| Yury Gribov | 55441bb | 2014-11-21 10:29:50 +0000 | [diff] [blame] | 1 | ; Test asan internal compiler flags: |
| Vitaly Buka | 5b4f121 | 2016-08-20 17:22:27 +0000 | [diff] [blame] | 2 | ; -asan-instrument-dynamic-allocas |
| Yury Gribov | 55441bb | 2014-11-21 10:29:50 +0000 | [diff] [blame] | 3 | |
| Vitaly Buka | 5b4f121 | 2016-08-20 17:22:27 +0000 | [diff] [blame] | 4 | ; RUN: opt < %s -asan -asan-module -asan-instrument-dynamic-allocas -S | FileCheck %s --check-prefix=CHECK-ALLOCA |
| Yury Gribov | 55441bb | 2014-11-21 10:29:50 +0000 | [diff] [blame] | 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" |
| 7 | |
| 8 | define void @foo(i32 %len) sanitize_address { |
| 9 | entry: |
| Alexey Samsonov | 55fda1b | 2015-11-05 21:18:41 +0000 | [diff] [blame] | 10 | ; CHECK-ALLOCA-LABEL: define void @foo |
| Yury Gribov | 98b1859 | 2015-05-28 07:51:49 +0000 | [diff] [blame] | 11 | ; CHECK-ALLOCA: __asan_alloca_poison |
| 12 | ; CHECK-ALLOCA: __asan_allocas_unpoison |
| Alexey Samsonov | 55fda1b | 2015-11-05 21:18:41 +0000 | [diff] [blame] | 13 | ; CHECK-ALLOCA: ret void |
| Yury Gribov | 55441bb | 2014-11-21 10:29:50 +0000 | [diff] [blame] | 14 | %0 = alloca i32, align 4 |
| 15 | %1 = alloca i8* |
| Anna Zaks | 8ed1d81 | 2015-02-27 03:12:36 +0000 | [diff] [blame] | 16 | store volatile i32 %len, i32* %0, align 4 |
| David Blaikie | a79ac14 | 2015-02-27 21:17:42 +0000 | [diff] [blame] | 17 | %2 = load i32, i32* %0, align 4 |
| Yury Gribov | 55441bb | 2014-11-21 10:29:50 +0000 | [diff] [blame] | 18 | %3 = zext i32 %2 to i64 |
| 19 | %4 = alloca i8, i64 %3, align 32 |
| Anna Zaks | 8ed1d81 | 2015-02-27 03:12:36 +0000 | [diff] [blame] | 20 | store volatile i8 0, i8* %4 |
| Yury Gribov | 55441bb | 2014-11-21 10:29:50 +0000 | [diff] [blame] | 21 | ret void |
| 22 | } |
| 23 | |
| Alexey Samsonov | 55fda1b | 2015-11-05 21:18:41 +0000 | [diff] [blame] | 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 |
| 30 | entry: |
| 31 | %t = alloca inalloca i32 |
| 32 | store i32 42, i32* %t |
| 33 | call void @pass_inalloca(i32* inalloca %t) |
| 34 | ret void |
| 35 | } |
| 36 | |
| 37 | declare void @pass_inalloca(i32* inalloca) |