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; RUN: llc -mtriple x86_64-apple-macosx10.8.0 < %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 "warn-stack-size"="80" {
entry:
%buffer = alloca [12 x i8], align 1
call void @doit(ptr %buffer) nounwind
ret void
}
; CHECK: warning: <unknown>:0:0: stack frame size ([[STCK:[0-9]+]]) exceeds limit (80) in function 'warn'
; CHECK: {{[0-9]+}}/[[STCK]] ({{.*}}%) spills, {{[0-9]+}}/[[STCK]] ({{.*}}%) variables
define void @warn() nounwind ssp "warn-stack-size"="80" {
entry:
%buffer = alloca [80 x i8], align 1
call void @doit(ptr %buffer) nounwind
ret void
}
; Ensure that warn-stack-size also considers the size of the unsafe stack.
; With safestack enabled the machine stack size is well below 80, but the
; combined stack size of the machine stack and unsafe stack will exceed the
; warning threshold
; CHECK: warning: <unknown>:0:0: stack frame size ([[STCK:[0-9]+]]) exceeds limit (80) in function 'warn_safestack'
; CHECK: {{[0-9]+}}/[[STCK]] ({{.*}}%) spills, {{[0-9]+}}/[[STCK]] ({{.*}}%) variables, {{[0-9]+}}/[[STCK]] ({{.*}}%) unsafe stack
define i32 @warn_safestack() nounwind ssp safestack "warn-stack-size"="80" {
entry:
%var = alloca i32, align 4
%buffer = alloca [80 x i8], align 1
call void @doit(ptr %buffer) nounwind
call void @doit(ptr %var) nounwind
%val = load i32, ptr %var
ret i32 %val
}
declare void @doit(ptr)
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