[Hexagon] [CMake] Fix v66 build issue

[quic-sanirudh]

This patch fixes the issue mentioned in #17163.

The issue was because some files that are built into the runtime depend on architecture features that are only available starting from v68. Hence, we should not link them into the runtime if the architecture mentioned is v66 or v65.

[chayliu-ecarx]

with SDK4.5 and added your modifications about the cmake file, building errors like this:

Hexagon_SDK_4_5/libs/qhl_hvx/inc/internal/qhmath_hvx_vector.h:837:66: error: use of undeclared identifier 'Q6_Vsf_equals_Vqf32' vout_linear_interp = Q6_V_vmux_QVV(pred_linear_interp_right, Q6_Vsf_equals_Vqf32(output_linear_interp_right_vqf32), vout_linear_interp);

This patch fixes the issue mentioned in #17163.

The issue was because some files that are built into the runtime depend on architecture features that are only available starting from v68. Hence, we should not link them into the runtime if the architecture mentioned is v66 or v65.

with SDK4.5 and added your modifications about the cmake file, building errors like this:

Hexagon_SDK_4_5/libs/qhl_hvx/inc/internal/qhmath_hvx_vector.h:837:66: error: use of undeclared identifier 'Q6_Vsf_equals_Vqf32'
vout_linear_interp = Q6_V_vmux_QVV(pred_linear_interp_right, Q6_Vsf_equals_Vqf32(output_linear_interp_right_vqf32), vout_linear_interp);

[chayliu-ecarx]

after adding the following cmake modification:

 if((USE_HEXAGON_QHL) AND (${supported_arch_index} GREATER -1))

building succeed!

[quic-sanirudh]

after adding the following cmake modification:

 if((USE_HEXAGON_QHL) AND (${supported_arch_index} GREATER -1))

building succeed!

Right, the problem is that Starting 4.0, Hexagon SDK supports v68, so v68 libraries are also included in QHL_HVX libs. Excluding just the files not supported for v68 when we mention a lower architecture is a problem because the exact files that need to be excluded changes with each Hexagon SDK release. The best way is to just use Hexagon SDK 3.5 which is the last version that does not have v68 support and so it should work without any change. Or the other option is to pass USE_HEXAGON_QHL=OFF in your cmake command

[quic-sanirudh]

@tvm-bot rerun

[quic-sanirudh]

cc @csullivan @abhikran-quic

[abhikran-quic]

LGTM. Thank you @quic-sanirudh!