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3 Commits

Author SHA1 Message Date
Duncan Sands fe24bd3a89 Add a NullFolder class that doesn't fold constants. 
This may be used as the second IRBuilder template
parameter, the idea being that people learning LLVM
may find it helpful (several people asked on IRC
if it was possible to turn off constant folding
because it made it hard for them to see what was
going on).  Compiles, but otherwise completely
untested.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54698 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-12 20:39:27 +00:00
Duncan Sands 20df07ba22 Point people to ConstantExpr and ConstantFolding, 
in case they get the wrong idea.  Fit in 80 columns.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54676 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-12 09:43:15 +00:00
Duncan Sands 1e7f7865eb Make it possible to use different constant 
folding policies with IRBuilder.  The default,
provided by ConstantFolder, is to do minimal
folding like now: what ConstantExpr provides.
An alternative is to use TargetFolder, which
uses target information to fold constants more.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54640 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-11 15:29:30 +00:00