diff --git a/SingleSource/UnitTests/testcase-CGExprConstant-IR.ll b/SingleSource/UnitTests/testcase-CGExprConstant-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CGExprConstant-IR.ll
@@ -0,0 +1,57 @@
+; ModuleID = 'testcase-CGExprConstant.c'
+source_filename = "testcase-CGExprConstant.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+%struct.S1 = type { i32, i32 }
+%struct.S2 = type { %struct.S1, %struct.S1*, [2 x i32] }
+
+@gs1 = dso_local global %struct.S1 { i32 1, i32 2 }, align 4
+@.compoundliteral = internal global %struct.S2 { %struct.S1 { i32 1, i32 2 }, %struct.S1* @gs1, [2 x i32] [i32 1, i32 2] }, align 8
+@s = dso_local local_unnamed_addr global %struct.S2* @.compoundliteral, align 8
+@.str = private unnamed_addr constant [3 x i8] c"%d\00", align 1
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = load %struct.S2*, %struct.S2** @s, align 8, !tbaa !3
+  %2 = getelementptr inbounds %struct.S2, %struct.S2* %1, i64 0, i32 0, i32 1
+  %3 = load i32, i32* %2, align 4, !tbaa !7
+  %4 = icmp eq i32 %3, 2
+  br i1 %4, label %5, label %11
+
+5:                                                ; preds = %0
+  %6 = getelementptr inbounds %struct.S2, %struct.S2* %1, i64 0, i32 2, i64 1
+  %7 = load i32, i32* %6, align 4, !tbaa !11
+  %8 = icmp eq i32 %7, 2
+  br i1 %8, label %9, label %11
+
+9:                                                ; preds = %5
+  %10 = tail call i32 (i8*, ...) @printf(i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 2)
+  br label %11
+
+11:                                               ; preds = %5, %0, %9
+  %12 = phi i32 [ 0, %9 ], [ 2, %0 ], [ 6, %5 ]
+  ret i32 %12
+}
+
+; Function Attrs: nofree nounwind
+declare dso_local noundef i32 @printf(i8* nocapture noundef readonly, ...) local_unnamed_addr #1
+
+attributes #0 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nofree nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+
+!llvm.module.flags = !{!0, !1}
+!llvm.ident = !{!2}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"uwtable", i32 1}
+!2 = !{!"Ubuntu clang version 13.0.0-++20210711063810+98c2e4115d8d-1~exp1~20210711164601.2534"}
+!3 = !{!4, !4, i64 0}
+!4 = !{!"any pointer", !5, i64 0}
+!5 = !{!"omnipotent char", !6, i64 0}
+!6 = !{!"Simple C/C++ TBAA"}
+!7 = !{!8, !10, i64 4}
+!8 = !{!"S2", !9, i64 0, !4, i64 8, !5, i64 16}
+!9 = !{!"S1", !10, i64 0, !10, i64 4}
+!10 = !{!"int", !5, i64 0}
+!11 = !{!10, !10, i64 0}
diff --git a/SingleSource/UnitTests/testcase-CGExprConstant-IR.reference_output b/SingleSource/UnitTests/testcase-CGExprConstant-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CGExprConstant-IR.reference_output
@@ -0,0 +1 @@
+2exit 0
diff --git a/SingleSource/UnitTests/testcase-CodeGen-1-IR.ll b/SingleSource/UnitTests/testcase-CodeGen-1-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-1-IR.ll
@@ -0,0 +1,53 @@
+; ModuleID = 'testcase-CodeGen-1.c'
+source_filename = "testcase-CodeGen-1.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@a = dso_local local_unnamed_addr global i128 0, align 16
+
+; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn uwtable
+define dso_local void @b() local_unnamed_addr #0 {
+  %1 = load i128, ptr @a, align 16, !tbaa !5
+  %2 = uitofp i128 %1 to double
+  %3 = fptoui double %2 to i128
+  store i128 %3, ptr @a, align 16, !tbaa !5
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #1 {
+  %1 = load i128, ptr @a, align 16, !tbaa !5
+  %2 = uitofp i128 %1 to double
+  %3 = fptoui double %2 to i128
+  store i128 %3, ptr @a, align 16, !tbaa !5
+  %4 = icmp eq i128 %3, 0
+  br i1 %4, label %6, label %5
+
+5:                                                ; preds = %0
+  tail call void @abort() #3
+  unreachable
+
+6:                                                ; preds = %0
+  ret i32 0
+}
+
+; Function Attrs: noreturn
+declare void @abort() local_unnamed_addr #2
+
+attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #2 = { noreturn "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #3 = { noreturn nounwind }
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+!llvm.ident = !{!4}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{!"Ubuntu clang version 15.0.0-++20220502063808+e547a333a433-1~exp1~20220502183820.463"}
+!5 = !{!6, !6, i64 0}
+!6 = !{!"__int128", !7, i64 0}
