[SYCL][NewPM] Add SYCLLowerWGLocalMemory pass into optimization (#5301)

Add `SYCLLowerWGLocalMemory` pass into clang optimizations pipeline when using
new Pass Manager.

Signed-off-by: Mikhail Lychkov <mikhail.lychkov@intel.com>

clang/lib/CodeGen/BackendUtil.cpp

@@ -1479,6 +1479,17 @@ void EmitAssemblyHelper::RunOptimizationPipeline(
     MPM.addPass(SYCLMutatePrintfAddrspacePass());
   }
 
+  // Allocate static local memory in SYCL kernel scope for each allocation
+  // call. It should be called after inlining pass.
+  if (LangOpts.SYCLIsDevice) {
+    // Group local memory pass depends on inlining. Turn it on even in case if
+    // all llvm passes or SYCL early optimizations are disabled.
+    // FIXME: Remove this workaround when dependency on inlining is eliminated.
+    if (CodeGenOpts.DisableLLVMPasses)
+      MPM.addPass(AlwaysInlinerPass(false));
+    MPM.addPass(SYCLLowerWGLocalMemoryPass());
+  }
+
   // Add a verifier pass if requested. We don't have to do this if the action
   // requires code generation because there will already be a verifier pass in
   // the code-generation pipeline.

clang/test/CodeGenSYCL/group-local-memory-legacy-pm.cpp

@@ -0,0 +1,24 @@
+// Check that SYCLLowerWGLocalMemory pass is added to the SYCL device
+// compilation pipeline with the inliner pass.
+
+// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm \
+// RUN:   -flegacy-pass-manager -mllvm -debug-pass=Structure %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck %s -check-prefixes=CHECK-INL,CHECK
+
+// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm -O0 \
+// RUN:   -flegacy-pass-manager -mllvm -debug-pass=Structure %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck %s --check-prefixes=CHECK-ALWINL,CHECK
+
+// Check that AlwaysInliner pass is always run for compilation of SYCL device
+// target code, even if all optimizations are disabled.
+
+// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm -disable-llvm-passes \
+// RUN:   -flegacy-pass-manager -mllvm -debug-pass=Structure %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck %s --check-prefixes=CHECK-ALWINL,CHECK
+// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm -fno-sycl-early-optimizations \
+// RUN:   -flegacy-pass-manager -mllvm -debug-pass=Structure %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck %s --check-prefixes=CHECK-ALWINL,CHECK
+
+// CHECK-INL: Function Integration/Inlining
+// CHECK-ALWINL: Inliner for always_inline functions
+// CHECK: Replace __sycl_allocateLocalMemory with allocation of memory in local address space

clang/test/CodeGenSYCL/group-local-memory.cpp

@@ -1,26 +1,24 @@
 // Check that SYCLLowerWGLocalMemory pass is added to the SYCL device
-// compilation pipeline with the inliner pass.
+// compilation pipeline with the inliner pass (new Pass Manager).
 
 // RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm \
-// RUN:   -mllvm -debug-pass=Structure %s -o - 2>&1 \
-// RUN:   | FileCheck %s
-// CHECK: Function Integration/Inlining
-// CHECK: Replace __sycl_allocateLocalMemory with allocation of memory in local address space
+// RUN:   -fno-legacy-pass-manager -mdebug-pass Structure %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck %s -check-prefixes=CHECK-INL,CHECK
+
+// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm -O0 \
+// RUN:   -fno-legacy-pass-manager -mdebug-pass Structure %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck %s --check-prefixes=CHECK-ALWINL,CHECK
 
 // Check that AlwaysInliner pass is always run for compilation of SYCL device
 // target code, even if all optimizations are disabled.
 
-// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm \
-// RUN:   -mllvm -debug-pass=Structure %s -o - -disable-llvm-passes 2>&1 \
-// RUN:   | FileCheck %s --check-prefix=CHECK-NOPASSES
-// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm \
-// RUN:   -mllvm -debug-pass=Structure %s -o - -fno-sycl-early-optimizations 2>&1 \
-// RUN:   | FileCheck %s --check-prefix=CHECK-NOPASSES
-// CHECK-NOPASSES: Inliner for always_inline functions
-// CHECK-NOPASSES: Replace __sycl_allocateLocalMemory with allocation of memory in local address space
+// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm -disable-llvm-passes \
+// RUN:   -fno-legacy-pass-manager -mdebug-pass Structure %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck %s --check-prefixes=CHECK-ALWINL,CHECK
+// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm -fno-sycl-early-optimizations \
+// RUN:   -fno-legacy-pass-manager -mdebug-pass Structure %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck %s --check-prefixes=CHECK-ALWINL,CHECK
 
-// RUN: %clang_cc1 -fsycl-is-device -triple spir64-unknown-unknown -emit-llvm \
-// RUN:   -mllvm -debug-pass=Structure %s -o - -O0 2>&1 \
-// RUN:   | FileCheck %s --check-prefix=CHECK-O0opt
-// CHECK-O0opt: Inliner for always_inline functions
-// CHECK-O0opt: Replace __sycl_allocateLocalMemory with allocation of memory in local address space
+// CHECK-INL: Running pass: ModuleInlinerWrapperPass on [module]
+// CHECK-ALWINL: Running pass: AlwaysInlinerPass on [module]
+// CHECK: Running pass: SYCLLowerWGLocalMemoryPass on [module]

sycl/test/check_device_code/id_queries_fit_int.cpp

@@ -1,5 +1,5 @@
-// RUN: %clangxx -fsycl-device-only -fsycl-id-queries-fit-in-int -fno-sycl-early-optimizations -S -o %t.ll %s
-// RUN: FileCheck %s --input-file %t.ll
+// RUN: %clangxx -fsycl-device-only -fsycl-id-queries-fit-in-int -fno-sycl-early-optimizations -S %s -flegacy-pass-manager -o - | FileCheck %s
+// RUN: %clangxx -fsycl-device-only -fsycl-id-queries-fit-in-int -fno-sycl-early-optimizations -S %s -fno-legacy-pass-manager -o - | FileCheck %s
 
 #include <CL/sycl.hpp>