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llvm-mirror/test/Instrumentation/MemorySanitizer/attributes.ll
Evgenii Stepanov ecfa44e96f [msan] Remove more attributes from sanitized functions.
Summary:
MSan instrumentation adds stores and loads even to pure
readonly/writeonly functions. It is removing some of those attributes
from instrumented functions and call targets, but apparently not enough.

Remove writeonly, argmemonly and speculatable in addition to readonly /
readnone.

Reviewers: pcc, vitalybuka

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69541
2019-10-28 17:57:28 -07:00

48 lines
1.1 KiB
LLVM

; RUN: opt < %s -S -passes='module(msan-module),function(msan)' 2>&1 | FileCheck %s
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-S128"
target triple = "x86_64-unknown-linux-gnu"
declare void @a_() sanitize_memory readnone
declare void @b_() sanitize_memory readonly
declare void @c_() sanitize_memory writeonly
declare void @d_(i32* %p) sanitize_memory writeonly argmemonly
declare void @e_() sanitize_memory speculatable
define void @a() sanitize_memory readnone {
entry:
call void @a_()
ret void
}
define void @b() sanitize_memory readonly {
entry:
call void @b_()
ret void
}
define void @c() sanitize_memory writeonly {
entry:
call void @c_()
ret void
}
define void @d(i32* %p) sanitize_memory writeonly argmemonly {
entry:
call void @d_(i32* %p)
ret void
}
define void @e() sanitize_memory speculatable {
entry:
call void @e_()
ret void
}
; CHECK-NOT: readnone
; CHECK-NOT: readonly
; CHECK-NOT: writeonly
; CHECK-NOT: argmemonly
; CHECK-NOT: speculatable