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