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[hwasan] add musttail IR test. 

we currently only have a test at the clang level

Reviewed By: morehouse

Differential Revision: https://reviews.llvm.org/D118856
This commit is contained in:
Florian Mayer 2022-02-02 15:44:41 -08:00
parent 79b98f0a07
commit 54d2e6a121
1 changed files with 30 additions and 0 deletions
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30
llvm/test/Instrumentation/HWAddressSanitizer/musttail.ll Normal file
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; Regression test for a compiler bug that caused a crash when instrumenting code
; using musttail.
; RUN: opt -S -passes=hwasan -hwasan-use-stack-safety=0 %s -o - | FileCheck %s
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-arm-unknown-eabi"
define dso_local noundef i32 @_Z3bari(i32 noundef %0) sanitize_hwaddress {
%2 = alloca i32, align 4
store i32 %0, i32* %2, align 4
%3 = load i32, i32* %2, align 4
ret i32 %3
}
define dso_local noundef i32 @_Z3fooi(i32 noundef %0) sanitize_hwaddress {
%2 = alloca i32, align 4
%3 = alloca i32, align 4
store i32 %0, i32* %2, align 4
store volatile i32 5, i32* %3, align 4
%4 = load i32, i32* %2, align 4
%5 = load volatile i32, i32* %3, align 4
%6 = add nsw i32 %4, %5
; Check we untag before the musttail.
; CHECK: call void @llvm.memset.p0i8.i64
; CHECK: musttail call
; CHECK-NOT: call void @llvm.memset.p0i8.i64
%7 = musttail call noundef i32 @_Z3bari(i32 noundef %6)
ret i32 %7
}