test/run_test.py: Improve output check of test 3

On some configurations, test 3 shows failures.  On passing
configurations, we see:

    Disassembly:
        code object: memory://547073#offset=0x1bceb520&size=3528
        loaded at: [0x744416090000-0x7444160937b1]
     => 0x744416091660:    s_code_end
        0x744416091664:    s_code_end
        0x744416091668:    s_code_end
        0x74441609166c:    s_code_end
        0x744416091670:    s_code_end
        0x744416091674:    s_code_end
        ...

In this case, the debug agent sees the PC of the wave in the buffer of
s_code_end instructions added as padding just at the end of the shader
code.  This is mostly because the last instruction emitted by the
compiler is `s_trap 2` (i.e. abort).  The compiler knows that the
execution does not return from this call, then does not emit anything
after it.  As a consequence, in this case dbgapi sees the wave's PC
outside of the kernel symbol.

The failing case on the other hand shows:

    Disassembly for function kernel_abort:
        code object: memory://810730#offset=0x1c966d0&size=3696
        loaded at: [0x7b84b2348000-0x7b84b234b8f1]
     => 0x7b84b2349664 <+100>:    s_sendmsg_rtn_b32 s0, sendmsg(MSG_RTN_GET_DOORBELL)
        0x7b84b2349668 <+104>:    s_mov_b32 ttmp2, m0
        0x7b84b234966c <+108>:    s_waitcnt lgkmcnt(0)
        0x7b84b2349670 <+112>:    s_and_b32 s0, s0, 0x3ff
        0x7b84b2349678 <+120>:    s_delay_alu instid0(SALU_CYCLE_1) | instskip(NEXT) | instid1(SALU_CYCLE_1)
        ...

On this configuration, there are instructions after the `s_trap 2`
instructions, so dbgapi sees the wave's PC still in the kernel_abort
symbol.

The test case is looking for the "Disassembly:" marker, which is only
seen when the PC is not within the symbol.

This patch changes look for either "Disassembly:\n" or "Disassembly for
function kernel_abort:\n", which should cover both possible cases.

Tested on gfx1030 and gfx1100.

Bug: SWDEV-512969
Change-Id: I25a7b74ad3daa6e6ec5bc3d679f12f2a91f829fc
(cherry picked from commit f1d3abe)

Author: lancesix

test/run-test.py

@@ -159,7 +159,8 @@ def check_test_3():
 
     # If the code object was not properly loaded, we should not have any
     # disassembly in the output
-    if "Disassembly:" not in err_str:
+    if ("Disassembly:\n" not in err_str
+            and "Disassembly for function kernel_abort:\n" not in err_str):
         found_error = True
 
     if (found_error):