+!7 = !{!"omnipotent char", !8, i64 0}
+!8 = !{!"Simple C/C++ TBAA"}
diff --git a/SingleSource/UnitTests/testcase-CodeGen-1-IR.reference_output b/SingleSource/UnitTests/testcase-CodeGen-1-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-1-IR.reference_output
@@ -0,0 +1 @@
+exit 0
diff --git a/SingleSource/UnitTests/testcase-CodeGen-1.c b/SingleSource/UnitTests/testcase-CodeGen-1.c
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-1.c
@@ -0,0 +1,15 @@
+// COVERAGE: llvm-project/llvm/lib/Analysis/InlineCost.cpp (1 new functions)
+// COVERAGE: llvm-project/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp (2 new functions)
+// COVERAGE: llvm-project/llvm/lib/CodeGen/TargetLoweringBase.cpp (2 new functions)
+extern void abort();
+#ifndef __SIZEOF_INT128__
+#define __int128 long long // Appears in test case of pr61375.c
+#endif
+unsigned __int128 a;
+void b() { a = (double)a + 0; }
+int main() {
+  b();
+  if (a)
+    abort();
+  return 0;
+}
diff --git a/SingleSource/UnitTests/testcase-CodeGen-1.reference_output b/SingleSource/UnitTests/testcase-CodeGen-1.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-1.reference_output
@@ -0,0 +1 @@
+exit 0
diff --git a/SingleSource/UnitTests/testcase-CodeGen-2-IR.ll b/SingleSource/UnitTests/testcase-CodeGen-2-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-2-IR.ll
@@ -0,0 +1,46 @@
+; ModuleID = 'testcase-CodeGen-2.c'
+source_filename = "testcase-CodeGen-2.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@a = dso_local local_unnamed_addr global float 0.000000e+00, align 4
+
+; Function Attrs: nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = load float, ptr @a, align 4, !tbaa !5
+  %2 = fptosi float %1 to i128
+  %3 = sitofp i128 %2 to double
+  %4 = fadd double %3, 1.000000e+01
+  %5 = fcmp une double %4, 0.000000e+00
+  %6 = zext i1 %5 to i128
+  %7 = add nsw i128 %6, %2
+  %8 = icmp eq i128 %7, 1
+  br i1 %8, label %10, label %9
+
+9:                                                ; preds = %0
+  tail call void @abort() #2
+  unreachable
+
+10:                                               ; preds = %0
+  ret i32 0
+}
+
+; Function Attrs: noreturn
+declare void @abort() local_unnamed_addr #1
+
+attributes #0 = { nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { noreturn "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #2 = { noreturn nounwind }
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+!llvm.ident = !{!4}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{!"Ubuntu clang version 15.0.0-++20220502063808+e547a333a433-1~exp1~20220502183820.463"}
+!5 = !{!6, !6, i64 0}
+!6 = !{!"float", !7, i64 0}
+!7 = !{!"omnipotent char", !8, i64 0}
+!8 = !{!"Simple C/C++ TBAA"}
diff --git a/SingleSource/UnitTests/testcase-CodeGen-2-IR.reference_output b/SingleSource/UnitTests/testcase-CodeGen-2-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-2-IR.reference_output
@@ -0,0 +1 @@
+exit 0
diff --git a/SingleSource/UnitTests/testcase-CodeGen-2.c b/SingleSource/UnitTests/testcase-CodeGen-2.c
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-2.c
@@ -0,0 +1,15 @@
+// COVERAGE: llvm-project/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp (1 new functions)
+// COVERAGE: llvm-project/llvm/lib/CodeGen/TargetLoweringBase.cpp (1 new functions)
+extern void abort();
+#ifndef __SIZEOF_INT128__
+#define __int128 long long // Appears in test case of pr61375.c
+#endif
+float a;
+int main() {
+  __int128 b = a;
+  if (b + (double)10)
+    ++b;
+  while (b != 1)
+    abort();
+  return 0;
+}
diff --git a/SingleSource/UnitTests/testcase-CodeGen-2.reference_output b/SingleSource/UnitTests/testcase-CodeGen-2.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-2.reference_output
@@ -0,0 +1 @@
+exit 0
diff --git a/SingleSource/UnitTests/testcase-CodeGen-3-IR.ll b/SingleSource/UnitTests/testcase-CodeGen-3-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-3-IR.ll
@@ -0,0 +1,52 @@
+; ModuleID = 'testcase-CodeGen-3.c'
+source_filename = "testcase-CodeGen-3.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@f = dso_local local_unnamed_addr global float 0.000000e+00, align 4
+@.str = private unnamed_addr constant [5 x i8] c"%lld\00", align 1
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = load float, ptr @f, align 4, !tbaa !5
+  %2 = fptosi float %1 to i128
+  %3 = sitofp i128 %2 to double
+  %4 = fadd double %3, 1.000000e+01
+  %5 = fptosi double %4 to i64
+  %6 = sub nsw i64 10, %5
+  %7 = sext i64 %6 to i128
+  %8 = icmp sgt i128 %2, %7
+  br i1 %8, label %15, label %9
+
+9:                                                ; preds = %0, %9
+  %10 = phi i128 [ %11, %9 ], [ %2, %0 ]
+  %11 = add nsw i128 %10, 1
+  %12 = trunc i128 %11 to i64
+  %13 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull @.str, i64 noundef %12)
+  %14 = icmp eq i128 %11, 11
+  br i1 %14, label %15, label %9, !llvm.loop !9
+
+15:                                               ; preds = %9, %0
+  ret i32 0
+}
+
+; Function Attrs: nofree nounwind
+declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1
+
+attributes #0 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nofree nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+!llvm.ident = !{!4}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{!"Ubuntu clang version 15.0.0-++20220502063808+e547a333a433-1~exp1~20220502183820.463"}
+!5 = !{!6, !6, i64 0}
+!6 = !{!"float", !7, i64 0}
+!7 = !{!"omnipotent char", !8, i64 0}
+!8 = !{!"Simple C/C++ TBAA"}
+!9 = distinct !{!9, !10}
+!10 = !{!"llvm.loop.mustprogress"}
diff --git a/SingleSource/UnitTests/testcase-CodeGen-3-IR.reference_output b/SingleSource/UnitTests/testcase-CodeGen-3-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-3-IR.reference_output
@@ -0,0 +1 @@
+1234567891011exit 0
diff --git a/SingleSource/UnitTests/testcase-CodeGen-3.c b/SingleSource/UnitTests/testcase-CodeGen-3.c
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-3.c
@@ -0,0 +1,23 @@
+// COVERAGE: llvm-project/clang/lib/AST/ExprConstant.cpp (1 new functions)
+// COVERAGE: llvm-project/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp (1 new functions)
+// COVERAGE: llvm-project/llvm/lib/CodeGen/TargetLoweringBase.cpp (1 new functions)
+#include "stdio.h"
+#ifdef __SIZEOF_INT128__
+typedef __int128 L;  // Appears in pr49218.c test case
+#else
+typedef long long L;
+#endif
+float f;
+int main() {
+  L i = f;
+  if (i <= 10 +
+                41 * +((long)(((int)10) >> ((int)10))) *
+                    ((long)(((int)(i)) % ((int)10))) -
+                ((long)(((double)(i)) + ((double)10))) -
+                ((long)(((int)10) ^ ((int)10))))
+    do {
+      ++i;
+      printf("%lld", (long long) i);
+    } while (i != 11);
+  return 0;
+}
diff --git a/SingleSource/UnitTests/testcase-CodeGen-3.reference_output b/SingleSource/UnitTests/testcase-CodeGen-3.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-CodeGen-3.reference_output
@@ -0,0 +1 @@
+1234567891011exit 0
diff --git a/SingleSource/UnitTests/testcase-Expr-1-IR.ll b/SingleSource/UnitTests/testcase-Expr-1-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-Expr-1-IR.ll
@@ -0,0 +1,37 @@
+; ModuleID = 'testcase-Expr-1.c'
+source_filename = "testcase-Expr-1.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@arr = dso_local local_unnamed_addr global [3 x i32] [i32 0, i32 1, i32 2], align 4
+@.str = private unnamed_addr constant [3 x i8] c"%d\00", align 1
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @arr, i64 0, i64 1), align 4, !tbaa !3
+  %2 = tail call i32 (i8*, ...) @printf(i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 %1)
+  %3 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @arr, i64 0, i64 1), align 4, !tbaa !3
+  %4 = icmp eq i32 %3, -5
+  %5 = load i32, i32* getelementptr inbounds ([3 x i32], [3 x i32]* @arr, i64 0, i64 2), align 4
+  %6 = icmp eq i32 %5, 2
+  %7 = select i1 %6, i32 0, i32 3
+  %8 = select i1 %4, i32 %7, i32 2
+  ret i32 %8
+}
+
+; Function Attrs: nofree nounwind
+declare dso_local noundef i32 @printf(i8* nocapture noundef readonly, ...) local_unnamed_addr #1
+
+attributes #0 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nofree nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+
+!llvm.module.flags = !{!0, !1}
+!llvm.ident = !{!2}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"uwtable", i32 1}
+!2 = !{!"Ubuntu clang version 13.0.0-++20210711063810+98c2e4115d8d-1~exp1~20210711164601.2534"}
+!3 = !{!4, !4, i64 0}
+!4 = !{!"int", !5, i64 0}
+!5 = !{!"omnipotent char", !6, i64 0}
+!6 = !{!"Simple C/C++ TBAA"}
diff --git a/SingleSource/UnitTests/testcase-Expr-1-IR.reference_output b/SingleSource/UnitTests/testcase-Expr-1-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-Expr-1-IR.reference_output
@@ -0,0 +1 @@
+1exit 2
diff --git a/SingleSource/UnitTests/testcase-ExprConstant-1-IR.ll b/SingleSource/UnitTests/testcase-ExprConstant-1-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-ExprConstant-1-IR.ll
@@ -0,0 +1,25 @@
+; ModuleID = 'testcase-ExprConstant-1.c'
+source_filename = "testcase-ExprConstant-1.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@.str = private unnamed_addr constant [3 x i8] c"%d\00", align 1
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = tail call i32 (i8*, ...) @printf(i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 5)
+  ret i32 1
+}
+
+; Function Attrs: nofree nounwind
+declare dso_local noundef i32 @printf(i8* nocapture noundef readonly, ...) local_unnamed_addr #1
+
+attributes #0 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nofree nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+
+!llvm.module.flags = !{!0, !1}
+!llvm.ident = !{!2}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"uwtable", i32 1}
+!2 = !{!"Ubuntu clang version 13.0.0-++20210711063810+98c2e4115d8d-1~exp1~20210711164601.2534"}
diff --git a/SingleSource/UnitTests/testcase-ExprConstant-1-IR.reference_output b/SingleSource/UnitTests/testcase-ExprConstant-1-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-ExprConstant-1-IR.reference_output
@@ -0,0 +1 @@
+5exit 1
diff --git a/SingleSource/UnitTests/testcase-ExprConstant-2-IR.ll b/SingleSource/UnitTests/testcase-ExprConstant-2-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-ExprConstant-2-IR.ll
@@ -0,0 +1,25 @@
+; ModuleID = 'testcase-ExprConstant-2.c'
+source_filename = "testcase-ExprConstant-2.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@.str.1 = private unnamed_addr constant [5 x i8] c"long\00", align 1
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = tail call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
+  ret i32 0
+}
+
+; Function Attrs: nofree nounwind
+declare noundef i32 @puts(i8* nocapture noundef readonly) local_unnamed_addr #1
+
+attributes #0 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nofree nounwind }
+
+!llvm.module.flags = !{!0, !1}
+!llvm.ident = !{!2}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"uwtable", i32 1}
+!2 = !{!"Ubuntu clang version 13.0.0-++20210711063810+98c2e4115d8d-1~exp1~20210711164601.2534"}
diff --git a/SingleSource/UnitTests/testcase-ExprConstant-2-IR.reference_output b/SingleSource/UnitTests/testcase-ExprConstant-2-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-ExprConstant-2-IR.reference_output
@@ -0,0 +1,2 @@
+long
+exit 0
diff --git a/SingleSource/UnitTests/testcase-Float2Int-IR.ll b/SingleSource/UnitTests/testcase-Float2Int-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-Float2Int-IR.ll
@@ -0,0 +1,54 @@
+; ModuleID = 'testcase-Float2Int.c'
+source_filename = "testcase-Float2Int.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@b = dso_local local_unnamed_addr global i8 32, align 1
+@.str = private unnamed_addr constant [3 x i8] c"%d\00", align 1
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = load i8, ptr @b, align 1, !tbaa !5
+  %2 = mul i8 %1, %1
+  store i8 %2, ptr @b, align 1, !tbaa !5
+  %3 = icmp sgt i8 %2, -30
+  br i1 %3, label %4, label %11
+
+4:                                                ; preds = %0, %4
+  %5 = phi i8 [ %9, %4 ], [ %2, %0 ]
+  %6 = sext i8 %5 to i32
+  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull @.str, i32 noundef %6)
+  %8 = load i8, ptr @b, align 1, !tbaa !5
+  %9 = add i8 %8, -1
+  store i8 %9, ptr @b, align 1, !tbaa !5
+  %10 = icmp sgt i8 %9, -30
+  br i1 %10, label %4, label %11, !llvm.loop !8
+
+11:                                               ; preds = %4, %0
+  %12 = tail call i32 @putchar(i32 10)
+  ret i32 0
+}
+
+; Function Attrs: nofree nounwind
+declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1
+
+; Function Attrs: nofree nounwind
+declare noundef i32 @putchar(i32 noundef) local_unnamed_addr #2
+
+attributes #0 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nofree nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #2 = { nofree nounwind }
