[PATCH] D48569: [AMDGPU] Convert rcp to rcp_iflag

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: lib/Target/AMDGPU/SIISelLowering.cpp:6641
+                         N0.getOpcode() == ISD::SINT_TO_FP)) {
+    return DCI.DAG.getNode(AMDGPUISD::RCP_IFLAG, SDLoc(N), VT, N0);
+  }
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Preserve fast math flags?


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Comment at: lib/Target/AMDGPU/SIISelLowering.cpp:6644
+
+  return AMDGPUTargetLowering::PerformDAGCombine(N, DCI);
+}
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This can just return SDValue(). The base PerformDAGCombine isn't going to do anything here


https://reviews.llvm.org/D48569