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i965/vec4: Implement b2f and b2i using negation.

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Curro added this in commit 3ee2daf23d (before the vec4/NIR backend was
added) but it was missed in the new NIR backend. Add it there as well.

instructions in affected programs:     1857 -> 1810 (-2.53%)
helped:                                15

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
This commit is contained in:
Matt Turner
2015-10-09 12:27:04 -07:00
parent 9fe458335f
commit 4642d53a03
1 changed files with 1 additions and 7 deletions
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src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+1 -7
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@@ -1237,14 +1237,8 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
break;
case nir_op_b2i:
emit(AND(dst, op[0], src_reg(1)));
break;
case nir_op_b2f:
op[0].type = BRW_REGISTER_TYPE_D;
dst.type = BRW_REGISTER_TYPE_D;
emit(AND(dst, op[0], src_reg(0x3f800000u)));
dst.type = BRW_REGISTER_TYPE_F;
emit(MOV(dst, negate(op[0])));
break;
case nir_op_f2b: