[SPIR-V] Set non-kernel function linkage type via OpDecorate for all linkage types except for static functions (#91598)

This PR fixes the issue
#91595 by setting non-kernel
function linkage type via OpDecorate for all linkage types except for
static functions. A new test case is added.

Author: VyacheslavLevytskyy

llvm/lib/Target/SPIRV/SPIRVCallLowering.cpp

@@ -430,8 +430,8 @@ bool SPIRVCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
                    .addImm(static_cast<uint32_t>(executionModel))
                    .addUse(FuncVReg);
     addStringImm(F.getName(), MIB);
-  } else if (F.getLinkage() == GlobalValue::LinkageTypes::ExternalLinkage ||
-             F.getLinkage() == GlobalValue::LinkOnceODRLinkage) {
+  } else if (F.getLinkage() != GlobalValue::InternalLinkage &&
+             F.getLinkage() != GlobalValue::PrivateLinkage) {
     SPIRV::LinkageType::LinkageType LnkTy =
         F.isDeclaration()
             ? SPIRV::LinkageType::Import

llvm/test/CodeGen/SPIRV/LinkOnceODR.ll renamed to llvm/test/CodeGen/SPIRV/linkage/LinkOnceODR.ll

@@ -0,0 +1,16 @@
+; RUN: llc -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+
+; CHECK-SPIRV: Capability Linkage
+; CHECK-SPIRV-DAG: OpName %[[#AbsFun:]] "abs"
+; CHECK-SPIRV-DAG: OpName %[[#ExternalFun:]] "__devicelib_abs"
+; CHECK-SPIRV-DAG: OpDecorate %[[#AbsFun]] LinkageAttributes "abs" Export
+; CHECK-SPIRV-DAG: OpDecorate %[[#ExternalFun]] LinkageAttributes "__devicelib_abs" Import
+
+define weak dso_local spir_func i32 @abs(i32 noundef %x) {
+entry:
+  %call = tail call spir_func i32 @__devicelib_abs(i32 noundef %x) #11
+  ret i32 %call
+}
+
+declare extern_weak dso_local spir_func i32 @__devicelib_abs(i32 noundef)