From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
linux-kernel@vger.kernel.org, Andi Kleen <ak@linux.intel.com>,
Jin Yao <yao.jin@linux.intel.com>,
John Garry <john.garry@huawei.com>, Paul Clarke <pc@us.ibm.com>,
kajoljain <kjain@linux.ibm.com>,
linux-perf-users@vger.kernel.org
Cc: Stephane Eranian <eranian@google.com>,
Sandeep Dasgupta <sdasgup@google.com>,
Ian Rogers <irogers@google.com>
Subject: [PATCH v9 06/13] perf expr: Move actions to the left.
Date: Thu, 23 Sep 2021 00:46:09 -0700 [thread overview]
Message-ID: <20210923074616.674826-7-irogers@google.com> (raw)
In-Reply-To: <20210923074616.674826-1-irogers@google.com>
No functional change, just modifying whitespace. This creates additional
space for adding logic to actions in later changes.
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/util/expr.y | 124 +++++++++++++++++++++++++----------------
1 file changed, 75 insertions(+), 49 deletions(-)
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
index 5535badeef0a..78cbe377eb0e 100644
--- a/tools/perf/util/expr.y
+++ b/tools/perf/util/expr.y
@@ -70,54 +70,80 @@ MIN | MAX | IF | ELSE | SMT_ON | NUMBER | '|' | '^' | '&' | '-' | '+' | '*' | '/
'<' | '>' | D_RATIO
all_expr: if_expr { *final_val = $1; }
- ;
-
-if_expr:
- expr IF expr ELSE expr { $$ = $3 ? $1 : $5; }
- | expr
- ;
-
-expr: NUMBER
- | ID {
- struct expr_id_data *data;
-
- $$ = NAN;
- if (expr__resolve_id(ctx, $1, &data) == 0)
- $$ = expr_id_data__value(data);
-
- free($1);
- }
- | expr '|' expr { BINARY_LONG_OP($$, |, $1, $3); }
- | expr '&' expr { BINARY_LONG_OP($$, &, $1, $3); }
- | expr '^' expr { BINARY_LONG_OP($$, ^, $1, $3); }
- | expr '<' expr { BINARY_OP($$, <, $1, $3); }
- | expr '>' expr { BINARY_OP($$, >, $1, $3); }
- | expr '+' expr { BINARY_OP($$, +, $1, $3); }
- | expr '-' expr { BINARY_OP($$, -, $1, $3); }
- | expr '*' expr { BINARY_OP($$, *, $1, $3); }
- | expr '/' expr { if ($3 == 0) {
- pr_debug("division by zero\n");
- YYABORT;
- }
- $$ = $1 / $3;
- }
- | expr '%' expr { if ((long)$3 == 0) {
- pr_debug("division by zero\n");
- YYABORT;
- }
- $$ = (long)$1 % (long)$3;
- }
- | '-' expr %prec NEG { $$ = -$2; }
- | '(' if_expr ')' { $$ = $2; }
- | MIN '(' expr ',' expr ')' { $$ = $3 < $5 ? $3 : $5; }
- | MAX '(' expr ',' expr ')' { $$ = $3 > $5 ? $3 : $5; }
- | SMT_ON { $$ = smt_on() > 0; }
- | D_RATIO '(' expr ',' expr ')' { if ($5 == 0) {
- $$ = 0;
- } else {
- $$ = $3 / $5;
- }
- }
- ;
+
+if_expr: expr IF expr ELSE expr
+{
+ $$ = $3 ? $1 : $5;
+}
+| expr
+;
+
+expr: NUMBER
+{
+ $$ = $1;
+}
+| ID
+{
+ struct expr_id_data *data;
+
+ $$ = NAN;
+ if (expr__resolve_id(ctx, $1, &data) == 0)
+ $$ = expr_id_data__value(data);
+
+ free($1);
+}
+| expr '|' expr { BINARY_LONG_OP($$, |, $1, $3); }
+| expr '&' expr { BINARY_LONG_OP($$, &, $1, $3); }
+| expr '^' expr { BINARY_LONG_OP($$, ^, $1, $3); }
+| expr '<' expr { BINARY_OP($$, <, $1, $3); }
+| expr '>' expr { BINARY_OP($$, >, $1, $3); }
