Matt Arsenault e70d5dcf3e AMDGPU: Fix handling of constant phi input loop conditions ...

If the loop condition was an i1 phi with a constantexpr input, this
would add a loop intrinsic fed by a phi dependent on a call to
if.break in the same block. Insert the call in the loop header.

llvm-svn: 298121

2017-03-17 20:52:21 +00:00

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