Jakob Stoklund Olesen c5c4e96f3e Revert remaining part of r93200: "Disable folding sext(trunc(x)) -> x"
This fixes PR5997.

These transforms were disabled because codegen couldn't deal with other
uses of trunc(x). This is now handled by the peephole pass.

This causes no regressions on x86-64.

llvm-svn: 159003
2012-06-22 16:36:43 +00:00
..
2012-06-08 22:30:05 +00:00