tree 4d88d27299206410ab0908baa9f7d0be14075790
parent 69828ac1c6de77fadb3660d6f20b52d46440a0a9
author Vladimir Marko <vmarko@google.com> 1583850649 +0000
committer Vladimir Marko <vmarko@google.com> 1583860083 +0000

HStringBuilderAppend cannot be null.

Fix DCHECK() failure where we replaced an instruction
with non-null result (HInvoke StringBuilder.toString())
with an instruction that did not report that the result
cannot be null (HStringBuilderAppend) and then used the
result as both receiver and argument for String.equals().
The fix is to preserve the "cannot be null" invariant.

Test: Additional test in 697-checker-string-append.
Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 151107293
Bug: 19575890
Change-Id: I205f002bf8d2dfee6079ea0e14786ca0ab2e2e9c