Add xml section for memory operand bit allocation tracking, and reserve two bits for an upcoming Intel extension
diff --git a/include/spirv/spir-v.xml b/include/spirv/spir-v.xml
index c1c91ea..9354bf6 100644
--- a/include/spirv/spir-v.xml
+++ b/include/spirv/spir-v.xml
@@ -224,4 +224,25 @@
<ids type="FPFastMathMode" start="16" end="17" vendor="Intel" comment="Contact michael.kinsner@intel.com"/>
<ids type="FPFastMathMode" start="18" end="31" comment="Unreserved bits reservable for use by vendors"/>
+
+ <!-- SECTION: SPIR-V Memory Operand Bit Reservations -->
+ <!-- Reserve ranges of bits in the memory operands bitfield.
+
+ Each vendor determines the use of values in their own ranges.
+ Vendors are not required to disclose those uses. If the use of a
+ value is included in an extension that is adopted by a Khronos
+ extension or specification, then that value's use may be permanently
+ fixed as if originally reserved in a Khronos range.
+
+ The SPIR Working Group strongly recommends:
+ - Each value is used for only one purpose.
+ - All values in a range should be used before allocating a new range.
+ -->
+
+ <!-- Reserved memory operand bits -->
+ <ids type="MemoryOperand" start="0" end="15" vendor="Khronos" comment="Reserved MemoryOperand bits, not available to vendors - see the SPIR-V Specification"/>
+ <ids type="MemoryOperand" start="16" end="17" vendor="Intel" comment="Contact michael.kinsner@intel.com"/>
+ <ids type="MemoryOperand" start="18" end="30" comment="Unreserved bits reservable for use by vendors"/>
+ <ids type="MemoryOperand" start="31" end="31" vendor="Khronos" comment="Reserved MemoryOperand bit, not available to vendors"/>
+
</registry>
