+; RUN: llc %s -o - -verify-machineinstrs | FileCheck %s
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-unknown"
+
+@TheArray = external global [100000 x double], align 16
+
+; This test ensures, via the machine verifier, that the register class for the
+; index of the double store is correctly constrained to not include SP.
+
+; CHECK: movsd
+
+define i32 @main(i32* %i, double %tmpv) {
+bb:
+ br label %bb7
+
+bb7: ; preds = %bb7, %bb
+ %storemerge = phi i32 [ 0, %bb ], [ %tmp19, %bb7 ]
+ %tmp15 = zext i32 %storemerge to i64
+ %tmp16 = getelementptr inbounds [100000 x double], [100000 x double]* @TheArray, i64 0, i64 %tmp15
+ store double %tmpv, double* %tmp16, align 8
+ %tmp18 = load i32, i32* %i, align 4
+ %tmp19 = add i32 %tmp18, 1
+ br label %bb7
+}