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+!llvm.ident = !{!4}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{!"Ubuntu clang version 15.0.0-++20220502063808+e547a333a433-1~exp1~20220502183820.463"}
+!5 = !{!6, !6, i64 0}
+!6 = !{!"omnipotent char", !7, i64 0}
+!7 = !{!"Simple C/C++ TBAA"}
+!8 = distinct !{!8, !9}
+!9 = !{!"llvm.loop.mustprogress"}
diff --git a/SingleSource/UnitTests/testcase-Float2Int-IR.reference_output b/SingleSource/UnitTests/testcase-Float2Int-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-Float2Int-IR.reference_output
@@ -0,0 +1,2 @@
+0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-26-27-28-29
+exit 0
diff --git a/SingleSource/UnitTests/testcase-Float2Int.c b/SingleSource/UnitTests/testcase-Float2Int.c
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-Float2Int.c
@@ -0,0 +1,9 @@
+// COVERAGE: llvm-project/llvm/lib/Transforms/Scalar/Float2Int.cpp (1 new functions)
+#include "stdio.h"
+char b = ' ';
+int main() {
+  for (b = ((long)(((double)(b)) * ((double)(b)))); b >= -29; b--)
+    printf("%d", (int)b);
+  printf("\n");
+  return 0;
+}
diff --git a/SingleSource/UnitTests/testcase-Float2Int.reference_output b/SingleSource/UnitTests/testcase-Float2Int.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-Float2Int.reference_output
@@ -0,0 +1,2 @@
+0-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-26-27-28-29
+exit 0
diff --git a/SingleSource/UnitTests/testcase-InstCombine-1-IR.ll b/SingleSource/UnitTests/testcase-InstCombine-1-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-InstCombine-1-IR.ll
@@ -0,0 +1,96 @@
+; ModuleID = 'testcase-InstCombine-1.c'
+source_filename = "testcase-InstCombine-1.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+%struct.S = type { [9 x i8] }
+
+@f = dso_local local_unnamed_addr global i32 0, align 4
+@__const.main.m = private unnamed_addr constant { i8, i8, i8, i8, i8, i8, i8, i8, i8 } { i8 5, i8 0, i8 -40, i8 -1, i8 -1, i8 79, i8 0, i8 20, i8 0 }, align 1
+@h = dso_local local_unnamed_addr global %struct.S zeroinitializer, align 8
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = load i32, i32* @f, align 4, !tbaa !3
+  %2 = icmp eq i32 %1, 0
+  br i1 %2, label %21, label %3
+
+3:                                                ; preds = %0
+  %4 = sub i32 0, %1
+  %5 = and i32 %4, 3
+  %6 = icmp eq i32 %5, 0
+  br i1 %6, label %13, label %7
+
+7:                                                ; preds = %3, %7
+  %8 = phi i32 [ %10, %7 ], [ %1, %3 ]
+  %9 = phi i32 [ %11, %7 ], [ %5, %3 ]
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* noundef nonnull align 8 dereferenceable(9) getelementptr inbounds (%struct.S, %struct.S* @h, i64 0, i32 0, i64 0), i8* noundef nonnull align 1 dereferenceable(9) getelementptr inbounds ({ i8, i8, i8, i8, i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8, i8, i8, i8, i8 }* @__const.main.m, i64 0, i32 0), i64 9, i1 false), !tbaa.struct !7
+  %10 = add nsw i32 %8, 1
+  %11 = add i32 %9, -1
+  %12 = icmp eq i32 %11, 0
+  br i1 %12, label %13, label %7, !llvm.loop !8
+
+13:                                               ; preds = %7, %3
+  %14 = phi i32 [ %1, %3 ], [ %10, %7 ]
+  %15 = icmp ugt i32 %1, -4
+  br i1 %15, label %20, label %16
+
+16:                                               ; preds = %13, %16
+  %17 = phi i32 [ %18, %16 ], [ %14, %13 ]
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* noundef nonnull align 8 dereferenceable(9) getelementptr inbounds (%struct.S, %struct.S* @h, i64 0, i32 0, i64 0), i8* noundef nonnull align 1 dereferenceable(9) getelementptr inbounds ({ i8, i8, i8, i8, i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8, i8, i8, i8, i8 }* @__const.main.m, i64 0, i32 0), i64 9, i1 false), !tbaa.struct !7
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* noundef nonnull align 8 dereferenceable(9) getelementptr inbounds (%struct.S, %struct.S* @h, i64 0, i32 0, i64 0), i8* noundef nonnull align 1 dereferenceable(9) getelementptr inbounds ({ i8, i8, i8, i8, i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8, i8, i8, i8, i8 }* @__const.main.m, i64 0, i32 0), i64 9, i1 false), !tbaa.struct !7
