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3 Commits

Author SHA1 Message Date
Sanjay Patel 63b1028953 [InstCombine] add nnan requirement for sqrt(x) * sqrt(y) -> sqrt(x*y) 
This is similar to D43765.

llvm-svn: 327797
 2018-03-18 14:32:54 +00:00
Sanjay Patel d32104e1b2 [InstCombine] allow fmul-sqrt folds with less than full -ffast-math 
Also, add a Builder method for intrinsics to reduce code duplication for clients.

llvm-svn: 325960
 2018-02-23 21:16:12 +00:00
Dmitry Venikov a58d8deb3a [InstCombine] Missed optimization in math expression: squashing sqrt functions 
Summary: This patch enables folding under -ffast-math flag sqrt(a) * sqrt(b) -> sqrt(a*b)

Reviewers: hfinkel, spatel, davide

Reviewed By: spatel, davide

Subscribers: davide, llvm-commits

Differential Revision: https://reviews.llvm.org/D41322

llvm-svn: 321637
 2018-01-02 05:58:11 +00:00