[Webkit-unassigned] [Bug 233529] REGRESSION(r283855) [GTK][WPE] imported/w3c/web-platform-tests/webaudio/the-audio-api/the-pannernode-interface/panner-equalpower.html fails

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=233529

--- Comment #2 from Chris Dumez <cdumez at apple.com> ---
Ok, I can reproduce the following failure on Intel if I disable the `#if USE(ACCELERATE)` in VectorMath.cpp:
--- /Volumes/Data/WebKit/OpenSource/WebKitBuild/Debug/layout-test-results/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-pannernode-interface/panner-equalpower-expected.txt
+++ /Volumes/Data/WebKit/OpenSource/WebKitBuild/Debug/layout-test-results/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-pannernode-interface/panner-equalpower-actual.txt
@@ -14,7 +14,13 @@
 PASS   Mono: Left and right channels is identical to the array [expected array].
 PASS < [mono source=listener] All assertions passed. (total 1 assertions)
 PASS > [stereo source=listener] Source and listener at the same position
-PASS   Stereo: Left and right channels is identical to the array [expected array].
-PASS < [stereo source=listener] All assertions passed. (total 1 assertions)
-PASS # AUDIT TASK RUNNER FINISHED: 3 tasks ran successfully.
+FAIL X Stereo: Left and right channels expected to be equal to the array [expected array] but differs in 8025 places:
+       Index   Actual                  Expected
+       [129]   -9.094678e-1    -9.937366e-1
+       [130]   -8.316806e-1    -9.996189e-1
+       [131]   -7.479766e-1    -9.983897e-1
+       [132]   -6.589520e-1    -9.900583e-1
+       ...and 8021 more errors. assert_true: expected true got false
+FAIL < [stereo source=listener] 1 out of 1 assertions were failed. assert_true: expected true got false
+FAIL # AUDIT TASK RUNNER FINISHED: 1 out of 3 tasks were failed. assert_true: expected true got false

Seems to confirm that the Intel implementation for one of our vector math functions is somehow wrong. The results seem pretty different so it doesn't look like a simple precision issue.

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