[PATCH] Make sure branch edge weights are not dropped in TailDuplicatePass

[Manman Ren]

The testing case seems to miss FileCheck.
+; RUN: llc -march=arm -print-machineinstrs=tailduplication
-tail-dup-size=100 -enable-tail-merge=false -disable-cgp < %s

+; CHECK: Successors according to CFG: BB#1(1234) BB#2(5678)
+; CHECK: Successors according to CFG: BB#1(4321) BB#2(8765)

The above numbers look weird 1234 5678 :]

Thanks for working on this.
Manman



On Tue, Feb 11, 2014 at 10:36 AM, Akira Hatanaka <ahatanak at gmail.com> wrote:

> There are two lines in TailDuplication.cpp where edge weights are not
> passed to MachineBasicBlock::addSuccessor, which results in the weights
> being dropped from MachineBasicBlock. The attached patch fixes this bug.
>
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