| ; Make sure MSan handles llvm.launder.invariant.group correctly. |
| |
| ; RUN: opt < %s -passes='module(msan),default<O1>' -msan-kernel=1 -S | FileCheck -check-prefixes=CHECK %s |
| ; RUN: opt < %s -passes='module(msan),default<O1>' -S | FileCheck -check-prefixes=CHECK %s |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| %class.Foo = type { ptr } |
| @flag = dso_local local_unnamed_addr global i8 0, align 1 |
| |
| define dso_local ptr @_Z1fv() local_unnamed_addr #0 { |
| entry: |
| %p = alloca ptr, align 8 |
| call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %p) |
| %0 = load i8, ptr @flag, align 1 |
| %tobool = icmp ne i8 %0, 0 |
| %call = call zeroext i1 @_Z2f1PPvb(ptr nonnull %p, i1 zeroext %tobool) |
| %1 = load ptr, ptr %p, align 8 |
| %2 = call ptr @llvm.launder.invariant.group.p0(ptr %1) |
| %retval.0 = select i1 %call, ptr %2, ptr null |
| call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %p) |
| ret ptr %retval.0 |
| } |
| |
| ; CHECK-NOT: call void @__msan_warning_with_origin_noreturn |
| |
| declare dso_local zeroext i1 @_Z2f1PPvb(ptr, i1 zeroext) local_unnamed_addr |
| |
| declare ptr @llvm.launder.invariant.group.p0(ptr) |
| |
| declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) |
| |
| declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) |
| |
| attributes #0 = { sanitize_memory uwtable } |
