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| author | Quentin Colombet <qcolombet@apple.com> | 2013-06-07 20:18:12 +0000 |
|---|---|---|
| committer | Quentin Colombet <qcolombet@apple.com> | 2013-06-07 20:18:12 +0000 |
| commit | 9a6b9bffa53bfa5e1a8373b31b2ddfa7b6bd7b30 (patch) | |
| tree | 97b9f14039b7304cb33af8c277d9772bd9569e8d /test | |
| parent | 8fc760cbe8d42e788f29b4a21537bc5e25d5ffa3 (diff) | |
| download | external_llvm-9a6b9bffa53bfa5e1a8373b31b2ddfa7b6bd7b30.zip external_llvm-9a6b9bffa53bfa5e1a8373b31b2ddfa7b6bd7b30.tar.gz external_llvm-9a6b9bffa53bfa5e1a8373b31b2ddfa7b6bd7b30.tar.bz2 | |
Add a backend option to warn on a given stack size limit.
Option: -mllvm -warn-stack-size=<limit>
Output (if limit is exceeded):
warning: Stack size limit exceeded (<actual size>) in <functionName>.
The longer term plan is to hook that to a clang warning.
PR:4072
<rdar://problem/13987214>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183552 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/warn-stack.ll | 24 | ||||
| -rw-r--r-- | test/CodeGen/X86/warn-stack.ll | 24 |
2 files changed, 48 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/warn-stack.ll b/test/CodeGen/ARM/warn-stack.ll new file mode 100644 index 0000000..4ddc846 --- /dev/null +++ b/test/CodeGen/ARM/warn-stack.ll @@ -0,0 +1,24 @@ +; RUN: llc -march arm -warn-stack-size=80 < %s 2>&1 >/dev/null | FileCheck %s +; Check the internal option that warns when the stack size exceeds the +; given amount. +; <rdar://13987214> + +; CHECK-NOT: nowarn +define void @nowarn() nounwind ssp { +entry: + %buffer = alloca [12 x i8], align 1 + %arraydecay = getelementptr inbounds [12 x i8]* %buffer, i64 0, i64 0 + call void @doit(i8* %arraydecay) nounwind + ret void +} + +; CHECK: warning: Stack size limit exceeded (92) in warn. +define void @warn() nounwind ssp { +entry: + %buffer = alloca [80 x i8], align 1 + %arraydecay = getelementptr inbounds [80 x i8]* %buffer, i64 0, i64 0 + call void @doit(i8* %arraydecay) nounwind + ret void +} + +declare void @doit(i8*) diff --git a/test/CodeGen/X86/warn-stack.ll b/test/CodeGen/X86/warn-stack.ll new file mode 100644 index 0000000..0a6a506 --- /dev/null +++ b/test/CodeGen/X86/warn-stack.ll @@ -0,0 +1,24 @@ +; RUN: llc -march x86 -warn-stack-size=80 < %s 2>&1 >/dev/null | FileCheck %s +; Check the internal option that warns when the stack size exceeds the +; given amount. +; <rdar://13987214> + +; CHECK-NOT: nowarn +define void @nowarn() nounwind ssp { +entry: + %buffer = alloca [12 x i8], align 1 + %arraydecay = getelementptr inbounds [12 x i8]* %buffer, i64 0, i64 0 + call void @doit(i8* %arraydecay) nounwind + ret void +} + +; CHECK: warning: Stack size limit exceeded (92) in warn. +define void @warn() nounwind ssp { +entry: + %buffer = alloca [80 x i8], align 1 + %arraydecay = getelementptr inbounds [80 x i8]* %buffer, i64 0, i64 0 + call void @doit(i8* %arraydecay) nounwind + ret void +} + +declare void @doit(i8*) |