Argument of "intel_sub_group_ballot" was promoted from i1 to i8 which caused linker issues

The argument of this function was promoted from

`declare (..) spir_func i32 @intel_sub_group_ballot(i1 zeroext)`
to
`declare spir_func i32 @intel_sub_group_ballot(i8 zeroext)`

which caused problems during BiF linking due to mismatch.
This PR adds yet another rule to the exceptions.

Additionally "annotated_function" extraction required adjustments for opaque pointers.

Author: bokrzesi

IGC/AdaptorOCL/dllInterfaceCompute.cpp

@@ -880,7 +880,20 @@ void RebuildGlobalAnnotations(IGC::OpenCLProgramContext &oclContext, Module *pKe
   auto annotations_array = cast<ConstantArray>(globalAnnotations->getOperand(0));
   for (const auto &op : annotations_array->operands()) {
     auto annotation_struct = cast<ConstantStruct>(op.get());
-    auto annotated_function = cast<Function>(annotation_struct->getOperand(0)->getOperand(0));
+    auto operand0 = annotation_struct->getOperand(0);
+
+    Function *annotated_function = nullptr;
+
+    // On typed pointers it was: struct -> bitcast -> functionPointer
+    // On opaque pointer the bitcast is just "ptr", so it is: struct -> functionPointer
+    // Non-opaque pointers path should be removed after transition to opaque pointers.
+    if (IGCLLVM::isOpaquePointerTy(operand0->getType())) {
+      annotated_function = cast<Function>(operand0);
+    } else {
+      annotated_function = cast<Function>(operand0->getOperand(0));
+    }
+
+    IGC_ASSERT_MESSAGE(annotated_function, "Annotated function was not found!");
 
     if (requiresRecompilation(annotated_function)) {
       newGlobalAnnotations.push_back(annotation_struct);

IGC/AdaptorOCL/preprocess_spvir/PromoteBools.cpp

@@ -501,7 +501,9 @@ Function *PromoteBools::promoteFunction(Function *function) {
   }
 
 #if !defined(WDDM_ANDROID_IGC)
-  if (BiFManager::BiFManagerHandler::IsBiF(function) || function->getName().startswith("__builtin_IB_")) {
+  if (BiFManager::BiFManagerHandler::IsBiF(function)
+    || function->getName().startswith("__builtin_IB_")
+    || function->getName() == "intel_sub_group_ballot") {
     return function;
   }
 #endif

IGC/Compiler/tests/PromoteBools/excluded_intrinsics.ll

@@ -0,0 +1,26 @@
+;=========================== begin_copyright_notice ============================
+;
+; Copyright (C) 2025 Intel Corporation
+;
+; SPDX-License-Identifier: MIT
+;
+;============================ end_copyright_notice =============================
+
+; RUN: igc_opt --opaque-pointers -igc-promote-bools -S %s | FileCheck %s
+; ------------------------------------------------
+; Ensure that "intel_sub_group_ballot" is excluded from i1 to i8 promotion.
+; ------------------------------------------------
+
+; CHECK: define dso_local spir_func i32 @intel_sub_group_ballot(i1 noundef zeroext %0)
+; CHECK: [[TMP0:%[0-9]+]] = tail call spir_func i32 @__builtin_IB_WaveBallot(i1
+
+; Function Attrs: convergent norecurse nounwind
+define dso_local spir_func i32 @intel_sub_group_ballot(i1 noundef zeroext %0) {
+  %2 = tail call spir_func i32 @__builtin_IB_WaveBallot(i1 noundef zeroext %0)
+  ret i32 %2
+}
+
+; CHECK: declare spir_func i32 @__builtin_IB_WaveBallot(i1 noundef zeroext)
+
+; Function Attrs: convergent nounwind
+declare spir_func i32 @__builtin_IB_WaveBallot(i1 noundef zeroext) local_unnamed_addr