[LLVMdev] Branch-like intrinsic

Edward Lee eslee3 at uiuc.edu
Mon Apr 14 14:50:09 PDT 2008

On Mon, Apr 14, 2008 at 5:37 PM, Chris Lattner <sabre at nondot.org> wrote:
>  The code generator does CFG simplification to handle cases where blocks
>  become dead during lowering.
Oh... is there a way to prevent that from happening? While %x is
always 1 and %T is always taken, %F isn't actually dead. There would
be a way (with another intrinsic) for control to flow into %F at the
point of..
br i1 %x, label %T, label %F

That's why I wanted the rest of the compiler to still know about the
potential flow into %F.


More information about the llvm-dev mailing list