+| expr '+' expr { BINARY_OP($$, +, $1, $3); }
+| expr '-' expr { BINARY_OP($$, -, $1, $3); }
+| expr '*' expr { BINARY_OP($$, *, $1, $3); }
+| expr '/' expr
+{
+ if ($3 == 0) {
+ pr_debug("division by zero\n");
+ YYABORT;
+ }
+ $$ = $1 / $3;
+}
+| expr '%' expr
+{
+ if ((long)$3 == 0) {
+ pr_debug("division by zero\n");
+ YYABORT;
+ }
+ $$ = (long)$1 % (long)$3;
+}
+| D_RATIO '(' expr ',' expr ')'
+{
+ if ($5 == 0) {
+ $$ = 0;
+ } else {
+ $$ = $3 / $5;
+ }
+}
+| '-' expr %prec NEG
+{
+ $$ = -$2;
+}
+| '(' if_expr ')'
+{
+ $$ = $2;
+}
+| MIN '(' expr ',' expr ')'
+{
+ $$ = $3 < $5 ? $3 : $5;
+}
+| MAX '(' expr ',' expr ')'
+{
+ $$ = $3 > $5 ? $3 : $5;
+}
+| SMT_ON
+{
+ $$ = smt_on() > 0 ? 1.0 : 0.0;
+}
+;
%%
--
2.33.0.464.g1972c5931b-goog
next prev parent reply other threads:[~2021-09-23 7:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-23 7:46 [PATCH v9 00/13] Don't compute events that won't be used in a metric Ian Rogers
2021-09-23 7:46 ` [PATCH v9 01/13] perf metric: Restructure struct expr_parse_ctx Ian Rogers
2021-09-23 7:46 ` [PATCH v9 02/13] perf metric: Use NAN for missing event IDs Ian Rogers
2021-09-23 7:46 ` [PATCH v9 03/13] perf expr: Remove unused headers and inline d_ratio Ian Rogers
2021-09-23 7:46 ` [PATCH v9 04/13] perf expr: Separate token declataion from type Ian Rogers
2021-09-23 7:46 ` [PATCH v9 05/13] perf expr: Use macros for operators Ian Rogers
2021-09-23 7:46 ` Ian Rogers [this message]
2021-09-23 7:46 ` [PATCH v9 07/13] perf metric: Rename expr__find_other Ian Rogers
2021-09-23 7:46 ` [PATCH v9 08/13] perf metric: Add utilities to work on ids map Ian Rogers
2021-09-23 7:46 ` [PATCH v9 09/13] perf metric: Allow metrics with no events Ian Rogers
2021-09-23 7:46 ` [PATCH v9 10/13] perf expr: Merge find_ids and regular parsing Ian Rogers
2021-09-28 20:56 ` Jiri Olsa
2021-09-28 21:20 ` Ian Rogers
2021-09-23 7:46 ` [PATCH v9 11/13] perf expr: Propagate constants for binary operations Ian Rogers
2021-09-23 7:46 ` [PATCH v9 12/13] perf metric: Don't compute unused events Ian Rogers
2021-09-23 7:46 ` [PATCH v9 13/13] perf metric: Avoid events for an 'if' constant result Ian Rogers
2021-09-29 5:35 ` [PATCH v9 00/13] Don't compute events that won't be used in a metric Jiri Olsa
2021-09-29 15:19 ` John Garry
2021-09-29 16:09 ` Ian Rogers
2021-09-29 16:51 ` Arnaldo Carvalho de Melo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210923074616.674826-7-irogers@google.com \
--to=irogers@google.com \
--cc=acme@kernel.org \
--cc=ak@linux.intel.com \
--cc=alexander.shishkin@linux.intel.com \
--cc=eranian@google.com \
--cc=john.garry@huawei.com \
--cc=jolsa@redhat.com \
--cc=kjain@linux.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mingo@redhat.com \
--cc=namhyung@kernel.org \
--cc=pc@us.ibm.com \
--cc=peterz@infradead.org \
--cc=sdasgup@google.com \
--cc=yao.jin@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).