--- /dev/null
+; RUN: llvm-as < %s | llc
+
+; Test that we can have an "X" output constraint.
+
+define void @test(i16 * %t) {
+ call void asm sideeffect "fwait", "=*X,~{dirflag},~{fpsr},~{flags},~{memory}"( i16* %t )
+ ret void
+}
--- /dev/null
+; RUN: llvm-as < %s | llc
+
+ %struct..0anon = type { [100 x i32] }
+
+define void @test() {
+entry:
+ %currfpu = alloca %struct..0anon, align 16 ; <%struct..0anon*> [#uses=2]
+ %mxcsr = alloca %struct..0anon, align 16 ; <%struct..0anon*> [#uses=1]
+ call void asm sideeffect "fnstenv $0", "=*m,~{dirflag},~{fpsr},~{flags}"( %struct..0anon* %currfpu )
+ call void asm sideeffect "$0 $1", "=*m,*m,~{dirflag},~{fpsr},~{flags}"( %struct..0anon* %mxcsr, %struct..0anon* %currfpu )
+ ret void
+}
+