[AMDGPU] Conditionally enable DAG combines for fminimum/fmaximum #81584
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fminimum/fmaximum are only legal on some subtargets. This patch only enables the DAG combines for fminimum3/fmaximum3 on those subtargets. Without this, the combine can kick in before legalization, and then nothing will legalize the target-specific fminimum3/fmaximum3 nodes.
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Other possible approaches:
I'm not sure which approach is best. |
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This probably isn't much use until #67301 lands. |
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fminimum/fmaximum are only legal on some subtargets. This patch only
enables the DAG combines for fminimum3/fmaximum3 on those subtargets.
Without this, the combine can kick in before legalization, and then
nothing will legalize the target-specific fminimum3/fmaximum3 nodes.