<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div apple-content-edited="true"><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "></div>
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<br><div><div>On Jan 29, 2013, at 11:05 AM, Quentin Colombet <<a href="mailto:qcolombet@apple.com">qcolombet@apple.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html charset=us-ascii"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,<div><br></div><div>Currently in DAG combiner, we have roughly the following workflow for each Selection DAG node:</div><div>1. Target-independent DAG combine</div><div>2. Target-specific DAG combine</div><div><br></div><div>I'd like to add a target-specific DAG combine pass before any target-independent, i.e.,</div><div><div>1. Target-specific DAG combine</div><div>2. Target-independent DAG combine</div><div>3. Target-specific DAG combine</div></div><div><br></div><div>Attached is a patch that realizes that.</div><div><br></div><div>The patch uses the exact same construction as the existing "late" target-specific DAG combine hook. In other words, it defines three new methods in the base class of target lowering:</div><div>- One to set which types of SDNode should be processed through the "early" target specific DAG combine</div><div>- One to query whether a type of SDNode has been marked as should be "early" DAG combined.</div><div>- One virtual method that is the hook to the "early" DAG combine processing.</div><div>And adds the call to the related hook in DAGCombiner.</div><div><br></div><div>Thanks for your reviews.</div><div><div apple-content-edited="true">
<div style="font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br></div><div style="font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">-Quentin</div>
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</div></div><span><earlyTargetSpecificDAGCombine.patch></span><meta http-equiv="Content-Type" content="text/html charset=us-ascii"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div></div></div>
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