[ValueTracking] Use APInt::isNegative instead of using operator[BitWidth-1]. NFCI
authorCraig Topper <craig.topper@gmail.com>
Thu, 23 Mar 2017 07:06:42 +0000 (07:06 +0000)
committerCraig Topper <craig.topper@gmail.com>
Thu, 23 Mar 2017 07:06:42 +0000 (07:06 +0000)
commit93683b6aff93b938c2d996a5b39ada20e12e751d
treeb355cad2293dd700400e0cf4672be331c8ee8788
parentd73c6b4ef8655e513f56bbfd47925ed8942446e3
[ValueTracking] Use APInt::isNegative instead of using operator[BitWidth-1]. NFCI

llvm-svn: 298584
llvm/lib/Analysis/ValueTracking.cpp