[Sanitizer] Disable inlining to improve robustness of test

This test checks that Sanitizer reports contain properly symbolicated
stacks.  Let's make sure that all of the expected frames appear in the
stack by disabling inlining and preventing tail call optimization.

rdar://68171463

Author: Julian Lettner

test/Sanitizers/symbolication-linux.swift

@@ -11,23 +11,25 @@
 // symbolication.  Note that `llvm-symbolizer` does not demangle Swift symbol
 // names, so we use `swift demangle`.
 
+@inline(never)
 func foo() {
   let x = UnsafeMutablePointer<Int>.allocate(capacity: 1)
   x.deallocate()
   print(x.pointee)
 }
 
+@inline(never)
 func bar() {
   foo()
+  print("Prevent tail call optimization")
 }
 
 bar()
 
-
 // Out-of-process
-// OOP:      #0 0x{{[0-9a-f]+}} in main.foo() -> () {{.*}}symbolication-linux.swift:[[@LINE-11]]
+// OOP:      #0 0x{{[0-9a-f]+}} in main.foo() -> () {{.*}}symbolication-linux.swift:[[@LINE-12]]
 // OOP-NEXT: #1 0x{{[0-9a-f]+}} in main.bar() -> () {{.*}}symbolication-linux.swift:[[@LINE-8]]
-// OOP-NEXT: #2 0x{{[0-9a-f]+}} in main {{.*}}symbolication-linux.swift:[[@LINE-6]]
+// OOP-NEXT: #2 0x{{[0-9a-f]+}} in main {{.*}}symbolication-linux.swift:[[@LINE-5]]
 
 // In-process
 // IP:      #0 0x{{[0-9a-f]+}} in main.foo() -> ()+0x

test/Sanitizers/symbolication.swift

@@ -9,23 +9,25 @@
 // both out-of-process (via `atos`) and when falling back to in-process
 // symbolication.  Note that `atos` also demangles Swift symbol names.
 
+@inline(never)
 func foo() {
   let x = UnsafeMutablePointer<Int>.allocate(capacity: 1)
   x.deallocate()
   print(x.pointee)
 }
 
+@inline(never)
 func bar() {
   foo()
+  print("Prevent tail call optimization")
 }
 
 bar()
 
-
 // Out-of-process
-// OOP:      #0 0x{{[0-9a-f]+}} in foo() symbolication.swift:[[@LINE-11]]
+// OOP:      #0 0x{{[0-9a-f]+}} in foo() symbolication.swift:[[@LINE-12]]
 // OOP-NEXT: #1 0x{{[0-9a-f]+}} in bar() symbolication.swift:[[@LINE-8]]
-// OOP-NEXT: #2 0x{{[0-9a-f]+}} in main symbolication.swift:[[@LINE-6]]
+// OOP-NEXT: #2 0x{{[0-9a-f]+}} in main symbolication.swift:[[@LINE-5]]
 
 // In-process
 // IP:      #0 0x{{[0-9a-f]+}} in main.foo() -> ()+0x