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1; RUN: opt < %s -S -passes=msan 2>&1 | FileCheck %s2target 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"3target triple = "x86_64-unknown-linux-gnu"4 5 6; Test that MemorySanitizer correctly handles unreachable blocks.7 8define i32 @Func(ptr %p) nounwind uwtable {9entry:10 br label %exit11 12unreachable:13 %x = load i32, ptr %p14 br label %exit15 16exit:17 %z = phi i32 [ 42, %entry ], [ %x, %unreachable ]18 ret i32 %z19}20 21; CHECK-LABEL: @Func22; CHECK: store i32 0, {{.*}} @__msan_retval_tls23; CHECK: ret i32 4224 25 26define i32 @UnreachableLoop() nounwind uwtable {27entry:28 ret i32 029 30zzz:31 br label %xxx32 33xxx:34 br label %zzz35}36 37; CHECK-LABEL: @UnreachableLoop38; CHECK: store i32 0, {{.*}} @__msan_retval_tls39; CHECK: ret i32 040