Title: [221868] trunk/Tools
Revision
221868
Author
[email protected]
Date
2017-09-11 11:43:13 -0700 (Mon, 11 Sep 2017)

Log Message

Turn on exception scope verification for JSC tests.
https://bugs.webkit.org/show_bug.cgi?id=162351
<rdar://problem/29563911>

Reviewed by Saam Barati.

Added the option to --validateExceptionChecks=true option to BASE_OPTIONS in
run-jsc-stress-tests.  This turns on exception scope verification on JSC test
runs (which currently does not include testapi).

Some stats on time to run JSC stress and mozilla tests:
1. Release build w/o --validateExceptionChecks=true: real 16m22.544s, user 156m24.080s, sys 123m3.649s
2. Debug build w/o --validateExceptionChecks=true: real 78m34.206s, user 1661m57.008s, sys 73m21.177s
3. Debug build w/ --validateExceptionChecks=true: real 77m41.106s, user 1656m13.924s, sys 73m42.309s
4. Debug build w/ --validateExceptionChecks=true --dumpSimulatedThrows=true: real 92m56.918s, user 2012m56.441s, sys 75m14.174s

The stats shows that (2) and (3) has effectively no time difference.  Hence, the
cost of enabling --validateExceptionChecks=true is not significant.

It would be nice to enable --dumpSimulatedThrows=true as well, but (4) is about
21% slower than (3).  To avoid making debug test runs a lot slower, we'll leave
--dumpSimulatedThrows=true off.  We can manually add that when we see a regression
and need to debug the issue.  Otherwise, we wont pay the price for it.

* Scripts/run-jsc-stress-tests:

Modified Paths

Diff

Modified: trunk/Tools/ChangeLog (221867 => 221868)


--- trunk/Tools/ChangeLog	2017-09-11 18:27:54 UTC (rev 221867)
+++ trunk/Tools/ChangeLog	2017-09-11 18:43:13 UTC (rev 221868)
@@ -1,3 +1,31 @@
+2017-09-11  Mark Lam  <[email protected]>
+
+        Turn on exception scope verification for JSC tests.
+        https://bugs.webkit.org/show_bug.cgi?id=162351
+        <rdar://problem/29563911>
+
+        Reviewed by Saam Barati.
+
+        Added the option to --validateExceptionChecks=true option to BASE_OPTIONS in
+        run-jsc-stress-tests.  This turns on exception scope verification on JSC test
+        runs (which currently does not include testapi).
+
+        Some stats on time to run JSC stress and mozilla tests:
+        1. Release build w/o --validateExceptionChecks=true: real 16m22.544s, user 156m24.080s, sys 123m3.649s
+        2. Debug build w/o --validateExceptionChecks=true: real 78m34.206s, user 1661m57.008s, sys 73m21.177s
+        3. Debug build w/ --validateExceptionChecks=true: real 77m41.106s, user 1656m13.924s, sys 73m42.309s
+        4. Debug build w/ --validateExceptionChecks=true --dumpSimulatedThrows=true: real 92m56.918s, user 2012m56.441s, sys 75m14.174s
+
+        The stats shows that (2) and (3) has effectively no time difference.  Hence, the
+        cost of enabling --validateExceptionChecks=true is not significant.
+
+        It would be nice to enable --dumpSimulatedThrows=true as well, but (4) is about
+        21% slower than (3).  To avoid making debug test runs a lot slower, we'll leave
+        --dumpSimulatedThrows=true off.  We can manually add that when we see a regression
+        and need to debug the issue.  Otherwise, we wont pay the price for it.
+
+        * Scripts/run-jsc-stress-tests:
+
 2017-09-11  Myles C. Maxfield  <[email protected]>
 
         WSL should support for loops

Modified: trunk/Tools/Scripts/run-jsc-stress-tests (221867 => 221868)


--- trunk/Tools/Scripts/run-jsc-stress-tests	2017-09-11 18:27:54 UTC (rev 221867)
+++ trunk/Tools/Scripts/run-jsc-stress-tests	2017-09-11 18:43:13 UTC (rev 221868)
@@ -444,7 +444,7 @@
 $numPasses = 0
 
 # We force all tests to use a smaller (1.5M) stack so that stack overflow tests can run faster.
-BASE_OPTIONS = ["--useFTLJIT=false", "--useFunctionDotArguments=true", "--maxPerThreadStackUsage=1572864"]
+BASE_OPTIONS = ["--useFTLJIT=false", "--useFunctionDotArguments=true", "--validateExceptionChecks=true", "--maxPerThreadStackUsage=1572864"]
 EAGER_OPTIONS = ["--thresholdForJITAfterWarmUp=10", "--thresholdForJITSoon=10", "--thresholdForOptimizeAfterWarmUp=20", "--thresholdForOptimizeAfterLongWarmUp=20", "--thresholdForOptimizeSoon=20", "--thresholdForFTLOptimizeAfterWarmUp=20", "--thresholdForFTLOptimizeSoon=20", "--maximumEvalCacheableSourceLength=150000", "--useEagerCodeBlockJettisonTiming=true"]
 # NOTE: Tests rely on this using scribbleFreeCells.
 NO_CJIT_OPTIONS = ["--useConcurrentJIT=false", "--thresholdForJITAfterWarmUp=100", "--scribbleFreeCells=true"]
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