[PATCH] D94381: [test] Add Clang side tests for -fdebug-info-for-profiling

[Fangrui Song via Phabricator via cfe-commits]

MaskRay created this revision.
MaskRay added reviewers: dblaikie, davidxl, wmi.
MaskRay requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

There is currently a driver test but no test for its effect on linkageName & pass pipeline.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D94381

Files:
  clang/test/CodeGenCXX/fdebug-info-for-profiling.cpp


Index: clang/test/CodeGenCXX/fdebug-info-for-profiling.cpp
===================================================================
--- /dev/null
+++ clang/test/CodeGenCXX/fdebug-info-for-profiling.cpp
@@ -0,0 +1,21 @@
+/// Normally -g1 does not add linkageName. -fdebug-info-for-profiling adds linkageName.
+// RUN: %clang_cc1 -emit-llvm -triple %itanium_abi_triple -debug-info-kind=line-tables-only %s -o - | FileCheck %s --check-prefix=LINE
+// RUN: %clang_cc1 -emit-llvm -triple %itanium_abi_triple -debug-info-kind=line-tables-only -fdebug-info-for-profiling %s -o - | FileCheck %s
+
+// LINE: = distinct !DISubprogram(name: "foo", scope:
+
+// CHECK: = distinct !DICompileUnit({{.*}}, debugInfoForProfiling: true,
+// CHECK: = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", scope:
+
+/// Add a DWARF discriminators pass for PGO.
+// RUN: %clang_cc1 -emit-llvm -fno-legacy-pass-manager -fdebug-pass-manager -O1 -fprofile-instrument-path=a.profdata %s -o - 2>&1 | FileCheck %s --check-prefix=NODISCR
+// RUN: %clang_cc1 -emit-llvm -fno-legacy-pass-manager -fdebug-pass-manager -O1 -fprofile-instrument-path=a.profdata -fdebug-info-for-profiling %s -o - 2>&1 | FileCheck %s --check-prefix=DISCR
+
+// RUN: echo > %t.proftext
+// RUN: llvm-profdata merge %t.proftext -o %t.profdata
+// RUN: %clang_cc1 -emit-llvm -fno-legacy-pass-manager -fdebug-pass-manager -O1 -fprofile-instrument-use-path=%t.profdata -fdebug-info-for-profiling %s -o - 2>&1 | FileCheck %s --check-prefix=DISCR
+
+// NODISCR-NOT: Running pass: AddDiscriminatorsPass
+// DISCR:       Running pass: AddDiscriminatorsPass on {{.*}}
+
+void foo() {}


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