hipclang-3.2.0

hipclang-3.2.0

rocm-ocl-3.3.0

rocm-ocl-3.3.0

roc-ocl-3.1.0

roc-ocl-3.1.0

HCC for ROCm 3.0.0

[AMDGPU] Fix for AMDGPU MUL_I24 known bits calculation

At present, the code calculating known bits of AMDGPU MUL_I24 confuses
the concepts of "non-negative number" and "positive number".

In some situations, it results in incorrect code. I have a case where
the optimizer replaces the result of calculating MUL_I24(-5, 0) with -8.

Differential Revision: https://reviews.llvm.org/D70367

NB: patch was authored by ekuznetsov139; this patch is submitted prior to
the submission of the patch to llvm-trunk; there is agreement on the fix;
the lit test is still under revision. The patch is submitted to amd-stg-open-hcc
to resolve several high-priority internal bugs. Lastly, the lit test was tweaked
to fix a syntax error not yet corrected in the phab patch.

Change-Id: Iaced35ee4b97946ebb12515f08ea39b9bf5c48ca

roc-ocl-3.0.0

roc-ocl-3.0.0