[clang] 74a42ae - [test] Add Clang side tests for -fdebug-info-for-profiling

[Fangrui Song via cfe-commits]

Author: Fangrui Song
Date: 2021-01-13T14:27:39-08:00
New Revision: 74a42aedfe14938e01d128456c76cede2ccbc26c

URL: https://github.com/llvm/llvm-project/commit/74a42aedfe14938e01d128456c76cede2ccbc26c
DIFF: https://github.com/llvm/llvm-project/commit/74a42aedfe14938e01d128456c76cede2ccbc26c.diff

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

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

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D94381

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

Modified: 
    

Removed: 
    


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diff  --git a/clang/test/CodeGenCXX/fdebug-info-for-profiling.cpp b/clang/test/CodeGenCXX/fdebug-info-for-profiling.cpp
new file mode 100644
index 000000000000..0a66818b23be
--- /dev/null
+++ b/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() {}