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Diffstat (limited to 'test/Transforms/SafeStack/setjmp2.ll')
-rw-r--r-- | test/Transforms/SafeStack/setjmp2.ll | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/test/Transforms/SafeStack/setjmp2.ll b/test/Transforms/SafeStack/setjmp2.ll new file mode 100644 index 000000000000..65fd920d63da --- /dev/null +++ b/test/Transforms/SafeStack/setjmp2.ll @@ -0,0 +1,42 @@ +; 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 + +%struct.__jmp_buf_tag = type { [8 x i64], i32, %struct.__sigset_t } +%struct.__sigset_t = type { [16 x i64] } + +@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1 +@buf = internal global [1 x %struct.__jmp_buf_tag] zeroinitializer, align 16 + +; setjmp/longjmp test with dynamically sized array. +; Requires protector. +; CHECK: @foo(i32 %[[ARG:.*]]) +define i32 @foo(i32 %size) nounwind uwtable safestack { +entry: + ; CHECK: %[[DYNPTR:.*]] = alloca i8* + ; CHECK-NEXT: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr + ; CHECK-NEXT: store i8* %[[SP]], i8** %[[DYNPTR]] + + ; CHECK-NEXT: %[[ZEXT:.*]] = zext i32 %[[ARG]] to i64 + ; CHECK-NEXT: %[[MUL:.*]] = mul i64 %[[ZEXT]], 4 + ; CHECK-NEXT: %[[SP2:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr + ; CHECK-NEXT: %[[PTRTOINT:.*]] = ptrtoint i8* %[[SP2]] to i64 + ; CHECK-NEXT: %[[SUB:.*]] = sub i64 %[[PTRTOINT]], %[[MUL]] + ; CHECK-NEXT: %[[AND:.*]] = and i64 %[[SUB]], -16 + ; CHECK-NEXT: %[[INTTOPTR:.*]] = inttoptr i64 %[[AND]] to i8* + ; CHECK-NEXT: store i8* %[[INTTOPTR]], i8** @__safestack_unsafe_stack_ptr + ; CHECK-NEXT: store i8* %[[INTTOPTR]], i8** %unsafe_stack_dynamic_ptr + ; CHECK-NEXT: %[[ALLOCA:.*]] = inttoptr i64 %[[SUB]] to i32* + %a = alloca i32, i32 %size + + ; CHECK: setjmp + ; CHECK-NEXT: %[[LOAD:.*]] = load i8*, i8** %[[DYNPTR]] + ; CHECK-NEXT: store i8* %[[LOAD]], i8** @__safestack_unsafe_stack_ptr + %call = call i32 @_setjmp(%struct.__jmp_buf_tag* getelementptr inbounds ([1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* @buf, i32 0, i32 0)) returns_twice + + ; CHECK: call void @funcall(i32* %[[ALLOCA]]) + call void @funcall(i32* %a) + ret i32 0 +} + +declare i32 @_setjmp(%struct.__jmp_buf_tag*) +declare void @funcall(i32*) |