address review comment

Author: whitneywhtsang

third_party/intel/cmake/3122.patch

@@ -1,8 +1,8 @@
 diff --git a/lib/SPIRV/SPIRVWriter.cpp b/lib/SPIRV/SPIRVWriter.cpp
-index ec4ec41f..6d89e29c 100644
+index ec4ec41f..b481609f 100644
 --- a/lib/SPIRV/SPIRVWriter.cpp
 +++ b/lib/SPIRV/SPIRVWriter.cpp
-@@ -401,13 +401,17 @@ SPIRVType *LLVMToSPIRVBase::transType(Type *T) {
+@@ -401,13 +401,23 @@ SPIRVType *LLVMToSPIRVBase::transType(Type *T) {
    }
 
    if (T->isBFloatTy()) {
@@ -15,14 +15,20 @@ index ec4ec41f..6d89e29c 100644
 -    return mapType(T, BM->addFloatType(16, FPEncodingBFloat16KHR));
 +    // Workaround for LTS2 driver.
 +    const char *driverVersion = std::getenv("INTEL_XPU_BACKEND_DRIVER_VERSION");
-+    if (driverVersion && std::string(driverVersion) != "1.6.33578+38") {
-+      BM->getErrorLog().checkError(
-+          BM->isAllowedToUseExtension(ExtensionID::SPV_KHR_bfloat16),
-+          SPIRVEC_RequiresExtension,
-+          "SPV_KHR_bfloat16\n"
-+          "NOTE: LLVM module contains bfloat type, translation of which "
-+          "requires this extension");
-+      return mapType(T, BM->addFloatType(16, FPEncodingBFloat16KHR));
++    if (driverVersion) {
++      int v0 = 0, v1 = 0, v2 = 0, v3 = 0;
++      sscanf(driverVersion, "%d.%d.%d+%d", &v0, &v1, &v2, &v3);
++      std::tuple<int, int, int, int> ver = {v0, v1, v2, v3};
++      std::tuple<int, int, int, int> minVer = {1, 6, 35096, 9};
++      if (ver >= minVer) {
++        BM->getErrorLog().checkError(
++            BM->isAllowedToUseExtension(ExtensionID::SPV_KHR_bfloat16),
++            SPIRVEC_RequiresExtension,
++            "SPV_KHR_bfloat16\n"
++            "NOTE: LLVM module contains bfloat type, translation of which "
++            "requires this extension");
++        return mapType(T, BM->addFloatType(16, FPEncodingBFloat16KHR));
++      }
 +    }
    }