Dan Gohman 038d02e74e Implement more aggressive folding of add operand lists when ...

they contain multiplications of constants with add operations.
This helps simplify several kinds of things; in particular it
helps simplify expressions like ((-1 * (%a + %b)) + %a) to %b,
as expressions like this often come up in loop trip count
computations.

llvm-svn: 73361

2009-06-14 22:58:51 +00:00

1.1 KiB

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