This little series adds int64 support to Vulkan on Broadwell and newer hardware. In theory, we could also support it on gen7 but that requires more lowering code to be written.
Most of this series is the nir_builder control-flow stuff that I sent out earlier with a small addition to make it easy to add phi instructions after an if statement. Next comes an int64 lowering pass in NIR that mirrors the GLSL IR pass written by Ian. The second-to-last patch makes i965 use the new NIR pass rather than the GLSL IR one. There are two reasons for this. First, is that GL gets better int64 test coverage than Vulkan does at the moment. Second, this means that we get at least one run of the NIR optimization loop (including nir_opt_algebraic) before we do 64-bit integer lowering and we may be able to get rid of some instructions instead of having to lower them. Finally, it turns it in in the Vulkan driver for gen8+. Once the lowering pass gets expanded to handle the rest of the integer operations (maybe a good noob task?), we can turn it on for gen7. Jason Ekstrand (8): nir/builder: Add support for easily building control-flow glsl/nir: Use nir_builder's new control-flow helpers nir/lower_gs_intrinsics: Use nir_builder control-flow helpers nir/lower_indirect: Use nir_builder control-flow helpers spirv: Use nir_builder for control flow nir: Add a simple int64 lowering pass i965: Do int64 lowering in NIR anv: Advertise shaderInt64 on Broadwell and above src/compiler/Makefile.sources | 1 + src/compiler/glsl/glsl_to_nir.cpp | 38 ++-- src/compiler/nir/nir.h | 11 ++ src/compiler/nir/nir_builder.h | 95 +++++++++ src/compiler/nir/nir_lower_gs_intrinsics.c | 9 +- src/compiler/nir/nir_lower_indirect_derefs.c | 35 +--- src/compiler/nir/nir_lower_int64.c | 275 +++++++++++++++++++++++++++ src/compiler/spirv/vtn_cfg.c | 45 ++--- src/intel/vulkan/anv_device.c | 2 +- src/mesa/drivers/dri/i965/brw_link.cpp | 5 - src/mesa/drivers/dri/i965/brw_nir.c | 7 + 11 files changed, 423 insertions(+), 100 deletions(-) create mode 100644 src/compiler/nir/nir_lower_int64.c -- 2.5.0.400.gff86faf _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