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* noundef nonnull align 8 dereferenceable(9) getelementptr inbounds (%struct.S, %struct.S* @h, i64 0, i32 0, i64 0), i8* noundef nonnull align 1 dereferenceable(9) getelementptr inbounds ({ i8, i8, i8, i8, i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8, i8, i8, i8, i8 }* @__const.main.m, i64 0, i32 0), i64 9, i1 false), !tbaa.struct !7
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* noundef nonnull align 8 dereferenceable(9) getelementptr inbounds (%struct.S, %struct.S* @h, i64 0, i32 0, i64 0), i8* noundef nonnull align 1 dereferenceable(9) getelementptr inbounds ({ i8, i8, i8, i8, i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8, i8, i8, i8, i8 }* @__const.main.m, i64 0, i32 0), i64 9, i1 false), !tbaa.struct !7
+  %18 = add nsw i32 %17, 4
+  %19 = icmp eq i32 %18, 0
+  br i1 %19, label %20, label %16, !llvm.loop !10
+
+20:                                               ; preds = %16, %13
+  store i32 0, i32* @f, align 4, !tbaa !3
+  br label %31
+
+21:                                               ; preds = %0
+  %22 = load i72, i72* bitcast (%struct.S* @h to i72*), align 8
+  %23 = shl i72 %22, 14
+  %24 = ashr i72 %23, 57
+  %25 = trunc i72 %24 to i32
+  %26 = trunc i72 %24 to i64
+  %27 = mul nsw i32 %25, %25
+  %28 = zext i32 %27 to i64
+  %29 = sub nsw i64 0, %28
+  %30 = icmp eq i64 %26, %29
+  br i1 %30, label %33, label %31
+
+31:                                               ; preds = %20, %21
+  %32 = tail call i32 @putchar(i32 49)
+  br label %33
+
+33:                                               ; preds = %31, %21
+  ret i32 0
+}
+
+; Function Attrs: argmemonly mustprogress nofree nounwind willreturn
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) #1
+
+; Function Attrs: nofree nounwind
+declare noundef i32 @putchar(i32 noundef) local_unnamed_addr #2
+
+attributes #0 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { argmemonly mustprogress nofree nounwind willreturn }
+attributes #2 = { nofree nounwind }
+
+!llvm.module.flags = !{!0, !1}
+!llvm.ident = !{!2}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"uwtable", i32 1}
+!2 = !{!"Ubuntu clang version 13.0.0-++20210711063810+98c2e4115d8d-1~exp1~20210711164601.2534"}
+!3 = !{!4, !4, i64 0}
+!4 = !{!"int", !5, i64 0}
+!5 = !{!"omnipotent char", !6, i64 0}
+!6 = !{!"Simple C/C++ TBAA"}
+!7 = !{i64 0, i64 4, !3, i64 2, i64 4, !3, i64 2, i64 4, !3, i64 5, i64 4, !3, i64 7, i64 4, !3}
+!8 = distinct !{!8, !9}
+!9 = !{!"llvm.loop.unroll.disable"}
+!10 = distinct !{!10, !11}
+!11 = !{!"llvm.loop.mustprogress"}
diff --git a/SingleSource/UnitTests/testcase-InstCombine-1-IR.reference_output b/SingleSource/UnitTests/testcase-InstCombine-1-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-InstCombine-1-IR.reference_output
@@ -0,0 +1 @@
+exit 0
diff --git a/SingleSource/UnitTests/testcase-SemaStmt-1-IR.ll b/SingleSource/UnitTests/testcase-SemaStmt-1-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-SemaStmt-1-IR.ll
@@ -0,0 +1,46 @@
+; ModuleID = 'testcase-SemaStmt-1.c'
+source_filename = "testcase-SemaStmt-1.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@d = dso_local local_unnamed_addr global i32 10, align 4
+@b = dso_local local_unnamed_addr global i32 0, align 4
+@c = dso_local local_unnamed_addr global i32 0, align 4
+
+; Function Attrs: nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  store i32 0, ptr @b, align 4, !tbaa !5
+  %1 = load i32, ptr @d, align 4, !tbaa !5
+  %2 = add nsw i32 %1, 1
+  store i32 %2, ptr @d, align 4, !tbaa !5
+  store i32 %2, ptr @c, align 4, !tbaa !5
+  %3 = icmp eq i32 %2, 11
+  br i1 %3, label %5, label %4
+
+4:                                                ; preds = %0
+  tail call void @abort() #2
+  unreachable
+
+5:                                                ; preds = %0
+  ret i32 0
+}
+
+; Function Attrs: noreturn nounwind
+declare void @abort() local_unnamed_addr #1
+
+attributes #0 = { nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { noreturn nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #2 = { noreturn nounwind }
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+!llvm.ident = !{!4}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{!"Ubuntu clang version 15.0.0-++20220502063808+e547a333a433-1~exp1~20220502183820.463"}
+!5 = !{!6, !6, i64 0}
