1; RUN: llc -mtriple x86_64-apple-macosx10.8.0 < %s 2>&1 >/dev/null | FileCheck %s 2; Check the internal option that warns when the stack frame size exceeds the 3; given amount. 4; <rdar://13987214> 5 6; CHECK-NOT: nowarn 7define void @nowarn() nounwind ssp "warn-stack-size"="80" { 8entry: 9 %buffer = alloca [12 x i8], align 1 10 call void @doit(ptr %buffer) nounwind 11 ret void 12} 13 14; CHECK: warning: <unknown>:0:0: stack frame size ([[STCK:[0-9]+]]) exceeds limit (80) in function 'warn' 15define void @warn() nounwind ssp "warn-stack-size"="80" { 16entry: 17 %buffer = alloca [80 x i8], align 1 18 call void @doit(ptr %buffer) nounwind 19 ret void 20} 21 22; Ensure that warn-stack-size also considers the size of the unsafe stack. 23; With safestack enabled the machine stack size is well below 80, but the 24; combined stack size of the machine stack and unsafe stack will exceed the 25; warning threshold 26 27; CHECK: warning: <unknown>:0:0: stack frame size ([[STCK:[0-9]+]]) exceeds limit (80) in function 'warn_safestack' 28define i32 @warn_safestack() nounwind ssp safestack "warn-stack-size"="80" { 29entry: 30 %var = alloca i32, align 4 31 %buffer = alloca [80 x i8], align 1 32 call void @doit(ptr %buffer) nounwind 33 call void @doit(ptr %var) nounwind 34 %val = load i32, ptr %var 35 ret i32 %val 36} 37declare void @doit(ptr) 38