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[SimplifyLibCalls] Fix a typo

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cbrt(sqrt(x)) calculates the sixth root, not the ninth root.
cbrt(cbrt(x)) calculates the ninth root.

llvm-svn: 246046
This commit is contained in:
David Majnemer
2015-08-26 18:30:16 +00:00
parent 3a56363aec
commit 3354fe473f
1 changed files with 1 additions and 1 deletions
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llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
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@@ -2202,7 +2202,7 @@ void LibCallSimplifier::replaceAllUsesWith(Instruction *I, Value *With) {
// cbrt:
// * cbrt(expN(X)) -> expN(x/3)
// * cbrt(sqrt(x)) -> pow(x,1/6)
// * cbrt(sqrt(x)) -> pow(x,1/9)
// * cbrt(cbrt(x)) -> pow(x,1/9)
//
// exp, expf, expl:
// * exp(log(x)) -> x