tree dc71226b7cc7939e345eda7cf82b2fb61c38cedc
parent e00815696e6bd0f5797efd1fbf5b79dd3c0195fa
author Ben Clayton <bclayton@google.com> 1578313908 +0000
committer Ben Clayton <bclayton@google.com> 1578317909 +0000

VulkanUnitTests: Fix SPIR-V validation issue

`LoopDivergentMergePhi` was attempting to use the same merge block for a `OpLoopMerge` and a `OpSelectionMerge`. This is not legal, and was caught by improvements to the SPIR-V tools validator.

The fix is simple: Add a new merge block for the inner `OpSelectionMerge` that immediately jumps to the merge block for the `OpLoopMerge`.

Bug: b/123642959
Bug: b/133440380
Bug: b/133481698
Change-Id: I8b5da04a1cd2db3e44bb5b50f1619a8565e5bc9d