[Dexter] Replace clang with clang++ in various cross project tests (#65987)

This patch replaces invocations of clang with clang++ for a set of
c++ files in the dexter cross-project tests. As a small additional change,
this patch removes -lstdc++ from a test that did not appear to require it.

Author: SLTozer

cross-project-tests/debuginfo-tests/dexter-tests/aggregate-indirect-arg.cpp

@@ -1,7 +1,7 @@
 // REQUIRES: lldb
 // UNSUPPORTED: system-windows
 //
-// RUN: %clang -std=gnu++11 -O0 -g -lstdc++ %s -o %t
+// RUN: %clang++ -std=gnu++11 -O0 -g %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -- %s
 // Radar 8945514

cross-project-tests/debuginfo-tests/dexter-tests/asan-deque.cpp

@@ -8,7 +8,7 @@
 // lldb-8, even outside of dexter, will sometimes trigger an asan fault in
 // the debugged process and generally freak out.
 
-// RUN: %clang -std=gnu++11 -O1 -glldb -fsanitize=address -arch x86_64 %s -o %t
+// RUN: %clang++ -std=gnu++11 -O1 -glldb -fsanitize=address -arch x86_64 %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -- %s
 #include <deque>

cross-project-tests/debuginfo-tests/dexter-tests/ctor.cpp

@@ -1,7 +1,7 @@
 // REQUIRES: lldb
 // UNSUPPORTED: system-windows
 //
-// RUN: %clang -std=gnu++11 -O0 -glldb %s -o %t
+// RUN: %clang++ -std=gnu++11 -O0 -glldb %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -- %s
 

cross-project-tests/debuginfo-tests/dexter-tests/deferred_globals.cpp

@@ -4,7 +4,7 @@
 
 // REQUIRES: lldb
 // UNSUPPORTED: system-windows
-// RUN: %clang -std=gnu++11 -O0 -g %s -o %t
+// RUN: %clang++ -std=gnu++11 -O0 -g %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary  %t --debugger 'lldb' -v -- %s
 

cross-project-tests/debuginfo-tests/dexter-tests/namespace.cpp

@@ -5,7 +5,7 @@
 // REQUIRES: lldb
 // UNSUPPORTED: system-windows
 
-// RUN: %clang -g -O0 %s -o %t
+// RUN: %clang++ -g -O0 %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -v -- %s
 

cross-project-tests/debuginfo-tests/dexter-tests/nrvo-string.cpp

@@ -7,11 +7,11 @@
 //           Zorg configures the ASAN stage2 bots to not build the asan
 //           compiler-rt. Only run this test on non-asanified configurations.
 //
-// RUN: %clang -std=gnu++11 -O0 -glldb -fno-exceptions %s -o %t
+// RUN: %clang++ -std=gnu++11 -O0 -glldb -fno-exceptions %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -- %s
 //
-// RUN: %clang -std=gnu++11 -O1 -glldb -fno-exceptions %s -o %t
+// RUN: %clang++ -std=gnu++11 -O1 -glldb -fno-exceptions %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -- %s
 //

cross-project-tests/debuginfo-tests/dexter-tests/optnone-fastmath.cpp

@@ -1,7 +1,7 @@
-// RUN: %clang -std=gnu++11 -O2 -ffast-math -g %s -o %t
+// RUN: %clang++ -std=gnu++11 -O2 -ffast-math -g %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -- %s
-// RUN: %clang -std=gnu++11 -O0 -ffast-math -g %s -o %t
+// RUN: %clang++ -std=gnu++11 -O0 -ffast-math -g %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -- %s
 

cross-project-tests/debuginfo-tests/dexter-tests/optnone-loops.cpp

@@ -5,7 +5,7 @@
 // UNSUPPORTED: system-windows
 // UNSUPPORTED: system-darwin
 
-// RUN: %clang -std=gnu++11 -O2 -g %s -o %t
+// RUN: %clang++ -std=gnu++11 -O2 -g %s -o %t
 // RUN: %dexter --fail-lt 1.0 -w \
 // RUN:     --binary %t --debugger 'lldb' -- %s
 

cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/penalty/dex_declare_file.cpp

@@ -5,7 +5,7 @@
 // UNSUPPORTED: system-darwin
 //
 //
-// RUN: %dexter_regression_test_build %s -o %t
+// RUN: %dexter_regression_test_cxx_build %s -o %t
 // RUN: not %dexter_regression_test_run --binary %t -- %s | FileCheck %s
 // CHECK: dex_declare_file.cpp
 

cross-project-tests/debuginfo-tests/dexter/feature_tests/commands/penalty/expect_program_state.cpp

@@ -4,7 +4,7 @@
 //
 // UNSUPPORTED: system-darwin
 //
-// RUN: %dexter_regression_test_build %s -o %t
+// RUN: %dexter_regression_test_cxx_build %s -o %t
 // RUN: not %dexter_regression_test_run --binary %t -- %s | FileCheck %s
 // CHECK: expect_program_state.cpp: