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Author SHA1 Message Date
Zi Xuan Wu ac79ef8f0e [PowerPC] More precise exploitation of P9 maddld instruction when operands are constant 
There are 3 operands of maddld, (add (mul %1, %2), %3) and sometimes
they are constant. If there is constant operand, it takes extra li to 
materialize the operand, and one more extra register too. So it's not 
profitable to use maddld to optimize mul-add pattern.

Differential Revision: https://reviews.llvm.org/D60181

llvm-svn: 358253
 2019-04-12 05:21:31 +00:00
Chen Zheng ffece2dfcf [PowerPC] exploit P9 instruction maddld. 
Differential Revision: https://reviews.llvm.org/D58364

llvm-svn: 354427
 2019-02-20 02:30:06 +00:00