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[VPlan][LV] Introduce condition bit in VPBlockBase

Description

[VPlan][LV] Introduce condition bit in VPBlockBase

This patch introduces a VPValue in VPBlockBase to represent the condition
bit that is used as successor selector when a block has multiple successors.
This information wasn't necessary until now, when we are about to introduce
outer loop vectorization support in VPlan code gen.

Reviewers: fhahn, rengolin, mkuper, hfinkel, mssimpso

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D48814

Details

Committed
dcaballeJul 9 2018, 8:57 AM
Reviewer
fhahn
Differential Revision
D48814: [VPlan] Introduce condition bit in VPBlockBase.
Parents
rL336553: [clangd] Support indexing MACROs.
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