diff options
Diffstat (limited to 'tools/perf/util/expr.y')
| -rw-r--r-- | tools/perf/util/expr.y | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y index 5b878f044f22..ba7d3b667fcb 100644 --- a/tools/perf/util/expr.y +++ b/tools/perf/util/expr.y @@ -142,6 +142,16 @@ if_expr: expr IF expr ELSE expr $$.ids = $1.ids; ids__free($3.ids); ids__free($5.ids); + } else if ($1.val == $5.val) { + /* + * LHS == RHS, so both are an identical constant. No need to + * evaluate any events. + */ + $$.val = $1.val; + $$.ids = NULL; + ids__free($1.ids); + ids__free($3.ids); + ids__free($5.ids); } else { /* * Value is either the LHS or RHS and we need the IF expression |