Using timer register

Discussion created by MohamedAhmed on Jul 27, 2010
Latest reply on Aug 10, 2010 by Jawed

I'm trying to profile some operations inside the SIMD at the level of cycles. I know that I should use the timer register (Tmr). I can read its value. However, I get the same value before and after instructions I'm trying to profile. Below is my code.

    "il_ps_2_0                                                                              \n"
    "dcl_input_interp(linear) v0.xy__                                                       \n"
    "sample_resource(0)_sampler(0) r5, vWinCoord0.xyxx\n"
    "dcl_output_generic o0.xy                                                                  \n"
    "dcl_cb cb0[1]                                                                          \n"
    "dcl_resource_id(0)_type(2d,unnorm)_fmtx(unknown)_fmty(unknown)_fmtz(unknown)_fmtw(unknown)     \n"
    "sample_resource(0)_sampler(0) r0, v0.xyxx                                              \n"
    "mov r1.xy__, Tmr.xy                                                                       \n"
      "dmul o0, r0, v0.x  \n"
    "mov r2.xy__, Tmr.xy  \n"
    "inegate r4.x___, r1.x\n"                                                      
    "iadd r3.x___, r2.x,r4.x \n"
    "mov o0.x, r1.x\n"
    "mov o0.y, r2.x\n"