[BOLT] Fix tailcall-traps and basic-instr tests on ubuntu

Summary: These tests are failing on opensource ubuntu.

(cherry picked from FBD32514489)

bolt/test/X86/Inputs/tailcall_traps.s

@@ -15,3 +15,4 @@ bar:
 
 .globl moo
 moo:
+  nop

bolt/test/X86/tailcall-traps.test

@@ -1,6 +1,6 @@
 # Tests the peephole that adds trap instructions following indirect tail calls.
 
-RUN: %clang %p/Inputs/tailcall_traps.s -o %t.exe
+RUN: %clang %cflags %p/Inputs/tailcall_traps.s -o %t.exe
 RUN: llvm-bolt %t.exe -o %t -peepholes=tailcall-traps \
 RUN:   -print-peepholes -funcs=foo,bar 2>&1 | FileCheck %s
 

bolt/test/runtime/X86/Inputs/basic-instrumentation.s

@@ -0,0 +1,9 @@
+  .globl main
+  .type main, %function
+main:
+	pushq	%rbp
+	movq	%rsp, %rbp
+	movl	$0x0, %eax
+	popq	%rbp
+	retq
+.size main, .-main

bolt/test/runtime/X86/basic-instrumentation.test

@@ -1,8 +1,8 @@
-# Try to instrument a very fast test. varargs will not execute any code during
+# Try to instrument a very fast test. Input bin will not execute any code during
 # runtime besides returning zero in main, so it is a good trivial case.
 REQUIRES: system-linux
 
-RUN: %clang %p/../../Inputs/vararg.s -Wl,-q -o %t.exe
+RUN: %clang %p/Inputs/basic-instrumentation.s -Wl,-q -o %t.exe
 RUN: llvm-bolt %t.exe -o %t -instrument \
 RUN:   -instrumentation-file=%t \
 RUN:   -instrumentation-file-append-pid