+!6 = !{!"int", !7, i64 0}
+!7 = !{!"omnipotent char", !8, i64 0}
+!8 = !{!"Simple C/C++ TBAA"}
diff --git a/SingleSource/UnitTests/testcase-SemaStmt-1-IR.reference_output b/SingleSource/UnitTests/testcase-SemaStmt-1-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-SemaStmt-1-IR.reference_output
@@ -0,0 +1 @@
+exit 0
diff --git a/SingleSource/UnitTests/testcase-SemaStmt-1.c b/SingleSource/UnitTests/testcase-SemaStmt-1.c
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-SemaStmt-1.c
@@ -0,0 +1,11 @@
+// COVERAGE: llvm-project/clang/lib/Sema/SemaStmt.cpp (1 new functions)
+// Compilation of this code should give unused value warning on return value of function declared with const attribute
+int b, c, d = 10;
+int main(void) {
+  __builtin_expect(1 ? b = 0 : 0, d++); // __builtin_expect used in other PRs test cases: like pr43385.c and pr85156.c
+  
+  c = d;
+  if (d != 11)
+    __builtin_abort();
+  return 0;
+}
diff --git a/SingleSource/UnitTests/testcase-SemaStmt-1.reference_output b/SingleSource/UnitTests/testcase-SemaStmt-1.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-SemaStmt-1.reference_output
@@ -0,0 +1 @@
+exit 0
diff --git a/SingleSource/UnitTests/testcase-Value-1-IR.ll b/SingleSource/UnitTests/testcase-Value-1-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-Value-1-IR.ll
@@ -0,0 +1,66 @@
+; ModuleID = 'testcase-Value-1.c'
+source_filename = "testcase-Value-1.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@b = dso_local local_unnamed_addr global i16 1, align 2
+@d = dso_local local_unnamed_addr global i16 5, align 2
+@h = dso_local local_unnamed_addr global i16 1, align 2
+@e = dso_local local_unnamed_addr global i32 1, align 4
+@f = dso_local local_unnamed_addr global i32 20, align 4
+@g = dso_local local_unnamed_addr global i32 1, align 4
+@j = dso_local local_unnamed_addr global i32 1, align 4
+@c = dso_local local_unnamed_addr global [6 x i8] zeroinitializer, align 1
+@a = dso_local local_unnamed_addr global i8 0, align 1
+@.str = private unnamed_addr constant [3 x i8] c"%d\00", align 1
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  %1 = load i32, i32* @f, align 4, !tbaa !3
+  %2 = load i8, i8* @a, align 1
+  %3 = icmp eq i32 %1, 0
+  br i1 %3, label %13, label %4
+
+4:                                                ; preds = %0
+  %5 = sext i8 %2 to i32
+  %6 = load i32, i32* @j, align 4
+  %7 = icmp eq i32 %6, 0
+  store i32 %5, i32* @f, align 4, !tbaa !3
+  br i1 %7, label %11, label %8
+
+8:                                                ; preds = %4
+  %9 = icmp eq i8 %2, 0
+  br i1 %9, label %11, label %10, !llvm.loop !7
+
+10:                                               ; preds = %8, %10
+  br label %10
+
+11:                                               ; preds = %4, %8
+  %12 = phi i32 [ 5, %8 ], [ 33, %4 ]
+  store i32 %12, i32* @g, align 4, !tbaa !3
+  br label %13
+
+13:                                               ; preds = %11, %0
+  store i32 0, i32* @e, align 4, !tbaa !3
+  %14 = tail call i32 (i8*, ...) @printf(i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32 0)
+  ret i32 0
+}
+
+; Function Attrs: nofree nounwind
+declare dso_local noundef i32 @printf(i8* nocapture noundef readonly, ...) local_unnamed_addr #1
+
+attributes #0 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nofree nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+
+!llvm.module.flags = !{!0, !1}
+!llvm.ident = !{!2}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"uwtable", i32 1}
+!2 = !{!"Ubuntu clang version 13.0.0-++20210711063810+98c2e4115d8d-1~exp1~20210711164601.2534"}
+!3 = !{!4, !4, i64 0}
+!4 = !{!"int", !5, i64 0}
+!5 = !{!"omnipotent char", !6, i64 0}
+!6 = !{!"Simple C/C++ TBAA"}
+!7 = distinct !{!7, !8}
+!8 = !{!"llvm.loop.mustprogress"}
diff --git a/SingleSource/UnitTests/testcase-Value-1-IR.reference_output b/SingleSource/UnitTests/testcase-Value-1-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-Value-1-IR.reference_output
@@ -0,0 +1 @@
+0exit 0
diff --git a/SingleSource/UnitTests/testcase-clang-lib-1-IR.ll b/SingleSource/UnitTests/testcase-clang-lib-1-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-clang-lib-1-IR.ll
@@ -0,0 +1,33 @@
+; ModuleID = 'testcase-clang-lib-1.c'
