1 ; Test asan internal compiler flags: 2 ; -asan-instrument-dynamic-allocas 3 4 ; RUN: opt < %s -asan -asan-module -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" 7 8 define void @foo(i32 %len) sanitize_address { 9 entry: 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 15 %1 = alloca i8* 16 store volatile i32 %len, i32* %0, align 4 17 %2 = load i32, i32* %0, align 4 18 %3 = zext i32 %2 to i64 19 %4 = alloca i8, i64 %3, align 32 20 store volatile i8 0, i8* %4 21 ret void 22 } 23 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) 38
