[PATCH] D153258: AMDGPU: Optimize set_rounding if input is known to fit in 2 bits

[Jay Foad via Phabricator via llvm-commits]

foad added inline comments.


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Comment at: llvm/lib/Target/AMDGPU/SIISelLowering.cpp:3618
+      SDValue BitTable = DAG.getConstant(
+        AMDGPU::FltRoundToHWConversionTableStandardOnly, SL, MVT::i32);
 
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This is just `AMDGPU::FltRoundToHWConversionTable & 0xFFFF` isn't it? I'm not sure it's worth having all the boilerplate in `SIModeRegisterDefaults.cpp` to define another table.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D153258/new/

https://reviews.llvm.org/D153258