[cfe-commits] r55299 - in /cfe/trunk/lib: AST/Expr.cpp CodeGen/CGExprConstant.cpp

Chris Lattner clattner at apple.com
Mon Aug 25 12:10:49 CDT 2008


On Aug 24, 2008, at 8:27 PM, Anders Carlsson wrote:

> Author: andersca
> Date: Sun Aug 24 22:27:15 2008
> New Revision: 55299
>
> URL: http://llvm.org/viewvc/llvm-project?rev=55299&view=rev
> Log:
> Handle emitting __builtin_huge_valf as a constant expr.

I don't think that this is the right place to put this.  For example,  
it doesn't handle this (crazy) case:

   switch (...) {
   case (int) __builtin_huge_valf():
     ...

I think it would be better to have AST/ExprConstant.cpp handle  
constant folding of builtins, and have CGExprConstant.cpp just call  
into the constant folding routines when it gets a scalar or complex  
element to initialize.  This would reduce CGExprConstant.cpp to  
handling the aggregate case, which is what makes the most sense for it  
to do anyway.

What do you think?

-Chris



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