39 lines
1.4 KiB
LLVM
39 lines
1.4 KiB
LLVM
|
; Test asan internal compiler flags:
|
||
|
|
; -asan-instrument-dynamic-allocas
|
||
|
|
|
||
|
|
; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-instrument-dynamic-allocas -S | FileCheck %s --check-prefix=CHECK-ALLOCA
|
||
|
|
; RUN: opt < %s -passes='asan-pipeline' -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)
|