f576fb37e762013ef5d9b26162e3a88.tar.gz gcc-fe9771b59f576fb37e762013ef5d9b26162e3a88.tar.bz2 | |
analyzer: add caching to globals with initializers [PR110112]
PR analyzer/110112 notes that -fanalyzer is extremely slow on a source
file with large read-only static arrays, repeatedly building the
same compound_svalue representing the full initializer, and repeatedly
building svalues representing parts of the the full initialiazer.
This patch adds caches for both of these; together they reduce the time
taken by -fanalyzer -O2 on the testcase in the bug for an optimized
build:
91.2s : no caches (status quo)
32.4s : cache in decl_region::get_svalue_for_constructor
3.7s : cache in region::get_initial_value_at_main
3.1s : both caches (this patch)
gcc/analyzer/ChangeLog:
PR analyzer/110112
* region-model.cc (region_model::get_initial_value_for_global):
Move code to region::calc_initial_value_at_main.
* region.cc (region::get_initial_value_at_main): New function.
(region::calc_initial_value_at_main): New function, based on code
in region_model::get_initial_value_for_global.
(region::region): Initialize m_cached_init_sval_at_main.
(decl_region::get_svalue_for_constructor): Add a cache, splitting
out body to...
(decl_region::calc_svalue_for_constructor): ...this new function.
* region.h (region::get_initial_value_at_main): New decl.
(region::calc_initial_value_at_main): New decl.
(region::m_cached_init_sval_at_main): New field.
(decl_region::decl_region): Initialize m_ctor_svalue.
(decl_region::calc_svalue_for_constructor): New decl.
(decl_region::m_ctor_svalue): New field.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
Diffstat (limited to 'gcc/internal-fn.def')
0 files changed, 0 insertions, 0 deletions