Merge pull request #187 from bashbaug/function_control_bit_16
add function control bitfield reservation section
diff --git a/include/spirv/spir-v.xml b/include/spirv/spir-v.xml
index d1ebaab..f4c8add 100644
--- a/include/spirv/spir-v.xml
+++ b/include/spirv/spir-v.xml
@@ -185,6 +185,27 @@
<ids type="LoopControl" start="31" end="31" vendor="Khronos" comment="Reserved LoopControl bit, not available to vendors"/>
+ <!-- SECTION: SPIR-V Function Control Bit Reservations -->
+ <!-- Reserve ranges of bits in the function control 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 function control bits -->
+ <ids type="FunctionControl" start="0" end="15" vendor="Khronos" comment="Reserved FunctionControl bits, not available to vendors - see the SPIR-V Specification"/>
+ <ids type="FunctionControl" start="16" end="16" vendor="Intel" comment="Contact ben.ashbaugh@intel.com"/>
+ <ids type="FunctionControl" start="17" end="30" comment="Unreserved bits reservable for use by vendors"/>
+ <ids type="FunctionControl" start="31" end="31" vendor="Khronos" comment="Reserved FunctionControl bit, not available to vendors"/>
+
+
<!-- SECTION: SPIR-V FP Fast Math Mode Bit Reservations -->
<!-- Reserve ranges of bits in the "FP Fast Math Mode" bitfield.
Each vendor determines the use of values in their own ranges.
