nvir/gv100: initial support

v2:
- add TargetGV100::isBarrierRequired() for OP_BREV
- use NV50_IR_SUBOP_LOP3_LUT() convenience macro where it makes sense
- separated out nir_lower_idiv into its own commit
- make use of the shared function to generate compiler options
- disable lower_fpow, nir's lowering is broken
v3:
- use replaceCvt() instead of custom NEG/ABS/SAT lowering
v4:
- remove WAR from peephole, not needed now we're using replaceCvt()

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5377>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
index 8e6b9775d79..f100445e9d0 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
@@ -898,6 +898,8 @@ NVC0LoweringPass::visit(Function *fn)
       gpEmitAddress = bld.loadImm(NULL, 0)->asLValue();
       if (fn->cfgExit) {
          bld.setPosition(BasicBlock::get(fn->cfgExit)->getExit(), false);
+         if (prog->getTarget()->getChipset() >= NVISA_GV100_CHIPSET)
+            bld.mkOp1(OP_FINAL, TYPE_NONE, NULL, gpEmitAddress)->fixed = 1;
          bld.mkMovToReg(0, gpEmitAddress);
       }
    }