| ; Test asan internal compiler flags: |
| ; -asan-instrument-dynamic-allocas |
| |
| ; RUN: opt < %s -asan -asan-module -asan-instrument-dynamic-allocas -S | FileCheck %s --check-prefix=CHECK-ALLOCA |
| 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" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define void @foo(i32 %len) sanitize_address { |
| entry: |
| ; CHECK-ALLOCA-LABEL: define void @foo |
| ; CHECK-ALLOCA: __asan_alloca_poison |
| ; CHECK-ALLOCA: __asan_allocas_unpoison |
| ; CHECK-ALLOCA: ret void |
| %0 = alloca i32, align 4 |
| %1 = alloca i8* |
| store volatile i32 %len, i32* %0, align 4 |
| %2 = load i32, i32* %0, align 4 |
| %3 = zext i32 %2 to i64 |
| %4 = alloca i8, i64 %3, align 32 |
| store volatile i8 0, i8* %4 |
| ret void |
| } |
| |
| ; Test that dynamic alloca is not used for inalloca variables. |
| define void @has_inalloca() uwtable sanitize_address { |
| ; CHECK-ALLOCA-LABEL: define void @has_inalloca |
| ; CHECK-ALLOCA-NOT: __asan_alloca_poison |
| ; CHECK-ALLOCA-NOT: __asan_alloca_unpoison |
| ; CHECK-ALLOCA: ret void |
| entry: |
| %t = alloca inalloca i32 |
| store i32 42, i32* %t |
| call void @pass_inalloca(i32* inalloca %t) |
| ret void |
| } |
| |
| declare void @pass_inalloca(i32* inalloca) |