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* DAG: Don't use ABI copies in some contextsMatt Arsenault2018-08-301-0/+176
If an ABI-like value is used in a different block, the type split used is not necessarily the same as the call's ABI. The value is used through an intermediate copy virtual registers from the other block. This resulted in copies with inconsistent sizes later. Fixes regressions since r338197 when AMDGPU started splitting vector types for calls. llvm-svn: 341018
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