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| author | Jeff Law <law@redhat.com> | 2018-02-20 11:52:07 -0700 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2018-02-20 11:52:07 -0700 |
| commit | aa67d03c30f907fd47adfadff3fb7c58c0b437d1 (patch) | |
| tree | 6272d72d919142c308a094654059224031a33978 /gcc/gimple-ssa-sprintf.c | |
| parent | 2db63ab20cdbd39e2ef83e41f34bb4ef8bcfb337 (diff) | |
| download | gcc-aa67d03c30f907fd47adfadff3fb7c58c0b437d1.zip gcc-aa67d03c30f907fd47adfadff3fb7c58c0b437d1.tar.gz gcc-aa67d03c30f907fd47adfadff3fb7c58c0b437d1.tar.bz2 | |
re PR middle-end/82123 (spurious -Wformat-overflow warning for converted vars)
PR middle-end/82123
PR tree-optimization/81592
PR middle-end/79257
* gimple-ssa-sprintf.c: Include alloc-pool.h, vr-values.h and
gimple-ssa-evrp-analyze.h
(class sprintf_dom_walker): Add after_dom_children member function.
Add evrp_range_analyzer member.
(sprintf_dom_walker::before_dom_children): Call into the EVRP
range analyzer as needed.
(sprintf_dom_walker::after_dom_children): New member function.
* gcc.dg/builtin-unreachable-6.c: Turn off VRP.
From-SVN: r257852
Diffstat (limited to 'gcc/gimple-ssa-sprintf.c')
| -rw-r--r-- | gcc/gimple-ssa-sprintf.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/gimple-ssa-sprintf.c b/gcc/gimple-ssa-sprintf.c index a2dd545..545f833 100644 --- a/gcc/gimple-ssa-sprintf.c +++ b/gcc/gimple-ssa-sprintf.c @@ -80,6 +80,9 @@ along with GCC; see the file COPYING3. If not see #include "substring-locations.h" #include "diagnostic.h" #include "domwalk.h" +#include "alloc-pool.h" +#include "vr-values.h" +#include "gimple-ssa-evrp-analyze.h" /* The likely worst case value of MB_LEN_MAX for the target, large enough for UTF-8. Ideally, this would be obtained by a target hook if it were @@ -121,10 +124,12 @@ class sprintf_dom_walker : public dom_walker ~sprintf_dom_walker () {} edge before_dom_children (basic_block) FINAL OVERRIDE; + void after_dom_children (basic_block) FINAL OVERRIDE; bool handle_gimple_call (gimple_stmt_iterator *); struct call_info; bool compute_format_length (call_info &, format_result *); + class evrp_range_analyzer evrp_range_analyzer; }; class pass_sprintf_length : public gimple_opt_pass @@ -3456,7 +3461,7 @@ parse_directive (sprintf_dom_walker::call_info &info, bool sprintf_dom_walker::compute_format_length (call_info &info, - format_result *res) + format_result *res) { if (dump_file) { @@ -4012,11 +4017,15 @@ sprintf_dom_walker::handle_gimple_call (gimple_stmt_iterator *gsi) edge sprintf_dom_walker::before_dom_children (basic_block bb) { + evrp_range_analyzer.enter (bb); for (gimple_stmt_iterator si = gsi_start_bb (bb); !gsi_end_p (si); ) { /* Iterate over statements, looking for function calls. */ gimple *stmt = gsi_stmt (si); + /* First record ranges generated by this statement. */ + evrp_range_analyzer.record_ranges_from_stmt (stmt, false); + if (is_gimple_call (stmt) && handle_gimple_call (&si)) /* If handle_gimple_call returns true, the iterator is already pointing to the next statement. */ @@ -4027,6 +4036,12 @@ sprintf_dom_walker::before_dom_children (basic_block bb) return NULL; } +void +sprintf_dom_walker::after_dom_children (basic_block bb) +{ + evrp_range_analyzer.leave (bb); +} + /* Execute the pass for function FUN. */ unsigned int |