[PATCH] D65303: [BPI] Adjust the probability for floating point unordered comparison

[Guozhi Wei via Phabricator via llvm-commits]

Carrot created this revision.
Carrot added reviewers: ebrevnov, bkramer.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Since NaN is very rare in normal programs, so the probability for floating point unordered comparison should be extremely small. Current probability is 3/8, it is too large, this patch changes it to a tiny number.


Repository:
  rL LLVM

https://reviews.llvm.org/D65303

Files:
  lib/Analysis/BranchProbabilityInfo.cpp
  test/Analysis/BranchProbabilityInfo/fcmp.ll
  test/CodeGen/SystemZ/call-05.ll

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