[llvm-commits] More aggressive speculation in SimplifyCFG

[Evan Cheng]

Hi Krzysztof,

What are you trying to accomplish with this change? It's hard to reason about the cost effectiveness of select formation in LLVM IR. Have you looked at the EarlyIfConversion pass?

Evan

On Jan 22, 2013, at 3:42 PM, Krzysztof Parzyszek <kparzysz at codeaurora.org> wrote:

> This is a patch that enables generating "select" instructions more aggressively in SimplifyCFG.  It was written a while ago to convert more instances of conditional code into a straight-line code.  As presented in the attached patch, it is disabled by default.
> 
> Please take a look and share comments if you have any.
> 
> -Krzysztof
> 
> 
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