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Switch to gold linker on android x86, x86_64, arm

Authored by tberghammer on Dec 10 2015, 3:02 AM.

Description

Switch to gold linker on android x86, x86_64, arm

These architectures already using the gold linker for the android
framework and switching to gold gives us the opportunity to enable ICF.

Safe ICF (identical code folding) reduces the size of an optimized and
striped binary by ~5%.

Differential revision: http://reviews.llvm.org/D15379

llvm-svn: 255240

Details