43907d608a
If we have a writeonly function called from a callsite with a potentially reading operand bundle, we can not conclude the callsite is writeonly. The changed test is the only one I've been able to demonstrate a current miscompile on, but an incorrect result here could show up in a bunch of subtle ways. For instance, this issue caused several spurious test changes when combined with D117591.
This directory contains test cases for individual source features of LLVM. It is designed to make sure that the major components of LLVM support all of the features of LLVM, for very small examples. Entire programs should not go here. Regression tests for individual bug fixes should go into the test/Regression dir.