--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s
+
+define i8 @sdiv_neg_neg_high_bits(i8 %x, i8 %y) {
+; CHECK-LABEL: sdiv_neg_neg_high_bits:
+; CHECK: # %bb.0:
+; CHECK-NEXT: orb $-128, %dil
+; CHECK-NEXT: orb $-125, %sil
+; CHECK-NEXT: movsbl %dil, %eax
+; CHECK-NEXT: idivb %sil
+; CHECK-NEXT: andb $-128, %al
+; CHECK-NEXT: retq
+ %num = or i8 %x, 128
+ %denum = or i8 %y, 131
+ %div = sdiv i8 %num, %denum
+ %r = and i8 %div, 128
+ ret i8 %r
+}
+
+define i8 @sdiv_exact_odd_odd(i8 %x, i8 %y) {
+; CHECK-LABEL: sdiv_exact_odd_odd:
+; CHECK: # %bb.0:
+; CHECK-NEXT: orb $1, %dil
+; CHECK-NEXT: orb $1, %sil
+; CHECK-NEXT: movsbl %dil, %eax
+; CHECK-NEXT: idivb %sil
+; CHECK-NEXT: andb $1, %al
+; CHECK-NEXT: retq
+ %num = or i8 %x, 1
+ %denum = or i8 %y, 1
+ %div = sdiv exact i8 %num, %denum
+ %r = and i8 %div, 1
+ ret i8 %r
+}
+
+define i8 @sdiv_exact_even_even_fail_unknown(i8 %x, i8 %y) {
+; CHECK-LABEL: sdiv_exact_even_even_fail_unknown:
+; CHECK: # %bb.0:
+; CHECK-NEXT: andb $-2, %dil
+; CHECK-NEXT: andb $-2, %sil
+; CHECK-NEXT: movsbl %dil, %eax
+; CHECK-NEXT: idivb %sil
+; CHECK-NEXT: andb $1, %al
+; CHECK-NEXT: retq
+ %num = and i8 %x, -2
+ %denum = and i8 %y, -2
+ %div = sdiv exact i8 %num, %denum
+ %r = and i8 %div, 1
+ ret i8 %r
+}
+
+define i8 @udiv_exact_even_odd(i8 %x, i8 %y) {
+; CHECK-LABEL: udiv_exact_even_odd:
+; CHECK: # %bb.0:
+; CHECK-NEXT: andb $-2, %dil
+; CHECK-NEXT: orb $1, %sil
+; CHECK-NEXT: movzbl %dil, %eax
+; CHECK-NEXT: divb %sil
+; CHECK-NEXT: andb $1, %al
+; CHECK-NEXT: retq
+ %num = and i8 %x, -2
+ %denum = or i8 %y, 1
+ %div = udiv exact i8 %num, %denum
+ %r = and i8 %div, 1
+ ret i8 %r
+}
+
+define i8 @udiv_exact_even_even_fail_unknown(i8 %x, i8 %y) {
+; CHECK-LABEL: udiv_exact_even_even_fail_unknown:
+; CHECK: # %bb.0:
+; CHECK-NEXT: andb $-2, %dil
+; CHECK-NEXT: andb $-2, %sil
+; CHECK-NEXT: movzbl %dil, %eax
+; CHECK-NEXT: divb %sil
+; CHECK-NEXT: andb $1, %al
+; CHECK-NEXT: retq
+ %num = and i8 %x, -2
+ %denum = and i8 %y, -2
+ %div = udiv exact i8 %num, %denum
+ %r = and i8 %div, 1
+ ret i8 %r
+}