[all-commits] [llvm/llvm-project] c6b5ea: [Transforms] Expand optimizeTan to fold more inver...

[AtariDreams via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c6b5ea339d9f257b64f4ca468e447f0e29a909a4
      https://github.com/llvm/llvm-project/commit/c6b5ea339d9f257b64f4ca468e447f0e29a909a4
  Author: AtariDreams <83477269+AtariDreams at users.noreply.github.com>
  Date:   2024-02-06 (Tue, 06 Feb 2024)

  Changed paths:
    M llvm/include/llvm/Transforms/Utils/SimplifyLibCalls.h
    M llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
    R llvm/test/Transforms/InstCombine/tan-nofastmath.ll
    R llvm/test/Transforms/InstCombine/tan.ll
    A llvm/test/Transforms/InstCombine/trig.ll

  Log Message:
  -----------
  [Transforms] Expand optimizeTan to fold more inverse trig pairs (#77799)

optimizeTan has been renamed to optimizeTrigInversionPairs as a result.

Sadly, this is not mathematically true that all inverse pairs fold to x.
For example, asin(sin(x)) does not fold to x if x is over 2pi.