+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
+
+define void @test_fxsave(i8* %ptr) {
+; CHECK-LABEL: test_fxsave
+; CHECK: fxsave
+ call void @llvm.x86.fxsave(i8* %ptr)
+ ret void;
+}
+declare void @llvm.x86.fxsave(i8*)
+
+define void @test_fxsave64(i8* %ptr) {
+; CHECK-LABEL: test_fxsave64
+; CHECK: fxsave64
+ call void @llvm.x86.fxsave64(i8* %ptr)
+ ret void;
+}
+declare void @llvm.x86.fxsave64(i8*)
+
+define void @test_fxrstor(i8* %ptr) {
+; CHECK-LABEL: test_fxrstor
+; CHECK: fxrstor
+ call void @llvm.x86.fxrstor(i8* %ptr)
+ ret void;
+}
+declare void @llvm.x86.fxrstor(i8*)
+
+define void @test_fxrstor64(i8* %ptr) {
+; CHECK-LABEL: test_fxrstor64
+; CHECK: fxrstor64
+ call void @llvm.x86.fxrstor64(i8* %ptr)
+ ret void;
+}
+declare void @llvm.x86.fxrstor64(i8*)