diff --git a/llvm/test/lit.cfg b/llvm/test/lit.cfg
index cc27705b2a0d..7d298f64a5fd 100644
--- a/llvm/test/lit.cfg
+++ b/llvm/test/lit.cfg
@@ -294,6 +294,7 @@ for pattern in [r"\bbugpoint\b(?!-)",
                 r"\bllvm-dsymutil\b",
                 r"\bllvm-dwarfdump\b",
                 r"\bllvm-extract\b",
+                r"\bllvm-isel-fuzzer\b",
                 r"\bllvm-lib\b",
                 r"\bllvm-link\b",
                 r"\bllvm-lto\b",
diff --git a/llvm/test/tools/llvm-isel-fuzzer/aarch64-empty-bc.ll b/llvm/test/tools/llvm-isel-fuzzer/aarch64-empty-bc.ll
new file mode 100644
index 000000000000..187119919164
--- /dev/null
+++ b/llvm/test/tools/llvm-isel-fuzzer/aarch64-empty-bc.ll
@@ -0,0 +1,6 @@
+; REQUIRES: aarch64-registered-target
+
+; RUN: opt -o %t %s
+; RUN: llvm-isel-fuzzer %t -ignore_remaining_args=1 -mtriple aarch64 2>&1 | FileCheck %s
+
+; CHECK: Running
diff --git a/llvm/test/tools/llvm-isel-fuzzer/aarch64-empty.ll b/llvm/test/tools/llvm-isel-fuzzer/aarch64-empty.ll
new file mode 100644
index 000000000000..9d8c8916ea3c
--- /dev/null
+++ b/llvm/test/tools/llvm-isel-fuzzer/aarch64-empty.ll
@@ -0,0 +1,6 @@
+; REQUIRES: aarch64-registered-target
+
+; RUN: echo > %t
+; RUN: llvm-isel-fuzzer %t -ignore_remaining_args=1 -mtriple aarch64 2>&1 | FileCheck %s
+
+; CHECK: Running
diff --git a/llvm/test/tools/llvm-isel-fuzzer/missing-triple.ll b/llvm/test/tools/llvm-isel-fuzzer/missing-triple.ll
new file mode 100644
index 000000000000..558d77f6bba2
--- /dev/null
+++ b/llvm/test/tools/llvm-isel-fuzzer/missing-triple.ll
@@ -0,0 +1,4 @@
+; RUN: opt -o %t %s
+; RUN: not llvm-isel-fuzzer %t 2>&1 | FileCheck %s
+
+; CHECK: -mtriple must be specified
diff --git a/llvm/test/tools/llvm-isel-fuzzer/x86-empty-bc.ll b/llvm/test/tools/llvm-isel-fuzzer/x86-empty-bc.ll
new file mode 100644
index 000000000000..d6d2b7fe94ca
--- /dev/null
+++ b/llvm/test/tools/llvm-isel-fuzzer/x86-empty-bc.ll
@@ -0,0 +1,6 @@
+; REQUIRES: x86-registered-target
+
+; RUN: opt -o %t %s
+; RUN: llvm-isel-fuzzer %t -ignore_remaining_args=1 -mtriple x86_64 2>&1 | FileCheck %s
+
+; CHECK: Running
diff --git a/llvm/test/tools/llvm-isel-fuzzer/x86-empty.ll b/llvm/test/tools/llvm-isel-fuzzer/x86-empty.ll
new file mode 100644
index 000000000000..35833e2ef4da
--- /dev/null
+++ b/llvm/test/tools/llvm-isel-fuzzer/x86-empty.ll
@@ -0,0 +1,6 @@
+; REQUIRES: x86-registered-target
+
+; RUN: echo > %t
+; RUN: llvm-isel-fuzzer %t -ignore_remaining_args=1 -mtriple x86_64 2>&1 | FileCheck %s
+
+; CHECK: Running