[SPIR-V] Don't add linkage attributes for input variables (#132301)

Fixes #131878

Author: cassiebeckley

llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp

@@ -3993,7 +3993,7 @@ bool SPIRVInstructionSelector::loadVec3BuiltinInputID(
   // builtin variable.
   Register Variable = GR.buildGlobalVariable(
       NewRegister, PtrType, getLinkStringForBuiltIn(BuiltInValue), nullptr,
-      SPIRV::StorageClass::Input, nullptr, true, true,
+      SPIRV::StorageClass::Input, nullptr, true, false,
       SPIRV::LinkageType::Import, MIRBuilder, false);
 
   // Create new register for loading value.
@@ -4046,7 +4046,7 @@ bool SPIRVInstructionSelector::loadBuiltinInputID(
   // builtin variable.
   Register Variable = GR.buildGlobalVariable(
       NewRegister, PtrType, getLinkStringForBuiltIn(BuiltInValue), nullptr,
-      SPIRV::StorageClass::Input, nullptr, true, true,
+      SPIRV::StorageClass::Input, nullptr, true, false,
       SPIRV::LinkageType::Import, MIRBuilder, false);
 
   // Load uint value from the global variable.

llvm/test/CodeGen/SPIRV/hlsl-intrinsics/SV_DispatchThreadID.ll

@@ -16,7 +16,6 @@
 
 ; CHECK-DAG:        OpEntryPoint GLCompute {{.*}} %[[#GlobalInvocationId]]
 ; CHECK-DAG:        OpName %[[#GlobalInvocationId]] "__spirv_BuiltInGlobalInvocationId"
-; CHECK-DAG:        OpDecorate %[[#GlobalInvocationId]] LinkageAttributes "__spirv_BuiltInGlobalInvocationId" Import
 ; CHECK-DAG:        OpDecorate %[[#GlobalInvocationId]] BuiltIn GlobalInvocationId
 
 ; ModuleID = '-'

llvm/test/CodeGen/SPIRV/hlsl-intrinsics/SV_GroupID.ll

@@ -9,7 +9,6 @@
 
 ; CHECK-DAG:        OpEntryPoint GLCompute {{.*}} %[[#WorkgroupId]]
 ; CHECK-DAG:        OpName %[[#WorkgroupId]] "__spirv_BuiltInWorkgroupId"
-; CHECK-DAG:        OpDecorate %[[#WorkgroupId]] LinkageAttributes "__spirv_BuiltInWorkgroupId" Import
 ; CHECK-DAG:        OpDecorate %[[#WorkgroupId]] BuiltIn WorkgroupId
 
 target triple = "spirv-unknown-vulkan-library"

llvm/test/CodeGen/SPIRV/hlsl-intrinsics/SV_GroupThreadID.ll

@@ -16,7 +16,6 @@
 
 ; CHECK-DAG:        OpEntryPoint GLCompute {{.*}} %[[#LocalInvocationId]]
 ; CHECK-DAG:        OpName %[[#LocalInvocationId]] "__spirv_BuiltInLocalInvocationId"
-; CHECK-DAG:        OpDecorate %[[#LocalInvocationId]] LinkageAttributes "__spirv_BuiltInLocalInvocationId" Import
 ; CHECK-DAG:        OpDecorate %[[#LocalInvocationId]] BuiltIn LocalInvocationId
 
 ; ModuleID = '-'