diff --git a/compiler-rt/lib/builtins/CMakeLists.txt b/compiler-rt/lib/builtins/CMakeLists.txt
--- a/compiler-rt/lib/builtins/CMakeLists.txt
+++ b/compiler-rt/lib/builtins/CMakeLists.txt
@@ -52,8 +52,10 @@
   addvti3.c
   apple_versioning.c
   ashldi3.c
+  ashlsi3.c
   ashlti3.c
   ashrdi3.c
+  ashrsi3.c
   ashrti3.c
   bswapdi2.c
   bswapsi2.c
@@ -110,6 +112,7 @@
   fp_mode.c
   int_util.c
   lshrdi3.c
+  lshrsi3.c
   lshrti3.c
   moddi3.c
   modsi3.c
diff --git a/compiler-rt/lib/builtins/ashldi3.c b/compiler-rt/lib/builtins/ashldi3.c
--- a/compiler-rt/lib/builtins/ashldi3.c
+++ b/compiler-rt/lib/builtins/ashldi3.c
@@ -12,25 +12,16 @@
 
 #include "int_lib.h"
 
+typedef di_int ashl_int_t;
+typedef dwords ashl_words_t;
+#include "int_ashl_impl.inc"
+
 // Returns: a << b
 
 // Precondition:  0 <= b < bits_in_dword
 
 COMPILER_RT_ABI di_int __ashldi3(di_int a, int b) {
-  const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT);
-  dwords input;
-  dwords result;
-  input.all = a;
-  if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ {
-    result.s.low = 0;
-    result.s.high = input.s.low << (b - bits_in_word);
-  } else /* 0 <= b < bits_in_word */ {
-    if (b == 0)
-      return a;
-    result.s.low = input.s.low << b;
-    result.s.high = (input.s.high << b) | (input.s.low >> (bits_in_word - b));
-  }
-  return result.all;
+  return __ashlXi3(a, b);
 }
 
 #if defined(__ARM_EABI__)
diff --git a/compiler-rt/lib/builtins/ashlsi3.c b/compiler-rt/lib/builtins/ashlsi3.c
new file mode 100644
--- /dev/null
+++ b/compiler-rt/lib/builtins/ashlsi3.c
@@ -0,0 +1,25 @@
+// ====-- ashlsi3.c - Implement __ashlsi3 ---------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __ashlsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+typedef si_int ashl_int_t;
+typedef swords ashl_words_t;
+#include "int_ashl_impl.inc"
+
+// Returns: a << b
+
+// Preconsition:  0 <= b < bits_in_sword
+
+COMPILER_RT_ABI si_int __ashlsi3(si_int a, int b) {
+  return __ashlXi3(a, b);
+}
diff --git a/compiler-rt/lib/builtins/ashlti3.c b/compiler-rt/lib/builtins/ashlti3.c
--- a/compiler-rt/lib/builtins/ashlti3.c
+++ b/compiler-rt/lib/builtins/ashlti3.c
@@ -14,25 +14,16 @@
 
 #ifdef CRT_HAS_128BIT
 
+typedef ti_int ashl_int_t;
+typedef twords ashl_words_t;
+#include "int_ashl_impl.inc"
+
 // Returns: a << b
 
 // Precondition:  0 <= b < bits_in_tword
 
 COMPILER_RT_ABI ti_int __ashlti3(ti_int a, si_int b) {
-  const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT);
-  twords input;
-  twords result;
-  input.all = a;
-  if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ {
-    result.s.low = 0;
-    result.s.high = input.s.low << (b - bits_in_dword);
-  } else /* 0 <= b < bits_in_dword */ {
-    if (b == 0)
-      return a;
-    result.s.low = input.s.low << b;
-    result.s.high = (input.s.high << b) | (input.s.low >> (bits_in_dword - b));
-  }
-  return result.all;
+  return __ashlXi3(a, b);
 }
 
 #endif // CRT_HAS_128BIT
diff --git a/compiler-rt/lib/builtins/ashrdi3.c b/compiler-rt/lib/builtins/ashrdi3.c
--- a/compiler-rt/lib/builtins/ashrdi3.c
+++ b/compiler-rt/lib/builtins/ashrdi3.c
@@ -12,26 +12,16 @@
 
 #include "int_lib.h"
 
