[profile] Enable testing Continuous mode on Linux (#121238)

Based on #115987, with the introduction of `REQUIRES: continuous-mode`.
Also Linux assumes `runtime_reloc`.

FIXME: image-with-no-counters.c is still excluded.

Author: chapuni

compiler-rt/test/profile/ContinuousSyncMode/basic.c

@@ -1,4 +1,4 @@
-// REQUIRES: target={{.*(darwin|aix).*}}
+// REQUIRES: continuous-mode
 
 // RUN: %clang_profgen_cont -fcoverage-mapping -o %t.exe %s
 // RUN: echo "garbage" > %t.profraw

compiler-rt/test/profile/ContinuousSyncMode/get-filename.c

@@ -1,4 +1,4 @@
-// REQUIRES: target={{.*(darwin|aix).*}}
+// REQUIRES: continuous-mode
 
 // RUN: %clang_pgogen_cont -o %t.exe %s
 // RUN: env LLVM_PROFILE_FILE="%c%t.profraw" %run %t.exe %t.profraw

compiler-rt/test/profile/ContinuousSyncMode/image-with-mcdc.c

@@ -1,4 +1,4 @@
-// REQUIRES: target={{.*(darwin|aix).*}}
+// REQUIRES: continuous-mode
 
 // RUN: %clang_profgen_cont -fcoverage-mapping -fcoverage-mcdc -O3 -o %t.exe %s
 // RUN: env LLVM_PROFILE_FILE="%c%t.profraw" %run %t.exe 3 3

compiler-rt/test/profile/ContinuousSyncMode/multi-threaded.cpp

@@ -1,4 +1,4 @@
-// REQUIRES: target={{.*(darwin|aix).*}}
+// REQUIRES: continuous-mode
 
 // RUN: rm -f %t.profraw
 // RUN: %clangxx_pgogen_cont -lpthread %s -o %t.exe -mllvm -disable-vp -fprofile-update=atomic

compiler-rt/test/profile/ContinuousSyncMode/online-merging.c

@@ -1,4 +1,4 @@
-// REQUIRES: target={{.*(darwin|aix).*}}
+// REQUIRES: continuous-mode
 
 // Test the online merging mode (%m) along with continuous mode (%c).
 //

compiler-rt/test/profile/ContinuousSyncMode/pid-substitution.c

@@ -1,4 +1,4 @@
-// REQUIRES: target={{.*(darwin|aix).*}}
+// REQUIRES: continuous-mode
 
 // RUN: rm -rf %t.dir && mkdir -p %t.dir
 // RUN: %clang_pgogen_cont -o %t.exe %s

compiler-rt/test/profile/ContinuousSyncMode/set-filename.c

@@ -1,4 +1,4 @@
-// REQUIRES: target={{.*(darwin|aix).*}}
+// REQUIRES: continuous-mode
 
 // RUN: %clang_pgogen_cont -o %t.exe %s
 // RUN: env LLVM_PROFILE_FILE="%c%t.profraw" %run %t.exe %t.profraw %t.bad

compiler-rt/test/profile/lit.cfg.py

@@ -31,7 +31,7 @@ def get_required_attr(config, attr_name):
 target_is_msvc = bool(re.match(r".*-windows-msvc$", config.target_triple))
 
 # Whether continous profile collection (%c) requires runtime counter relocation on this platform
-runtime_reloc = bool(config.host_os in ["AIX"])
+runtime_reloc = bool(config.host_os in ["AIX", "Linux"])
 
 if config.host_os in ["Linux"]:
     extra_link_flags = ["-ldl"]
@@ -210,3 +210,6 @@ def exclude_unsupported_files_for_aix(dirname):
 
 if config.have_curl:
     config.available_features.add("curl")
+
+if config.host_os in ("AIX", "Darwin", "Linux"):
+    config.available_features.add("continuous-mode")