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Not all code paths of this optimization depend on there being only one user of the first operand; and those code paths already have their own check for this. Fossil DB stats on Navi 21: Totals from 477 (0.60% of 79395) affected shaders: Instrs: 995901 -> 995341 (-0.06%); split: -0.06%, +0.00% CodeSize: 5218856 -> 5216816 (-0.04%); split: -0.04%, +0.00% Latency: 16340256 -> 16338799 (-0.01%); split: -0.01%, +0.00% InvThroughput: 3044975 -> 3044871 (-0.00%); split: -0.00%, +0.00% Copies: 95047 -> 95071 (+0.03%) SALU: 150345 -> 149785 (-0.37%); split: -0.38%, +0.01% Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Georg Lehmann <dadschoorse@gmail.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28545> |
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