22 lines
713 B
LLVM
22 lines
713 B
LLVM
|
; 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], [33554432 x i8]* %buffer, i64 0, i64 0
|
||
|
|
call void @doit(i8* %arraydecay) nounwind
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @doit(i8*)
|