[jdk11u-dev] RFR: 8267773: PhaseStringOpts::int_stringSize doesn't handle min_jint correctly

[Adam Farley]

Hi all,

This pull request contains a backport of commit [d47a77d2](https://github.com/openjdk/jdk/commit/d47a77d2d54ee8c41ef969b42b3336a646dffd7b) from the [openjdk/jdk](https://git.openjdk.java.net/jdk) repository.

The commit being backported was authored by Nils Eliasson on 2 Jun 2021 and was reviewed by Roland Westrelin.

Thanks!

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Commit messages:
 - Backport d47a77d2d54ee8c41ef969b42b3336a646dffd7b

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/18/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=18&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267773
  Stats: 65 lines in 2 files changed: 65 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/18.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/18/head:pull/18

PR: https://git.openjdk.java.net/jdk11u-dev/pull/18