Jonas Paulsson b7caa809e1 [SystemZ] Improve getMemoryOpCost() to find foldable loads that are converted. ...

The SystemZ backend can do arithmetic of memory by loading and then extending
one of the operands. Similarly, a load + truncate can be folded into an
operand.

This patch improves the SystemZ TTI cost function to recognize this.

Review: Ulrich Weigand
https://reviews.llvm.org/D52692

llvm-svn: 345327

2018-10-25 22:28:25 +00:00

35 KiB

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