Module: Mesa Branch: master Commit: 0a6811207fbe18d49c7ab95f93ed01f75ffcdda0 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=0a6811207fbe18d49c7ab95f93ed01f75ffcdda0
Author: Jason Ekstrand <[email protected]> Date: Thu Jan 14 12:08:57 2016 -0800 i965/vec4: Use UW type for multiply into accumulator on GEN8+ BDW adds the following restriction: "When multiplying DW x DW, the dst cannot be accumulator." Cc: "11.1,11.0" <[email protected]> Reviewed-by: Matt Turner <[email protected]> --- src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp index 0ae723f..4ee2ed4 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp @@ -1069,7 +1069,11 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr) case nir_op_umul_high: { struct brw_reg acc = retype(brw_acc_reg(8), dst.type); - emit(MUL(acc, op[0], op[1])); + if (devinfo->gen >=8) + emit(MUL(acc, op[0], retype(op[1], BRW_REGISTER_TYPE_UW))); + else + emit(MUL(acc, op[0], op[1])); + emit(MACH(dst, op[0], op[1])); break; } _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
