LiveEdit: implement frame dropping

test/mjsunit/mjsunit.status

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 # modification, are permitted provided that the following conditions are
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 #
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@@ skipping 30 matching lines @@
 
 # Issue 488: this test sometimes times out.
 array-constructor: PASS || TIMEOUT
 
 # Very slow on ARM, contains no architecture dependent code.
 unicode-case-overoptimization: PASS, TIMEOUT if ($arch == arm)
 
 # Skip long running test in debug and allow it to timeout in release mode.
 regress/regress-524: (PASS || TIMEOUT), SKIP if $mode == debug
 
+# Skip experimental liveedit drop frame on non-ia32 architectures.
+# debug-liveedit-check-stack: SKIP if $arch != ia32
+debug-liveedit-check-stack: SKIP
+
 [ $arch == arm ]
 
 # Slow tests which times out in debug mode.
 try: PASS, SKIP if $mode == debug
 debug-scripts-request: PASS, SKIP if $mode == debug
 array-constructor: PASS, SKIP if $mode == debug
 
 # Flaky test that can hit compilation-time stack overflow in debug mode.
 unicode-test: PASS, (PASS || FAIL) if $mode == debug
 
 # Times out often in release mode on ARM.
 array-splice: PASS || TIMEOUT
 
 # Skip long running test in debug mode on ARM.
 string-indexof-2: PASS, SKIP if $mode == debug
 
 [ $arch == mips ]
 
 # Skip all tests on MIPS.
 *: SKIP