+typedef di_int ashr_int_t;
+typedef dwords ashr_words_t;
+#include "int_ashr_impl.inc"
+
 // Returns: arithmetic a >> b
 
 // Precondition:  0 <= b < bits_in_dword
 
 COMPILER_RT_ABI di_int __ashrdi3(di_int a, int b) {
-  const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT);
-  dwords input;
-  dwords result;
-  input.all = a;
-  if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ {
-    // result.s.high = input.s.high < 0 ? -1 : 0
-    result.s.high = input.s.high >> (bits_in_word - 1);
-    result.s.low = input.s.high >> (b - bits_in_word);
-  } else /* 0 <= b < bits_in_word */ {
-    if (b == 0)
-      return a;
-    result.s.high = input.s.high >> b;
-    result.s.low = (input.s.high << (bits_in_word - b)) | (input.s.low >> b);
-  }
-  return result.all;
+  return __ashrXi3(a, b);
 }
 
 #if defined(__ARM_EABI__)
diff --git a/compiler-rt/lib/builtins/ashrsi3.c b/compiler-rt/lib/builtins/ashrsi3.c
new file mode 100644
--- /dev/null
+++ b/compiler-rt/lib/builtins/ashrsi3.c
@@ -0,0 +1,25 @@
+//===-- ashrsi3.c - Implement __ashrsi3 -----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __ashrsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+typedef si_int ashr_int_t;
+typedef swords ashr_words_t;
+#include "int_ashr_impl.inc"
+
+// Returns: arithmetic a >> b
+
+// Precondition:  0 <= b < bits_in_dword
+
+COMPILER_RT_ABI si_int __ashrsi3(si_int a, int b) {
+  return __ashrXi3(a, b);
+}
diff --git a/compiler-rt/lib/builtins/ashrti3.c b/compiler-rt/lib/builtins/ashrti3.c
--- a/compiler-rt/lib/builtins/ashrti3.c
+++ b/compiler-rt/lib/builtins/ashrti3.c
@@ -14,26 +14,16 @@
 
 #ifdef CRT_HAS_128BIT
 
+typedef ti_int ashr_int_t;
+typedef twords ashr_words_t;
+#include "int_ashr_impl.inc"
+
 // Returns: arithmetic a >> b
 
 // Precondition:  0 <= b < bits_in_tword
 
 COMPILER_RT_ABI ti_int __ashrti3(ti_int a, si_int b) {
-  const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT);
-  twords input;
-  twords result;
-  input.all = a;
-  if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ {
-    // result.s.high = input.s.high < 0 ? -1 : 0
-    result.s.high = input.s.high >> (bits_in_dword - 1);
-    result.s.low = input.s.high >> (b - bits_in_dword);
-  } else /* 0 <= b < bits_in_dword */ {
-    if (b == 0)
-      return a;
-    result.s.high = input.s.high >> b;
-    result.s.low = (input.s.high << (bits_in_dword - b)) | (input.s.low >> b);
-  }
-  return result.all;
+  return __ashrXi3(a, b);
 }
 
