Kang Zhang b3d258fc44 [CodeGen] Do the Simple Early Return in block-placement pass to optimize the blocks ...

Summary:

Fix a bug of preducessors.

In `block-placement` pass, it will create some patterns for unconditional we can do the simple early retrun.
But the `early-ret` pass is before `block-placement`, we don't want to run it again.
This patch is to do the simple early return to optimize the blocks at the last of `block-placement`.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D63972

llvm-svn: 369191

2019-08-17 14:37:05 +00:00

129 KiB

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