[compiler-rt] r261261 - Add test coverage for default linker

[Xinliang David Li via llvm-commits]

Author: davidxl
Date: Thu Feb 18 15:11:37 2016
New Revision: 261261

URL: http://llvm.org/viewvc/llvm-project?rev=261261&view=rev
Log:
Add test coverage for default linker

Modified:
    compiler-rt/trunk/test/profile/Linux/coverage_test.cpp

Modified: compiler-rt/trunk/test/profile/Linux/coverage_test.cpp
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Linux/coverage_test.cpp?rev=261261&r1=261260&r2=261261&view=diff
==============================================================================
--- compiler-rt/trunk/test/profile/Linux/coverage_test.cpp (original)
+++ compiler-rt/trunk/test/profile/Linux/coverage_test.cpp Thu Feb 18 15:11:37 2016
@@ -2,7 +2,16 @@
 // RUN: env LLVM_PROFILE_FILE=%t.profraw %run %t
 // RUN: llvm-profdata merge -o %t.profdata %t.profraw
 // RUN: llvm-cov show %t -instr-profile %t.profdata -filename-equivalence 2>&1 | FileCheck %s
-//
+// BFD linker older than 2.26 has a bug that per-func profile data will be wrongly garbage collected when GC is turned on. We only do end-to-end test here without GC:
+// RUN: %clang_profgen -O2  -fprofile-instr-generate -fcoverage-mapping  -o %t.2 %s
+// RUN: env LLVM_PROFILE_FILE=%t.2.profraw %run %t.2
+// RUN: llvm-profdata merge -o %t.2.profdata %t.2.profraw
+// RUN: llvm-cov show %t.2 -instr-profile %t.2.profdata -filename-equivalence 2>&1 | FileCheck %s
+// Check covmap is not garbage collected when GC is turned on with BFD linker. Due to the bug mentioned above, we can only
+// do the check with objdump:
+// RUN: %clang_profgen -O2  -fprofile-instr-generate -fcoverage-mapping -Wl,--gc-sections -o %t.3 %s
+// RUN: llvm-objdump -h %t.3 | FileCheck --check-prefix COVMAP %s
+// Check PIE option
 // RUN: %clang_profgen -fuse-ld=gold -O2 -fdata-sections -ffunction-sections -fPIE -pie -fprofile-instr-generate -fcoverage-mapping -Wl,--gc-sections -o %t.pie %s
 // RUN: env LLVM_PROFILE_FILE=%t.pie.profraw %run %t.pie
 // RUN: llvm-profdata merge -o %t.pie.profdata %t.pie.profraw
@@ -22,7 +31,5 @@ int main() {          // CHECK:  1| [[@L
   return 0;           // CHECK:  1| [[@LINE]]|  return
 }                     // CHECK:  1| [[@LINE]]|}
 
-
-
-
+// COVMAP: __llvm_covmap {{.*}}