File: warn-stack.ll

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llvm-toolchain-13 1%3A13.0.1-6~deb11u1
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; RUN: llc -mtriple thumbv7-apple-ios3.0.0 < %s 2>&1 >/dev/null | FileCheck %s
; Check the internal option that warns when the stack frame size exceeds the
; given amount.
; <rdar://13987214>

; CHECK-NOT: nowarn
define void @nowarn() nounwind ssp "frame-pointer"="all" "warn-stack-size"="80" {
entry:
  %buffer = alloca [12 x i8], align 1
  %arraydecay = getelementptr inbounds [12 x i8], [12 x i8]* %buffer, i64 0, i64 0
  call void @doit(i8* %arraydecay) nounwind
  ret void
}

; CHECK: warning: stack frame size (92) exceeds limit (80) in function 'warn'
define void @warn() nounwind ssp "frame-pointer"="all" "warn-stack-size"="80" {
entry:
  %buffer = alloca [80 x i8], align 1
  %arraydecay = getelementptr inbounds [80 x i8], [80 x i8]* %buffer, i64 0, i64 0
  call void @doit(i8* %arraydecay) nounwind
  ret void
}

declare void @doit(i8*)