[asan] Enable the rest of use-after-scope tests

[vitalybuka]

Summary

Test where broken because of missing lifetime markers for temps and
because of aggressive optimization which removed markers in some cases.

PR27453

[eugenis]

LGTM

compiler-rt/trunk/test/asan/TestCases/use-after-scope-loop-bug.cc

 // RUN: %clangxx_asan -O1 -fsanitize-address-use-after-scope %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
-//
-// FIXME: @llvm.lifetime.* are not emitted for x.
-// XFAIL: *
 
 int *p;
 
 int main() {
   // Variable goes in and out of scope.
   for (int i = 0; i < 3; ++i) {
     int x[3] = {i, i, i};
     p = x + i;
   }
   return *p;  // BOOM
+  // CHECK: ERROR: AddressSanitizer: stack-use-after-scope
+  // CHECK:  #0 0x{{.*}} in main {{.*}}use-after-scope-loop-bug.cc:[[@LINE-2]]
+  // CHECK: Address 0x{{.*}} is located in stack of thread T{{.*}} at offset [[OFFSET:[^ ]+]] in frame
+  // {{\[}}[[OFFSET]], {{[0-9]+}}) 'x'
 }

compiler-rt/trunk/test/asan/TestCases/use-after-scope-loop-removed.cc

 // RUN: %clangxx_asan -O1 -fsanitize-address-use-after-scope %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
-//
-// FIXME: Compiler removes for-loop but keeps x variable. For unknown reason
-// @llvm.lifetime.* are not emitted for x.
-// XFAIL: *
 
 #include <stdlib.h>
 
 int *p;
 
 int main() {
   for (int i = 0; i < 3; i++) {
     int x;
     p = &x;
   }
-  return **p;  // BOOM
+  return *p;  // BOOM
   // CHECK: ERROR: AddressSanitizer: stack-use-after-scope
+  // CHECK:  #0 0x{{.*}} in main {{.*}}use-after-scope-loop-removed.cc:[[@LINE-2]]
+  // CHECK: Address 0x{{.*}} is located in stack of thread T{{.*}} at offset [[OFFSET:[^ ]+]] in frame
+  // {{\[}}[[OFFSET]], {{[0-9]+}}) 'x'
 }

compiler-rt/trunk/test/asan/TestCases/use-after-scope-temp.cc

-// RUN: %clangxx_asan -O1 -fsanitize-address-use-after-scope %s -o %t && \
+// RUN: %clangxx_asan %stdcxx11 -O1 -fsanitize-address-use-after-scope %s -o %t && \
 // RUN:     not %run %t 2>&1 | FileCheck %s
-//
-// Lifetime for temporaries is not emitted yet.
-// XFAIL: *
+
 
 struct IntHolder {
   int val;
 };
 
 const IntHolder *saved;
 
 void save(const IntHolder &holder) {
   saved = &holder;
 }
 
 int main(int argc, char *argv[]) {
-  save({10});
+  save({argc});
   int x = saved->val;  // BOOM
   // CHECK: ERROR: AddressSanitizer: stack-use-after-scope
   // CHECK:  #0 0x{{.*}} in main {{.*}}use-after-scope-temp.cc:[[@LINE-2]]
   return x;
 }