+source_filename = "testcase-clang-lib-1.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
+
+; Function Attrs: mustprogress nofree norecurse nosync nounwind readnone willreturn uwtable
+define dso_local i32 @foo(i32 noundef returned %0) local_unnamed_addr #0 {
+  ret i32 %0
+}
+
+; Function Attrs: nofree nounwind uwtable
+define dso_local i32 @main() local_unnamed_addr #1 {
+  %1 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull @.str, i32 noundef 3)
+  ret i32 0
+}
+
+; Function Attrs: nofree nounwind
+declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2
+
+attributes #0 = { mustprogress nofree norecurse nosync nounwind readnone willreturn uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nofree nounwind uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #2 = { nofree nounwind "frame-pointer"="none" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+!llvm.ident = !{!4}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{!"Ubuntu clang version 15.0.0-++20220502063808+e547a333a433-1~exp1~20220502183820.463"}
diff --git a/SingleSource/UnitTests/testcase-clang-lib-1-IR.reference_output b/SingleSource/UnitTests/testcase-clang-lib-1-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-clang-lib-1-IR.reference_output
@@ -0,0 +1,2 @@
+3
+exit 0
diff --git a/SingleSource/UnitTests/testcase-clang-lib-1.c b/SingleSource/UnitTests/testcase-clang-lib-1.c
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-clang-lib-1.c
@@ -0,0 +1,14 @@
+// COVERAGE: llvm-project/clang/include/clang/AST/EvaluatedExprVisitor.h (1 new functions)
+// COVERAGE: llvm-project/clang/lib/AST/ComputeDependence.cpp (1 new functions)
+// COVERAGE: llvm-project/clang/lib/AST/Expr.cpp (2 new functions)
+// COVERAGE: llvm-project/clang/lib/CodeGen/CGExprScalar.cpp (1 new functions)
+// COVERAGE: llvm-project/clang/lib/Parse/ParseExpr.cpp (1 new functions)
+// COVERAGE: llvm-project/clang/lib/Sema/SemaExpr.cpp (2 new functions)
+#include <stdio.h>
+typedef int (*fptr)(int);
+int foo(int i) { return i; }
+int main() {
+  int b = _Generic(foo, fptr : 3, int : 4);
+  printf("%d\n", b);
+  return 0;
+}
diff --git a/SingleSource/UnitTests/testcase-clang-lib-1.reference_output b/SingleSource/UnitTests/testcase-clang-lib-1.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-clang-lib-1.reference_output
@@ -0,0 +1,2 @@
+3
+exit 0
diff --git a/SingleSource/UnitTests/testcase-clang-lib-2-IR.ll b/SingleSource/UnitTests/testcase-clang-lib-2-IR.ll
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-clang-lib-2-IR.ll
@@ -0,0 +1,20 @@
+; ModuleID = 'testcase-clang-lib-2.c'
+source_filename = "testcase-clang-lib-2.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+
+; Function Attrs: mustprogress nofree norecurse nosync nounwind readnone willreturn uwtable
+define dso_local i32 @main() local_unnamed_addr #0 {
+  ret i32 0
+}
+
+attributes #0 = { mustprogress nofree norecurse nosync nounwind readnone willreturn uwtable "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+
+!llvm.module.flags = !{!0, !1, !2, !3}
+!llvm.ident = !{!4}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{!"Ubuntu clang version 15.0.0-++20220502063808+e547a333a433-1~exp1~20220502183820.463"}
diff --git a/SingleSource/UnitTests/testcase-clang-lib-2-IR.reference_output b/SingleSource/UnitTests/testcase-clang-lib-2-IR.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-clang-lib-2-IR.reference_output
@@ -0,0 +1 @@
+exit 0
diff --git a/SingleSource/UnitTests/testcase-clang-lib-2.c b/SingleSource/UnitTests/testcase-clang-lib-2.c
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-clang-lib-2.c
@@ -0,0 +1,14 @@
+// COVERAGE: llvm-project/clang/lib/Edit/Commit.cpp (1 new functions)
+// COVERAGE: llvm-project/clang/lib/Edit/EditedSource.cpp (4 new functions)
+// COVERAGE: llvm-project/clang/lib/Lex/Lexer.cpp (5 new functions)
+// Test should warn against unused values
+#include "stdint.h"
+extern void abort();
+int main() {
+  uint32_t a = 4;
+  uint32_t b = 1;
+  b = (0 && 9 && a, 2, a);
+  if (!b)
+    abort();
+  return 0;
+}
diff --git a/SingleSource/UnitTests/testcase-clang-lib-2.reference_output b/SingleSource/UnitTests/testcase-clang-lib-2.reference_output
new file mode 100644
--- /dev/null
+++ b/SingleSource/UnitTests/testcase-clang-lib-2.reference_output
@@ -0,0 +1 @@
+exit 0