| commit | 983cfca15dab3fb1731fb3c970f9d058173d8ef3 | [log] [tgz] |
|---|---|---|
| author | James Molloy <james.molloy@arm.com> | Wed Sep 02 17:25:25 2015 +0000 |
| committer | James Molloy <james.molloy@arm.com> | Wed Sep 02 17:25:25 2015 +0000 |
| tree | 0cf783352d6073bb5f78d1d1a498ae89063ac864 | |
| parent | a1bc1c274da23263d1185ec2352d15faf65bba2e [diff] |
[ValueTracking] Look through casts when both operands are casts. We only looked through casts when one operand was a constant. We can also look through casts when both operands are non-constant, but both are in fact the same cast type. For example: %1 = icmp ult i8 %a, %b %2 = zext i8 %a to i32 %3 = zext i8 %b to i32 %4 = select i1 %1, i32 %2, i32 %3 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246678 91177308-0d34-0410-b5e6-96231b3b80d8