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Author SHA1 Message Date
Lei Huang 34e6621724 Update branch coalescing to be a PowerPC specific pass 
Implementing this pass as a PowerPC specific pass.  Branch coalescing utilizes
the analyzeBranch method which currently does not include any implicit operands.
This is not an issue on PPC but must be handled on other targets.

Pass is currently off by default. Enabled via -enable-ppc-branch-coalesce.

Differential Revision : https: // reviews.llvm.org/D32776

llvm-svn: 313061
 2017-09-12 18:39:11 +00:00
Eric Christopher e42ac21499 Temporarily revert "Update branch coalescing to be a PowerPC specific pass" 
From comments and code review it wasn't intended to be enabled by default yet.

This reverts commit r311588.

llvm-svn: 312214
 2017-08-31 05:56:16 +00:00
Lei Huang 0cb591fc4c Update branch coalescing to be a PowerPC specific pass 
Implementing this pass as a PowerPC specific pass.  Branch coalescing utilizes
the analyzeBranch method which currently does not include any implicit operands.
This is not an issue on PPC but must be handled on other targets.

Differential Revision : https: // reviews.llvm.org/D32776

llvm-svn: 311588
 2017-08-23 19:25:04 +00:00
Nemanja Ivanovic b223cfabcc Improve scheduling with branch coalescing 
This patch adds a MachineSSA pass that coalesces blocks that branch
on the same condition.

Committing on behalf of Lei Huang.

Differential Revision: https://reviews.llvm.org/D28249

llvm-svn: 296670
 2017-03-01 20:29:34 +00:00