diff --git a/test/Transforms/InstCombine/saddo.ll b/test/Transforms/InstCombine/saddo.ll
new file mode 100644
index 00000000000..5a3c8f5844e
--- /dev/null
+++ b/test/Transforms/InstCombine/saddo.ll
@@ -0,0 +1,103 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+declare { i64, i1 } @llvm.sadd.with.overflow.i64(i64, i64)
+declare { i8, i1 } @llvm.sadd.with.overflow.i8(i8, i8)
+
+define i1 @test_generic(i64 %a, i64 %b) {
+; CHECK-LABEL: @test_generic(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i64, i1 } @llvm.sadd.with.overflow.i64(i64 [[A:%.*]], i64 [[B:%.*]])
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i64, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i64, i1 } @llvm.sadd.with.overflow.i64(i64 %a, i64 %b)
+  %overflow = extractvalue { i64, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant0(i8 %a) {
+; CHECK-LABEL: @test_constant0(
+; CHECK-NEXT:    ret i1 false
+;
+  %res = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 %a, i8 0)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant1(i8 %a) {
+; CHECK-LABEL: @test_constant1(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 1)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 %a, i8 1)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant2(i8 %a) {
+; CHECK-LABEL: @test_constant2(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 2)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 %a, i8 2)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant3(i8 %a) {
+; CHECK-LABEL: @test_constant3(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 3)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 %a, i8 3)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant4(i8 %a) {
+; CHECK-LABEL: @test_constant4(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 4)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 %a, i8 4)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant127(i8 %a) {
+; CHECK-LABEL: @test_constant127(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 127)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 %a, i8 127)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant128(i8 %a) {
+; CHECK-LABEL: @test_constant128(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 -128)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 %a, i8 128)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant255(i8 %a) {
+; CHECK-LABEL: @test_constant255(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 -1)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 %a, i8 255)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
diff --git a/test/Transforms/InstCombine/smulo.ll b/test/Transforms/InstCombine/smulo.ll
new file mode 100644
index 00000000000..47315202f95
--- /dev/null
+++ b/test/Transforms/InstCombine/smulo.ll
@@ -0,0 +1,102 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+declare { i64, i1 } @llvm.smul.with.overflow.i64(i64, i64)
+declare { i8, i1 } @llvm.smul.with.overflow.i8(i8, i8)
+
+define i1 @test_generic(i64 %a, i64 %b) {
+; CHECK-LABEL: @test_generic(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i64, i1 } @llvm.smul.with.overflow.i64(i64 [[A:%.*]], i64 [[B:%.*]])
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i64, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i64, i1 } @llvm.smul.with.overflow.i64(i64 %a, i64 %b)
+  %overflow = extractvalue { i64, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant0(i8 %a) {
+; CHECK-LABEL: @test_constant0(
+; CHECK-NEXT:    ret i1 false
+;
+  %res = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 0)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant1(i8 %a) {
+; CHECK-LABEL: @test_constant1(
+; CHECK-NEXT:    ret i1 false
+;
+  %res = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 1)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant2(i8 %a) {
+; CHECK-LABEL: @test_constant2(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 [[A:%.*]], i8 2)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 2)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant3(i8 %a) {
+; CHECK-LABEL: @test_constant3(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 [[A:%.*]], i8 3)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 3)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant4(i8 %a) {
+; CHECK-LABEL: @test_constant4(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 [[A:%.*]], i8 4)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 4)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+
+define i1 @test_constant127(i8 %a) {
+; CHECK-LABEL: @test_constant127(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 [[A:%.*]], i8 127)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 127)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant128(i8 %a) {
+; CHECK-LABEL: @test_constant128(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 [[A:%.*]], i8 -128)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 128)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant255(i8 %a) {
+; CHECK-LABEL: @test_constant255(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 [[A:%.*]], i8 -1)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.smul.with.overflow.i8(i8 %a, i8 255)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
diff --git a/test/Transforms/InstCombine/ssubo.ll b/test/Transforms/InstCombine/ssubo.ll
new file mode 100644
index 00000000000..9b11f6ac145
--- /dev/null
+++ b/test/Transforms/InstCombine/ssubo.ll
@@ -0,0 +1,104 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+declare { i64, i1 } @llvm.ssub.with.overflow.i64(i64, i64)
+declare { i8, i1 } @llvm.ssub.with.overflow.i8(i8, i8)
+
+define i1 @test_generic(i64 %a, i64 %b) {
+; CHECK-LABEL: @test_generic(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i64, i1 } @llvm.ssub.with.overflow.i64(i64 [[A:%.*]], i64 [[B:%.*]])
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i64, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i64, i1 } @llvm.ssub.with.overflow.i64(i64 %a, i64 %b)
+  %overflow = extractvalue { i64, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant0(i8 %a) {
+; CHECK-LABEL: @test_constant0(
+; CHECK-NEXT:    ret i1 false
+;
+  %res = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %a, i8 0)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant1(i8 %a) {
+; CHECK-LABEL: @test_constant1(
+; CHECK-NEXT:    [[TMP1:%.*]] = call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 -1)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[TMP1]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %a, i8 1)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant2(i8 %a) {
+; CHECK-LABEL: @test_constant2(
+; CHECK-NEXT:    [[TMP1:%.*]] = call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 -2)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[TMP1]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %a, i8 2)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant3(i8 %a) {
+; CHECK-LABEL: @test_constant3(
+; CHECK-NEXT:    [[TMP1:%.*]] = call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 -3)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[TMP1]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %a, i8 3)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant4(i8 %a) {
+; CHECK-LABEL: @test_constant4(
+; CHECK-NEXT:    [[TMP1:%.*]] = call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 -4)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[TMP1]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %a, i8 4)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+
+define i1 @test_constant127(i8 %a) {
+; CHECK-LABEL: @test_constant127(
+; CHECK-NEXT:    [[TMP1:%.*]] = call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 -127)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[TMP1]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %a, i8 127)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant128(i8 %a) {
+; CHECK-LABEL: @test_constant128(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 [[A:%.*]], i8 -128)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %a, i8 128)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant255(i8 %a) {
+; CHECK-LABEL: @test_constant255(
+; CHECK-NEXT:    [[TMP1:%.*]] = call { i8, i1 } @llvm.sadd.with.overflow.i8(i8 [[A:%.*]], i8 1)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[TMP1]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %a, i8 255)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
diff --git a/test/Transforms/InstCombine/umulo.ll b/test/Transforms/InstCombine/umulo.ll
index c854b8377ca..cce455e8428 100644
--- a/test/Transforms/InstCombine/umulo.ll
+++ b/test/Transforms/InstCombine/umulo.ll
@@ -55,6 +55,18 @@ define i1 @test_constant3(i8 %a) {
   ret i1 %overflow
 }
 
+define i1 @test_constant4(i8 %a) {
+; CHECK-LABEL: @test_constant4(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 [[A:%.*]], i8 4)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %a, i8 4)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+
 define i1 @test_constant127(i8 %a) {
 ; CHECK-LABEL: @test_constant127(
 ; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 [[A:%.*]], i8 127)
diff --git a/test/Transforms/InstCombine/usubo.ll b/test/Transforms/InstCombine/usubo.ll
new file mode 100644
index 00000000000..26f8cd2421d
--- /dev/null
+++ b/test/Transforms/InstCombine/usubo.ll
@@ -0,0 +1,104 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+declare { i64, i1 } @llvm.usub.with.overflow.i64(i64, i64)
+declare { i8, i1 } @llvm.usub.with.overflow.i8(i8, i8)
+
+define i1 @test_generic(i64 %a, i64 %b) {
+; CHECK-LABEL: @test_generic(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i64, i1 } @llvm.usub.with.overflow.i64(i64 [[A:%.*]], i64 [[B:%.*]])
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i64, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %a, i64 %b)
+  %overflow = extractvalue { i64, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant0(i8 %a) {
+; CHECK-LABEL: @test_constant0(
+; CHECK-NEXT:    ret i1 false
+;
+  %res = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %a, i8 0)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant1(i8 %a) {
+; CHECK-LABEL: @test_constant1(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 [[A:%.*]], i8 1)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %a, i8 1)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant2(i8 %a) {
+; CHECK-LABEL: @test_constant2(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 [[A:%.*]], i8 2)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %a, i8 2)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant3(i8 %a) {
+; CHECK-LABEL: @test_constant3(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 [[A:%.*]], i8 3)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %a, i8 3)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant4(i8 %a) {
+; CHECK-LABEL: @test_constant4(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 [[A:%.*]], i8 4)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %a, i8 4)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+
+define i1 @test_constant127(i8 %a) {
+; CHECK-LABEL: @test_constant127(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 [[A:%.*]], i8 127)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %a, i8 127)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant128(i8 %a) {
+; CHECK-LABEL: @test_constant128(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 [[A:%.*]], i8 -128)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %a, i8 128)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+
+define i1 @test_constant255(i8 %a) {
+; CHECK-LABEL: @test_constant255(
+; CHECK-NEXT:    [[RES:%.*]] = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 [[A:%.*]], i8 -1)
+; CHECK-NEXT:    [[OVERFLOW:%.*]] = extractvalue { i8, i1 } [[RES]], 1
+; CHECK-NEXT:    ret i1 [[OVERFLOW]]
+;
+  %res = tail call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %a, i8 255)
+  %overflow = extractvalue { i8, i1 } %res, 1
+  ret i1 %overflow
+}
+