 #endif // CRT_HAS_128BIT
diff --git a/compiler-rt/lib/builtins/int_ashl_impl.inc b/compiler-rt/lib/builtins/int_ashl_impl.inc
new file mode 100644
--- /dev/null
+++ b/compiler-rt/lib/builtins/int_ashl_impl.inc
@@ -0,0 +1,30 @@
+//===-- int_ashl_impl.inc - Integer bitshifts -----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Helpers used by __ashlsi3, __ashldi3, and __ashlti3.
+//
+//===----------------------------------------------------------------------===//
+
+static inline ashl_int_t __ashlXi3(ashl_int_t a, int b) {
+  const int bits_in_word = (int)(sizeof(ashl_int_t) * CHAR_BIT) / 2;
+  ashl_words_t input;
+  ashl_words_t result;
+  input.all = a;
+  if (b & bits_in_word) {
+    // bits_in_word <= b < bits_in_sword
+    result.s.low = 0;
+    result.s.high = input.s.low << (b - bits_in_word);
+  } else {
+    // 0 <= b < bits_in_word
+    if (b == 0)
+      return a;
+    result.s.low = input.s.low << b;
+    result.s.high = (input.s.high << b) | (input.s.low >> (bits_in_word - b));
+  }
+  return result.all;
+}
diff --git a/compiler-rt/lib/builtins/int_ashr_impl.inc b/compiler-rt/lib/builtins/int_ashr_impl.inc
new file mode 100644
--- /dev/null
+++ b/compiler-rt/lib/builtins/int_ashr_impl.inc
@@ -0,0 +1,29 @@
+//===-- int_ashr_impl.inc - Integer bitshifts -----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Helpers used by __ashrsi3, __ashrdi3, and __ashrti3.
+//
+//===----------------------------------------------------------------------===//
+
+static __inline ashr_int_t __ashrXi3(ashr_int_t a, int b) {
+  const int bits_in_word = (int)(sizeof(ashr_int_t) * CHAR_BIT) / 2;
+  ashr_words_t input;
+  ashr_words_t result;
+  input.all = a;
+  if (b & bits_in_word) /* bits_in_word <= b < bits_in_sword */ {
+    // result.s.high = input.s.high < 0 ? -1 : 0
+    result.s.high = input.s.high >> (bits_in_word - 1);
+    result.s.low = input.s.high >> (b - bits_in_word);
+  } else /* 0 <= b < bits_in_word */ {
+    if (b == 0)
+      return a;
+    result.s.high = input.s.high >> b;
+    result.s.low = (input.s.high << (bits_in_word - b)) | (input.s.low >> b);
+  }
+  return result.all;
+}
diff --git a/compiler-rt/lib/builtins/int_lshr_impl.inc b/compiler-rt/lib/builtins/int_lshr_impl.inc
new file mode 100644
--- /dev/null
+++ b/compiler-rt/lib/builtins/int_lshr_impl.inc
@@ -0,0 +1,30 @@
+//===-- int_lshr_impl.inc - Integer bitshifts -----------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Helpers used by __lshrsi3, __lshrdi3, and __lshrti3.
+//
+//===----------------------------------------------------------------------===//
+
+static __inline lshr_int_t __lshrXi3(lshr_int_t a, int b) {
+  const int bits_in_word = (int)(sizeof(lshr_int_t) * CHAR_BIT) / 2;
+  lshr_uwords_t input;
+  lshr_uwords_t result;
+  input.all = a;
+  if (b & bits_in_word) {
+    // bits_in_word <= b < bits_in_sword
+    result.s.high = 0;
+    result.s.low = input.s.high >> (b - bits_in_word);
+  } else {
+    // 0 <= b < bits_in_word
+    if (b == 0)
+      return a;
+    result.s.high = input.s.high >> b;
+    result.s.low = (input.s.high << (bits_in_word - b)) | (input.s.low >> b);
+  }
+  return result.all;
+}
diff --git a/compiler-rt/lib/builtins/int_types.h b/compiler-rt/lib/builtins/int_types.h
--- a/compiler-rt/lib/builtins/int_types.h
+++ b/compiler-rt/lib/builtins/int_types.h
@@ -18,6 +18,9 @@
 
 #include "int_endianness.h"
 
+typedef int16_t hi_int;
+typedef uint16_t hu_int;
+
 // si_int is defined in Linux sysroot's asm-generic/siginfo.h
 #ifdef si_int
 #undef si_int
@@ -37,6 +40,32 @@
 typedef int64_t di_int;
 typedef uint64_t du_int;
 
+typedef union {
+  si_int all;
+  struct {
+#if _YUGA_LITTLE_ENDIAN
+    hu_int low;
+    hi_int high;
+#else
+    hi_int high;
+    hu_int low;
+#endif // _YUGA_LITTLE_ENDIAN
+  } s;
+} swords;
+
+typedef union {
+  su_int all;
+  struct {
+#if _YUGA_LITTLE_ENDIAN
+    hu_int low;
+    hu_int high;
+#else
+    hu_int high;
+    hu_int low;
+#endif // _YUGA_LITTLE_ENDIAN
+  } s;
+} uswords;
+
 typedef union {
   di_int all;
   struct {
diff --git a/compiler-rt/lib/builtins/lshrdi3.c b/compiler-rt/lib/builtins/lshrdi3.c
--- a/compiler-rt/lib/builtins/lshrdi3.c
+++ b/compiler-rt/lib/builtins/lshrdi3.c
@@ -12,25 +12,16 @@
 
 #include "int_lib.h"
 
+typedef di_int lshr_int_t;
+typedef udwords lshr_uwords_t;
+#include "int_lshr_impl.inc"
+
 // Returns: logical a >> b
 
 // Precondition:  0 <= b < bits_in_dword
 
 COMPILER_RT_ABI di_int __lshrdi3(di_int a, int b) {
-  const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT);
-  udwords input;
-  udwords result;
-  input.all = a;
-  if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ {
-    result.s.high = 0;
-    result.s.low = input.s.high >> (b - bits_in_word);
-  } else /* 0 <= b < bits_in_word */ {
-    if (b == 0)
-      return a;
-    result.s.high = input.s.high >> b;
-    result.s.low = (input.s.high << (bits_in_word - b)) | (input.s.low >> b);
-  }
-  return result.all;
+  return __lshrXi3(a, b);
 }
 
 #if defined(__ARM_EABI__)
diff --git a/compiler-rt/lib/builtins/lshrsi3.c b/compiler-rt/lib/builtins/lshrsi3.c
new file mode 100644
--- /dev/null
+++ b/compiler-rt/lib/builtins/lshrsi3.c
@@ -0,0 +1,25 @@
+//===-- lshrsi3.c - Implement __lshrsi3 -----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __lshrsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+typedef si_int lshr_int_t;
+typedef uswords lshr_uwords_t;
+#include "int_lshr_impl.inc"
+
+// Returns: logical a >> b
+
+// Precondition:  0 <= b < bits_in_sword
+
+COMPILER_RT_ABI si_int __lshrsi3(si_int a, int b) {
+  return __lshrXi3(a, b);
+}
diff --git a/compiler-rt/lib/builtins/lshrti3.c b/compiler-rt/lib/builtins/lshrti3.c
--- a/compiler-rt/lib/builtins/lshrti3.c
+++ b/compiler-rt/lib/builtins/lshrti3.c
@@ -14,25 +14,16 @@
 
 #ifdef CRT_HAS_128BIT
 
+typedef ti_int lshr_int_t;
+typedef utwords lshr_uwords_t;
+#include "int_lshr_impl.inc"
+
 // Returns: logical a >> b
 
 // Precondition:  0 <= b < bits_in_tword
 
 COMPILER_RT_ABI ti_int __lshrti3(ti_int a, si_int b) {
-  const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT);
-  utwords input;
-  utwords result;
-  input.all = a;
-  if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ {
-    result.s.high = 0;
-    result.s.low = input.s.high >> (b - bits_in_dword);
-  } else /* 0 <= b < bits_in_dword */ {
-    if (b == 0)
-      return a;
-    result.s.high = input.s.high >> b;
-    result.s.low = (input.s.high << (bits_in_dword - b)) | (input.s.low >> b);
-  }
-  return result.all;
+  return __lshrXi3(a, b);
 }
 
 #endif // CRT_HAS_128BIT
diff --git a/compiler-rt/test/builtins/Unit/ashlsi3_test.c b/compiler-rt/test/builtins/Unit/ashlsi3_test.c
new file mode 100644
--- /dev/null
+++ b/compiler-rt/test/builtins/Unit/ashlsi3_test.c
@@ -0,0 +1,74 @@
+// REQUIRES: librt_has_ashlsi3
+// RUN: %clang_builtins %s %librt -o %t && %run %t
+//===-- ashlsi3_test.c - Test __ashlsi3 -----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __ashlsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: a << b
+
+// Precondition:  0 <= b < bits_in_dword
+
+COMPILER_RT_ABI si_int __ashlsi3(si_int a, int b);
+
+int test__ashlsi3(si_int a, int b, si_int expected) {
+  si_int x = __ashlsi3(a, b);
+  if (x != expected)
+    printf("error in __ashlsi3: %X << %d = %X, expected %X\n",
+           a, b, __ashlsi3(a, b), expected);
+  return x != expected;
+}
+
+int main() {
+  if (test__ashlsi3(0x01234567, 0, 0x1234567))
+    return 1;
+  if (test__ashlsi3(0x01234567, 1, 0x2468ACE))
+    return 1;
+  if (test__ashlsi3(0x01234567, 2, 0x048D159C))
+    return 1;
+  if (test__ashlsi3(0x01234567, 3, 0x091A2B38))
+    return 1;
+  if (test__ashlsi3(0x01234567, 4, 0x12345670))
+    return 1;
+
+  if (test__ashlsi3(0x01234567, 12, 0x34567000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 13, 0x68ACE000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 14, 0xD159C000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 15, 0xA2B38000))
+    return 1;
+
+  if (test__ashlsi3(0x01234567, 16, 0x45670000))
+    return 1;
+
+  if (test__ashlsi3(0x01234567, 17, 0x8ACE0000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 18, 0x159C0000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 19, 0x2B380000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 20, 0x56700000))
+    return 1;
+
+  if (test__ashlsi3(0x01234567, 28, 0x70000000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 29, 0xE0000000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 30, 0xC0000000))
+    return 1;
+  if (test__ashlsi3(0x01234567, 31, 0x80000000))
+    return 1;
+  return 0;
+}
diff --git a/compiler-rt/test/builtins/Unit/ashrsi3_test.c b/compiler-rt/test/builtins/Unit/ashrsi3_test.c
new file mode 100644
--- /dev/null
+++ b/compiler-rt/test/builtins/Unit/ashrsi3_test.c
@@ -0,0 +1,115 @@
+// REQUIRES: librt_has_ashrsi3
+// RUN: %clang_builtins %s %librt -o %t && %run %t
+//===-- ashrsi3_test.c - Test __ashrsi3 -----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __ashrsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: arithmetic a >> b
+
+// Precondition:  0 <= b < bits_in_dword
+
+COMPILER_RT_ABI si_int __ashrsi3(si_int a, int b);
+
+int test__ashrsi3(si_int a, int b, si_int expected) {
+  si_int x = __ashrsi3(a, b);
+  if (x != expected)
+    printf("error in __ashrsi3: %X >> %d = %X, expected %X\n",
+           a, b, __ashrsi3(a, b), expected);
+  return x != expected;
+}
+
+int main() {
+  if (test__ashrsi3(0x01234567, 0, 0x1234567))
+    return 1;
+  if (test__ashrsi3(0x01234567, 1, 0x91A2B3))
+    return 1;
+  if (test__ashrsi3(0x01234567, 2, 0x48D159))
+    return 1;
+  if (test__ashrsi3(0x01234567, 3, 0x2468AC))
+    return 1;
+  if (test__ashrsi3(0x01234567, 4, 0x123456))
+    return 1;
+
+  if (test__ashrsi3(0x01234567, 12, 0x1234))
+    return 1;
+  if (test__ashrsi3(0x01234567, 13, 0x91A))
+    return 1;
+  if (test__ashrsi3(0x01234567, 14, 0x48D))
+    return 1;
+  if (test__ashrsi3(0x01234567, 15, 0x246))
+    return 1;
+
+  if (test__ashrsi3(0x01234567, 16, 0x123))
+    return 1;
+
+  if (test__ashrsi3(0x01234567, 17, 0x91))
+    return 1;
+  if (test__ashrsi3(0x01234567, 18, 0x48))
+    return 1;
+  if (test__ashrsi3(0x01234567, 19, 0x24))
+    return 1;
+  if (test__ashrsi3(0x01234567, 20, 0x12))
+    return 1;
+
+  if (test__ashrsi3(0x01234567, 28, 0))
+    return 1;
+  if (test__ashrsi3(0x01234567, 29, 0))
+    return 1;
+  if (test__ashrsi3(0x01234567, 30, 0))
+    return 1;
+  if (test__ashrsi3(0x01234567, 31, 0))
+    return 1;
+
+  if (test__ashrsi3(0xFEDCBA98, 0, 0xFEDCBA98))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 1, 0xFF6E5D4C))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 2, 0xFFB72EA6))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 3, 0xFFDB9753))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 4, 0xFFEDCBA9))
+    return 1;
+
+  if (test__ashrsi3(0xFEDCBA98, 12, 0xFFFFEDCB))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 13, 0xFFFFF6E5))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 14, 0xFFFFFB72))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 15, 0xFFFFFDB9))
+    return 1;
+
+  if (test__ashrsi3(0xFEDCBA98, 16, 0xFFFFFEDC))
+    return 1;
+
+  if (test__ashrsi3(0xFEDCBA98, 17, 0xFFFFFF6E))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 18, 0xFFFFFFB7))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 19, 0xFFFFFFDB))
+    return 1;
+  if (test__ashrsi3(0xFEDCBA98, 20, 0xFFFFFFED))
+    return 1;
+
+  if (test__ashrsi3(0xAEDCBA98, 28, 0xFFFFFFFA))
+    return 1;
+  if (test__ashrsi3(0xAEDCBA98, 29, 0xFFFFFFFD))
+    return 1;
+  if (test__ashrsi3(0xAEDCBA98, 30, 0xFFFFFFFE))
+    return 1;
+  if (test__ashrsi3(0xAEDCBA98, 31, 0xFFFFFFFF))
+    return 1;
+  return 0;
+}
diff --git a/compiler-rt/test/builtins/Unit/lshrsi3_test.c b/compiler-rt/test/builtins/Unit/lshrsi3_test.c
new file mode 100644
--- /dev/null
+++ b/compiler-rt/test/builtins/Unit/lshrsi3_test.c
@@ -0,0 +1,115 @@
+// REQUIRES: librt_has_lshrsi3
+// RUN: %clang_builtins %s %librt -o %t && %run %t
+//===-- lshrsi3_test.c - Test __lshrsi3 -----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __lshrsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: logical a >> b
+
+// Precondition:  0 <= b < bits_in_dword
+
+COMPILER_RT_ABI si_int __lshrsi3(si_int a, int b);
+
+int test__lshrsi3(si_int a, int b, si_int expected) {
+  si_int x = __lshrsi3(a, b);
+  if (x != expected)
+    printf("error in __lshrsi3: %X >> %d = %X, expected %X\n",
+           a, b, __lshrsi3(a, b), expected);
+  return x != expected;
+}
+
+int main() {
+  if (test__lshrsi3(0x01234567, 0, 0x1234567))
+    return 1;
+  if (test__lshrsi3(0x01234567, 1, 0x91A2B3))
+    return 1;
+  if (test__lshrsi3(0x01234567, 2, 0x48D159))
+    return 1;
+  if (test__lshrsi3(0x01234567, 3, 0x2468AC))
+    return 1;
+  if (test__lshrsi3(0x01234567, 4, 0x123456))
+    return 1;
+
+  if (test__lshrsi3(0x01234567, 12, 0x1234))
+    return 1;
+  if (test__lshrsi3(0x01234567, 13, 0x91A))
+    return 1;
+  if (test__lshrsi3(0x01234567, 14, 0x48D))
+    return 1;
+  if (test__lshrsi3(0x01234567, 15, 0x246))
+    return 1;
+
+  if (test__lshrsi3(0x01234567, 16, 0x123))
+    return 1;
+
+  if (test__lshrsi3(0x01234567, 17, 0x91))
+    return 1;
+  if (test__lshrsi3(0x01234567, 18, 0x48))
+    return 1;
+  if (test__lshrsi3(0x01234567, 19, 0x24))
+    return 1;
+  if (test__lshrsi3(0x01234567, 20, 0x12))
+    return 1;
+
+  if (test__lshrsi3(0x01234567, 28, 0))
+    return 1;
+  if (test__lshrsi3(0x01234567, 29, 0))
+    return 1;
+  if (test__lshrsi3(0x01234567, 30, 0))
+    return 1;
+  if (test__lshrsi3(0x01234567, 31, 0))
+    return 1;
+
+  if (test__lshrsi3(0xFEDCBA98, 0, 0xFEDCBA98))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 1, 0x7F6E5D4C))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 2, 0x3FB72EA6))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 3, 0x1FDB9753))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 4, 0xFEDCBA9))
+    return 1;
+
+  if (test__lshrsi3(0xFEDCBA98, 12, 0xFEDCB))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 13, 0x7F6E5))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 14, 0x3FB72))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 15, 0x1FDB9))
+    return 1;
+
+  if (test__lshrsi3(0xFEDCBA98, 16, 0xFEDC))
+    return 1;
+
+  if (test__lshrsi3(0xFEDCBA98, 17, 0x7F6E))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 18, 0x3FB7))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 19, 0x1FDB))
+    return 1;
+  if (test__lshrsi3(0xFEDCBA98, 20, 0xFED))
+    return 1;
+
+  if (test__lshrsi3(0xAEDCBA98, 28, 0xA))
+    return 1;
+  if (test__lshrsi3(0xAEDCBA98, 29, 0x5))
+    return 1;
+  if (test__lshrsi3(0xAEDCBA98, 30, 0x2))
+    return 1;
+  if (test__lshrsi3(0xAEDCBA98, 31, 0x1))
+    return 1;
+  return 0;
+}