Simon Pilgrim 0621f56c84 [TableGen] CodeGenDAGPatterns::GenerateVariants - full caching of matching predicates ...

Further extension to D51035, this patch avoids all repeated predicates[] matching by caching as it collects the patterns that have multiple variants.

Saves around 25secs in debug builds of x86 -gen-dag-isel.

Differential Revision: https://reviews.llvm.org/D51839

llvm-svn: 342467

2018-09-18 11:30:30 +00:00

163 KiB

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