[BOLT][TEST] Imported small tests, removed duplicate input

Summary:
Imported small internal tests.
- call_zero.s
- cfi_expr_rewrite.s
- cfi_insts_count.s
- exceptions_pic.test
- exceptions_run.test

Removed duplicate input file (switch_statement.cpp)

(cherry picked from FBD31355466)

bolt/test/X86/bad_exe.test

@@ -1,6 +1,6 @@
 # Check that llvm-bolt rejects input that is not a valid ELF executable
 # bzip2.debuginfo is the result of running "objcopy --only-keep-debug".
-RUN: %clang %S/Inputs/switch_statement.cpp -g -o %t
+RUN: %clang %S/Inputs/icf-jump-tables.c -g -o %t
 RUN: llvm-objcopy --only-keep-debug %t %t.debuginfo
 RUN: not llvm-bolt %t.debuginfo -o /dev/null |& FileCheck %s
 

bolt/test/X86/bolt_info.test

@@ -1,5 +1,5 @@
 # Check that the .bolt_info section is generated properly.
-RUN: %clang %S/Inputs/switch_statement.cpp -o %t
+RUN: %clang %S/Inputs/icf-jump-tables.c -o %t
 RUN: llvm-bolt %t -o %t.bolt && \
 RUN: llvm-objdump -s -j .note.bolt_info %t.bolt | grep -v "file format" | \
 RUN:   cut -c 44- | tr -d '\n' | FileCheck %s

bolt/test/X86/call_zero.s

@@ -0,0 +1,38 @@
+# Verifies that llvm-bolt ignores function calls to 0.
+
+# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o
+# RUN: %clang %cflags %t.o -o %t.exe
+# RUN: llvm-bolt %t.exe -o /dev/null -v=2 2>&1 | FileCheck %s
+# CHECK: Function main has a call to address zero.
+
+        .text
+  .globl main
+  .type main, %function
+main:
+# FDATA: 0 [unknown] 0 1 main 0 0 0
+        .cfi_startproc
+.LBB00:
+        pushq   %rbp
+        .cfi_def_cfa_offset 16
+        .cfi_offset %rbp, -16
+        movq    %rsp, %rbp
+        .cfi_def_cfa_register %rbp
+        movl    $0x0, %eax
+        testq   %rax, %rax
+.LBB00_br:      je      .Ltmp0
+# FDATA: 1 main #.LBB00_br# 1 main #.Ltmp0# 0 0
+# FDATA: 1 main #.LBB00_br# 1 main #.LFT0# 0 0
+
+.LFT0:
+        movl    $0x0, %eax
+.LFT0_br:       callq   0
+# FDATA: 1 main #.LFT0_br# 1 main #.Ltmp0# 0 0
+
+.Ltmp0:
+        movl    $0x0, %eax
+        popq    %rbp
+        .cfi_def_cfa %rsp, 8
+        retq
+
+        .cfi_endproc
+.size main, .-main