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r600/shader: only emit add instruction if param has a value.

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Just saves a pointless a = a + 0;

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2018-01-10 02:56:15 +00:00
parent 2bd01adf14
commit 7efcafce7c
1 changed files with 8 additions and 6 deletions
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14
src/gallium/drivers/r600/r600_shader.c
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@ -2864,12 +2864,14 @@ static int r600_tess_factor_read(struct r600_shader_ctx *ctx,
if (r)
return r;
r = single_alu_op2(ctx, ALU_OP2_ADD_INT,
temp_reg, 0,
temp_reg, 0,
V_SQ_ALU_SRC_LITERAL, param * 16);
if (r)
return r;
if (param) {
r = single_alu_op2(ctx, ALU_OP2_ADD_INT,
temp_reg, 0,
temp_reg, 0,
V_SQ_ALU_SRC_LITERAL, param * 16);
if (r)
return r;
}
do_lds_fetch_values(ctx, temp_reg, dreg, ((1u << nc) - 1));
return 0;