Rework/enhance stack coloring data flow analysis.

Description

Rework/enhance stack coloring data flow analysis.

Replace bidirectional flow analysis to compute liveness with forward
analysis pass. Treat lifetimes as starting when there is a first
reference to the stack slot, as opposed to starting at the point of the
lifetime.start intrinsic, so as to increase the number of stack
variables we can overlap.

Reviewers: gbiv, qcolumbet, wmi
Differential Revision: http://reviews.llvm.org/D18827

Bug: 25776

Details

Committed
thanmMay 24 2016, 6:23 AM
Parents
rL270558: [X86][SSE] Added vector sitofp/uitofp folded load tests
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