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Author SHA1 Message Date
Andrew Kaylor 647025f9e1 [InstSimplify] Don't constant fold or DCE calls that are marked nobuiltin 
Differential Revision: https://reviews.llvm.org/D33737

llvm-svn: 305132
 2017-06-09 23:18:11 +00:00
NAKAMURA Takumi b4eef1fa4a llvm/test/Transforms/DCE/calls-errno.ll: Suppress checking @pow(+0,-1). 
It depends on host's pow(3), and mingw's pow doesn't raise any errors, just returns +INF.

llvm-svn: 286005
 2016-11-04 18:50:45 +00:00
Eli Friedman b6befc3bc4 DCE math library calls with a constant operand. 
On platforms which use -fmath-errno, math libcalls without any uses
require some extra checks to figure out if they are actually dead.

Fixes https://llvm.org/bugs/show_bug.cgi?id=30464 .

Differential Revision: https://reviews.llvm.org/D25970

llvm-svn: 285857
 2016-11-02 20:48:11 +00:00