1 ; Test asan internal compiler flags:
2 ; -asan-instrument-dynamic-allocas
4 ; RUN: opt < %s -passes=asan -asan-instrument-dynamic-allocas -S | FileCheck %s --check-prefix=CHECK-ALLOCA
5 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
6 target triple = "x86_64-unknown-linux-gnu"
8 define void @foo(i32 %len) sanitize_address {
10 ; CHECK-ALLOCA-LABEL: define void @foo
11 ; CHECK-ALLOCA: __asan_alloca_poison
12 ; CHECK-ALLOCA: __asan_allocas_unpoison
13 ; CHECK-ALLOCA: ret void
14 %0 = alloca i32, align 4
16 store volatile i32 %len, ptr %0, align 4
17 %2 = load i32, ptr %0, align 4
18 %3 = zext i32 %2 to i64
19 %4 = alloca i8, i64 %3, align 32
20 store volatile i8 0, ptr %4
24 ; Test that dynamic alloca is not used for inalloca variables.
25 define void @has_inalloca() uwtable sanitize_address {
26 ; CHECK-ALLOCA-LABEL: define void @has_inalloca
27 ; CHECK-ALLOCA-NOT: __asan_alloca_poison
28 ; CHECK-ALLOCA-NOT: __asan_alloca_unpoison
29 ; CHECK-ALLOCA: ret void
31 %t = alloca inalloca i32
33 call void @pass_inalloca(ptr inalloca(i32) %t)
37 declare void @pass_inalloca(ptr inalloca(i32))