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i965: Generate code for ir_binop_imul_high.

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v2: Make accumulator's type match the type of the operation. Noticed by
    Ken.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Matt Turner 2013-09-17 21:34:45 -07:00
parent 85154241d6
commit c4e6569fc8
3 changed files with 18 additions and 0 deletions
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1
src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp
View file

@ -233,6 +233,7 @@ ir_channel_expressions_visitor::visit_leave(ir_assignment *ir)
case ir_binop_add:
case ir_binop_sub:
case ir_binop_mul:
case ir_binop_imul_high:
case ir_binop_div:
case ir_binop_carry:
case ir_binop_borrow:

10
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
View file

@ -442,6 +442,16 @@ fs_visitor::visit(ir_expression *ir)
emit(MUL(this->result, op[0], op[1]));
}
break;
case ir_binop_imul_high: {
if (brw->gen >= 7 && dispatch_width == 16)
fail("16-wide explicit accumulator operands unsupported\n");
struct brw_reg acc = retype(brw_acc_reg(), this->result.type);
emit(MUL(acc, op[0], op[1]));
emit(MACH(this->result, op[0], op[1]));
break;
}
case ir_binop_div:
/* Floating point should be lowered by DIV_TO_MUL_RCP in the compiler. */
assert(ir->type->is_integer());

7
src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
View file

@ -1368,6 +1368,13 @@ vec4_visitor::visit(ir_expression *ir)
emit(MUL(result_dst, op[0], op[1]));
}
break;
case ir_binop_imul_high: {
struct brw_reg acc = retype(brw_acc_reg(), result_dst.type);
emit(MUL(acc, op[0], op[1]));
emit(MACH(result_dst, op[0], op[1]));
break;
}
case ir_binop_div:
/* Floating point should be lowered by DIV_TO_MUL_RCP in the compiler. */
assert(ir->type->is_integer());