Yet another horrible phi/loop edge case (pun intended). Added test. Bug: b/133440380 Bug: b/133481698 Change-Id: I327842fa2d4314bce938454da81f67f890cf9e12 Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/31845 Presubmit-Ready: Ben Clayton <bclayton@google.com> Kokoro-Presubmit: kokoro <noreply+kokoro@google.com> Tested-by: Ben Clayton <bclayton@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com>
