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; RUN: llc < %s | FileCheck %s
target triple = "arm64-apple-macosx10"
; Check that big stacks are generated correctly.
; Currently, this is done by a sequence of sub instructions,
; which can encode immediate with a 12 bits mask an optionally
; shift left (up to 12). I.e., 16773120 is the biggest value.
; <rdar://12513931>
; CHECK-LABEL: foo:
; CHECK: sub sp, sp, #4095, lsl #12
; CHECK: sub sp, sp, #4095, lsl #12
; CHECK: sub sp, sp, #2, lsl #12
define void @foo() nounwind ssp {
entry:
%buffer = alloca [33554432 x i8], align 1
%arraydecay = getelementptr inbounds [33554432 x i8]* %buffer, i64 0, i64 0
call void @doit(i8* %arraydecay) nounwind
ret void
}
declare void @doit(i8*)
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