diff options
Diffstat (limited to 'llvm/test/Transforms/SafeStack/X86/dynamic-alloca.ll')
| -rw-r--r-- | llvm/test/Transforms/SafeStack/X86/dynamic-alloca.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SafeStack/X86/dynamic-alloca.ll b/llvm/test/Transforms/SafeStack/X86/dynamic-alloca.ll new file mode 100644 index 00000000000..b0571f72f1a --- /dev/null +++ b/llvm/test/Transforms/SafeStack/X86/dynamic-alloca.ll @@ -0,0 +1,22 @@ +; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s +; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s + +@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1 + +; Variable sized alloca +; safestack attribute +; Requires protector. +define void @foo(i32 %n) nounwind uwtable safestack { +entry: + ; CHECK: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr + %n.addr = alloca i32, align 4 + %a = alloca i32*, align 8 + store i32 %n, i32* %n.addr, align 4 + %0 = load i32, i32* %n.addr, align 4 + %conv = sext i32 %0 to i64 + %1 = alloca i8, i64 %conv + %2 = bitcast i8* %1 to i32* + store i32* %2, i32** %a, align 8 + ; CHECK: store i8* %[[SP:.*]], i8** @__safestack_unsafe_stack_ptr + ret void +} |
