--- /dev/null
+; RUN: llc < %s -mcpu=atom -march=x86 | FileCheck -check-prefix=atom %s
+; RUN: llc < %s -mcpu=core2 -march=x86 | FileCheck %s
+
+declare void @use_arr(i8*)
+declare void @many_params(i32, i32, i32, i32, i32, i32)
+
+define void @test1() nounwind {
+; atom: test1:
+; atom: leal -1052(%esp), %esp
+; atom-NOT: sub
+; atom: call
+; atom: leal 1052(%esp), %esp
+
+; CHECK: test1:
+; CHECK: subl
+; CHECK: call
+; CHECK-NOT: lea
+ %arr = alloca [1024 x i8], align 16
+ %arr_ptr = getelementptr inbounds [1024 x i8]* %arr, i8 0, i8 0
+ call void @use_arr(i8* %arr_ptr)
+ ret void
+}
+
+define void @test2() nounwind {
+; atom: test2:
+; atom: leal -28(%esp), %esp
+; atom: call
+; atom: leal 28(%esp), %esp
+
+; CHECK: test2:
+; CHECK-NOT: lea
+ call void @many_params(i32 1, i32 2, i32 3, i32 4, i32 5, i32 6)
+ ret void
+}
+
+define void @test3() nounwind {
+; atom: test3:
+; atom: leal -8(%esp), %esp
+; atom: leal 8(%esp), %esp
+
+; CHECK: test3:
+; CHECK-NOT: lea
+ %x = alloca i32, align 4
+ %y = alloca i32, align 4
+ store i32 0, i32* %x, align 4
+ ret void
+}
+