AMDGPU/SI: The SIShrinkInstructions pass should only fold immediates with one use

This is convered by existing testcases and will be exposed by a future
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241817 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed