Matt Arsenault 57c37b2dcd AMDGPU: Fix producing saveexec when the copy is spilled ...

If the register from the copy from exec was spilled,
the copy before the spill was deleted leaving a spill
of undefined register verifier error and miscompiling.
Check for other use instructions of the copy register.

llvm-svn: 318132

2017-11-14 02:16:54 +00:00

11 KiB

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