| ; 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: stack frame size (88) exceeds limit (80) in function 'warn' |
| 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: stack frame size (120) exceeds limit (80) in function 'warn_safestack' |
| define void @warn_safestack() nounwind ssp safestack "warn-stack-size"="80" { |
| entry: |
| %buffer = alloca [80 x i8], align 1 |
| call void @doit(ptr %buffer) nounwind |
| ret void |
| } |
| declare void @doit(ptr) |