It is optimal at least up to 7 bits (I've tested all such cases)
This change to truncate() allows a little simplification to the multiplication code,
and it also makes multiplication optimal :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160512 91177308-0d34-0410-b5e6-96231b3b80d8
Make it always return APInts with the same bitwidth for the same ConstantRange bitwidth to simply clients
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160294 91177308-0d34-0410-b5e6-96231b3b80d8
assert(!"error message");
To:
assert(0 && "error message");
which is more consistant across the code base.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140234 91177308-0d34-0410-b5e6-96231b3b80d8
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead of modifying the
object in place.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121120 91177308-0d34-0410-b5e6-96231b3b80d8
Fix zeroExtend and signExtend to support empty sets, and to return the smallest
possible result set which contains the extension of each element in their
inputs. For example zext i8 [100, 10) to i16 is now [0, 256), not i16 [100, 10)
which contains 63446 members.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113187 91177308-0d34-0410-b5e6-96231b3b80d8
- remove ashr which never worked.
- fix lshr and shl and add tests.
- remove dead function "intersect1Wrapped".
- add a new sub method to subtract ranges, with test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110861 91177308-0d34-0410-b5e6-96231b3b80d8
Nuno Lopes
Craig Topper
Nick Lewycky
Benjamin Kramer
Richard Trieu
Frits van Bommel
Jay Foad
Owen Anderson
Dan Gohman