Jonas Paulsson 06acb3a236 [SystemZ::TTI] Improve cost for compare of i64 with extended i32 load ...

CGF/CLGF compares an i64 register with a sign/zero extended loaded i32 value
in memory.

This patch makes such a load considered foldable and so gets a 0 cost.

Review: Ulrich Weigand
https://reviews.llvm.org/D54944

llvm-svn: 347735

2018-11-28 08:58:27 +00:00

41 KiB

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