Flag to override the value imposed on the kernel by CL_DEVICE_MAX_PARAMETER_SIZE.

Change-Id: I55b72ac20b6a01a7ffbeabb6664febd45f764db3

Author: PawelJurek

IGC/Compiler/CISACodeGen/Platform.hpp

@@ -53,7 +53,10 @@ CPlatform(PLATFORM platform) {
 CPlatform() {}
 
 void setOclCaps(OCLCaps& caps) { m_OCLCaps = caps; }
-uint32_t getMaxOCLParameteSize() const { return m_OCLCaps.MaxParameterSize;  }
+uint32_t getMaxOCLParameteSize() const {
+  uint32_t limitFromFlag = IGC_GET_FLAG_VALUE(OverrideOCLMaxParamSize);
+  return limitFromFlag ? limitFromFlag : m_OCLCaps.MaxParameterSize;
+}
 void OverrideRevId(unsigned short newRevId)
 {
     m_platformInfo.usRevId = newRevId;

IGC/common/igc_flags.def

@@ -410,6 +410,7 @@ DECLARE_IGC_REGKEY(bool, EmitDebugRanges, false, "Emit .debug_ranges section whe
 DECLARE_IGC_REGKEY(bool, EmitDebugLoc, false, "Enable generation of .debug_loc section", false)
 DECLARE_IGC_REGKEY(bool, EnableA64WA, true, "Guarantee A64 load/store addres-hi is uniform", false)
 DECLARE_IGC_REGKEY(bool, EnableZEBinary, false,  "Enable output in ZE binary format", true)
+DECLARE_IGC_REGKEY(bool, OverrideOCLMaxParamSize, 0,  "Override the value imposed on the kernel by CL_DEVICE_MAX_PARAMETER_SIZE. Value in bytes, if value==0 no override happens.", true)
 
 DECLARE_IGC_GROUP("Generating precompiled headers")
 DECLARE_IGC_REGKEY(bool, ApplyConservativeRastWAHeader, true, "Apply WaConservativeRasterization for the platforms enabled", false)