| ; 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*) |
