igc-1.0.3445

• Handle the splitting of Vx1
• Modify spill/fill intrinsics' offset units.
• Support for hardware native atomic subtract.
• Add interface with dualsubslice information.
• Adding a configuration flag for enforcing double precision floating point emulation on unsupported platforms as an experimental feature.
• Fix live-interval in debug info when trivial RA is run.
• Fixing regression caused by wrong rounding.
• Don't do integer mad if thre are more than 1 immediate sources.
• Avoid splitting an instruction with byte dst into even/odd when one of its sources has vertical stride 32.
• Cache debug source line information during assembly dump.
• Fix for subgroup function resolution.
• Add Induction Variable Elimination pass.
• Remove redundant goto instructions.

Ubuntu 18.04 binary packages for LLVM9/Clang9 are included.