[llvm] r314168 - [GlobalISel] Update the documentation and comment for G_[UN]MERGE_VALUES

[Quentin Colombet via llvm-commits]

Author: qcolombet
Date: Mon Sep 25 15:03:06 2017
New Revision: 314168

URL: http://llvm.org/viewvc/llvm-project?rev=314168&view=rev
Log:
[GlobalISel] Update the documentation and comment for G_[UN]MERGE_VALUES

In r296921, we added the G_[UN]MERGE_VALUES node, but did not update the
documentation. Fixing that.

NFC.

Modified:
    llvm/trunk/docs/GlobalISel.rst
    llvm/trunk/include/llvm/Target/GenericOpcodes.td

Modified: llvm/trunk/docs/GlobalISel.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/GlobalISel.rst?rev=314168&r1=314167&r2=314168&view=diff
==============================================================================
--- llvm/trunk/docs/GlobalISel.rst (original)
+++ llvm/trunk/docs/GlobalISel.rst Mon Sep 25 15:03:06 2017
@@ -304,6 +304,11 @@ As opposed to SelectionDAG, there are no
 Legalization is iterative, and all state is contained in GMIR.  To maintain the
 validity of the intermediate code, instructions are introduced:
 
+* ``G_MERGE_VALUES`` --- concatenate multiple registers of the same
+  size into a single wider register.
+
+* ``G_UNMERGE_VALUES`` --- extract multiple registers of the same size
+  from a single wider register.
 
 * ``G_EXTRACT`` --- extract a simple register (as contiguous sequences of bits)
   from a single wider register.

Modified: llvm/trunk/include/llvm/Target/GenericOpcodes.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/GenericOpcodes.td?rev=314168&r1=314167&r2=314168&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Target/GenericOpcodes.td (original)
+++ llvm/trunk/include/llvm/Target/GenericOpcodes.td Mon Sep 25 15:03:06 2017
@@ -511,6 +511,7 @@ def G_INSERT : Instruction {
   let hasSideEffects = 0;
 }
 
+/// Concatenante multiple registers of the same size into a wider register.
 def G_MERGE_VALUES : Instruction {
   let OutOperandList = (outs type0:$dst);
   let InOperandList = (ins variable_ops);