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radv: Lower 8bit isub_sat/usub_sat.

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Signed-off-by: Georg Lehmann <dadschoorse@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13895>
This commit is contained in:
Georg Lehmann 2021-11-20 14:33:20 +01:00 • committed by Marge Bot
parent 4e6667ea87
commit 55735ed728
1 changed files with 2 additions and 0 deletions
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2
src/amd/vulkan/radv_pipeline.c
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@ -4008,9 +4008,11 @@ lower_bit_size_callback(const nir_instr *instr, void *_)
case nir_op_ushr:
case nir_op_ishl:
case nir_op_uadd_sat:
case nir_op_usub_sat:
return (bit_size == 8 || !(chip >= GFX8 && nir_dest_is_divergent(alu->dest.dest))) ? 32
: 0;
case nir_op_iadd_sat:
case nir_op_isub_sat:
return bit_size == 8 || !nir_dest_is_divergent(alu->dest.dest) ? 32 : 0;
default: