diff --git a/llvm/test/Transforms/InstCombine/icmp-equality-rotate.ll b/llvm/test/Transforms/InstCombine/icmp-equality-rotate.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/icmp-equality-rotate.ll
@@ -0,0 +1,102 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -passes=instcombine -S | FileCheck %s
+
+declare i8 @llvm.fshl.i8(i8, i8, i8)
+declare i8 @llvm.fshr.i8(i8, i8, i8)
+declare void @use.i8(i8)
+define i1 @cmpeq_rorr_to_rorl(i8 %x, i8 %C) {
+; CHECK-LABEL: @cmpeq_rorr_to_rorl(
+; CHECK-NEXT:    [[X_RORR:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C:%.*]])
+; CHECK-NEXT:    [[R:%.*]] = icmp eq i8 [[X_RORR]], [[X]]
+; CHECK-NEXT:    ret i1 [[R]]
+;
+  %x_rorr = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C)
+  %r = icmp eq i8 %x_rorr, %x
+  ret i1 %r
+}
+
+define i1 @cmpeq_rorr_to_rorl_fail_multiuse(i8 %x, i8 %C) {
+; CHECK-LABEL: @cmpeq_rorr_to_rorl_fail_multiuse(
+; CHECK-NEXT:    [[X_RORR:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C:%.*]])
+; CHECK-NEXT:    call void @use.i8(i8 [[X_RORR]])
+; CHECK-NEXT:    [[R:%.*]] = icmp eq i8 [[X_RORR]], [[X]]
+; CHECK-NEXT:    ret i1 [[R]]
+;
+  %x_rorr = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C)
+  call void @use.i8(i8 %x_rorr)
+  %r = icmp eq i8 %x_rorr, %x
+  ret i1 %r
+}
+
+define i1 @cmpne_rorr_rorr(i8 %x, i8 %C0, i8 %C1) {
+; CHECK-LABEL: @cmpne_rorr_rorr(
+; CHECK-NEXT:    [[X_RORR0:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C0:%.*]])
+; CHECK-NEXT:    [[X_RORR1:%.*]] = call i8 @llvm.fshr.i8(i8 [[X]], i8 [[X]], i8 [[C1:%.*]])
+; CHECK-NEXT:    [[R:%.*]] = icmp ne i8 [[X_RORR0]], [[X_RORR1]]
+; CHECK-NEXT:    ret i1 [[R]]
+;
+  %x_rorr0 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C0)
+  %x_rorr1 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C1)
+  %r = icmp ne i8 %x_rorr0, %x_rorr1
+  ret i1 %r
+}
+
+define i1 @cmpne_rorr_rorl_todo_mismatch_C(i8 %x, i8 %C0, i8 %C1) {
+; CHECK-LABEL: @cmpne_rorr_rorl_todo_mismatch_C(
+; CHECK-NEXT:    [[X_RORR0:%.*]] = call i8 @llvm.fshr.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C0:%.*]])
+; CHECK-NEXT:    [[X_RORL1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X]], i8 [[X]], i8 3)
+; CHECK-NEXT:    [[R:%.*]] = icmp ne i8 [[X_RORR0]], [[X_RORL1]]
+; CHECK-NEXT:    ret i1 [[R]]
+;
+  %x_rorr0 = call i8 @llvm.fshr.i8(i8 %x, i8 %x, i8 %C0)
+  %x_rorl1 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 3)
+  %r = icmp ne i8 %x_rorr0, %x_rorl1
+  ret i1 %r
+}
+
+define i1 @cmpne_rorl_rorl_multiuse1_fail(i8 %x, i8 %C0) {
+; CHECK-LABEL: @cmpne_rorl_rorl_multiuse1_fail(
+; CHECK-NEXT:    [[X_RORL0:%.*]] = call i8 @llvm.fshl.i8(i8 [[X:%.*]], i8 [[X]], i8 [[C0:%.*]])
+; CHECK-NEXT:    [[X_RORL1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X]], i8 [[X]], i8 3)
+; CHECK-NEXT:    call void @use.i8(i8 [[X_RORL1]])
+; CHECK-NEXT:    [[R:%.*]] = icmp ne i8 [[X_RORL0]], [[X_RORL1]]
+; CHECK-NEXT:    ret i1 [[R]]
+;
+  %x_rorl0 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 %C0)
+  %x_rorl1 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 3)
+  call void @use.i8(i8 %x_rorl1)
+  %r = icmp ne i8 %x_rorl0, %x_rorl1
+  ret i1 %r
+}
+
+define i1 @cmpeq_rorlC_rorlC_multiuse1(i8 %x, i8 %C0) {
+; CHECK-LABEL: @cmpeq_rorlC_rorlC_multiuse1(
+; CHECK-NEXT:    [[X_RORL0:%.*]] = call i8 @llvm.fshl.i8(i8 [[X:%.*]], i8 [[X]], i8 6)
+; CHECK-NEXT:    [[X_RORL1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X]], i8 [[X]], i8 3)
+; CHECK-NEXT:    call void @use.i8(i8 [[X_RORL1]])
+; CHECK-NEXT:    [[R:%.*]] = icmp eq i8 [[X_RORL0]], [[X_RORL1]]
+; CHECK-NEXT:    ret i1 [[R]]
+;
+  %x_rorl0 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 6)
+  %x_rorl1 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 3)
+  call void @use.i8(i8 %x_rorl1)
+  %r = icmp eq i8 %x_rorl0, %x_rorl1
+  ret i1 %r
+}
+
+define i1 @cmpeq_rorlC_rorlC_multiuse2_fail(i8 %x, i8 %C0) {
+; CHECK-LABEL: @cmpeq_rorlC_rorlC_multiuse2_fail(
+; CHECK-NEXT:    [[X_RORL0:%.*]] = call i8 @llvm.fshl.i8(i8 [[X:%.*]], i8 [[X]], i8 6)
+; CHECK-NEXT:    [[X_RORL1:%.*]] = call i8 @llvm.fshl.i8(i8 [[X]], i8 [[X]], i8 3)
+; CHECK-NEXT:    call void @use.i8(i8 [[X_RORL0]])
+; CHECK-NEXT:    call void @use.i8(i8 [[X_RORL1]])
+; CHECK-NEXT:    [[R:%.*]] = icmp eq i8 [[X_RORL0]], [[X_RORL1]]
+; CHECK-NEXT:    ret i1 [[R]]
+;
+  %x_rorl0 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 6)
+  %x_rorl1 = call i8 @llvm.fshl.i8(i8 %x, i8 %x, i8 3)
+  call void @use.i8(i8 %x_rorl0)
+  call void @use.i8(i8 %x_rorl1)
+  %r = icmp eq i8 %x_rorl0, %x_rorl1
+  ret i1 %r
+}