[PATCH] D60921: [GlobalISel] Add a G_FNEARBYINT opcode

[Jessica Paquette via Phabricator via llvm-commits]

paquette created this revision.
paquette added a reviewer: aemerson.
Herald added subscribers: Petar.Avramovic, javed.absar, kristof.beyls, rovka.
Herald added a project: LLVM.

For eventually selecting llvm.nearbyint. Equivalent to the SelectionDAG nearbyint node.

      

Update legalizer-info-validation.mir.


https://reviews.llvm.org/D60921

Files:
  llvm/include/llvm/Support/TargetOpcodes.def
  llvm/include/llvm/Target/GenericOpcodes.td
  llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
  llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir


Index: llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir
===================================================================
--- llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir
+++ llvm/test/CodeGen/AArch64/GlobalISel/legalizer-info-validation.mir
@@ -346,6 +346,9 @@
 # DEBUG: .. type index coverage check SKIPPED: user-defined predicate detected
 #
 # DEBUG-NEXT: G_FFLOOR (opcode {{[0-9]+}}): 1 type index
+# DEBUG: .. type index coverage check SKIPPED: user-defined predicate detected
+#
+# DEBUG-NEXT: G_FNEARBYINT (opcode {{[0-9]+}}): 1 type index
 # DEBUG: .. type index coverage check SKIPPED: no rules defined
 
 # CHECK-NOT: ill-defined
Index: llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
===================================================================
--- llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
+++ llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
@@ -95,6 +95,7 @@
 def : GINodeEquiv<G_FABS, fabs>;
 def : GINodeEquiv<G_FSQRT, fsqrt>;
 def : GINodeEquiv<G_FFLOOR, ffloor>;
+def : GINodeEquiv<G_FNEARBYINT, fnearbyint>;
 
 // Broadly speaking G_LOAD is equivalent to ISD::LOAD but there are some
 // complications that tablegen must take care of. For example, Predicates such
Index: llvm/include/llvm/Target/GenericOpcodes.td
===================================================================
--- llvm/include/llvm/Target/GenericOpcodes.td
+++ llvm/include/llvm/Target/GenericOpcodes.td
@@ -592,6 +592,13 @@
   let hasSideEffects = 0;
 }
 
+// Floating point round to the nearest integer.
+def G_FNEARBYINT : GenericInstruction {
+  let OutOperandList = (outs type0:$dst);
+  let InOperandList = (ins type0:$src1);
+  let hasSideEffects = 0;
+}
+
 //------------------------------------------------------------------------------
 // Opcodes for LLVM Intrinsics
 //------------------------------------------------------------------------------
Index: llvm/include/llvm/Support/TargetOpcodes.def
===================================================================
--- llvm/include/llvm/Support/TargetOpcodes.def
+++ llvm/include/llvm/Support/TargetOpcodes.def
@@ -536,6 +536,9 @@
 /// Floating point floor.
 HANDLE_TARGET_OPCODE(G_FFLOOR)
 
+/// Floating point round to nearest integer.
+HANDLE_TARGET_OPCODE(G_FNEARBYINT)
+
 /// Generic AddressSpaceCast.
 HANDLE_TARGET_OPCODE(G_ADDRSPACE_CAST)
 


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