31 lines
840 B
LLVM
31 lines
840 B
LLVM
; Regression test for msan not invalidating GlobalsAA.
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; RUN: opt < %s -S -passes='require<globals-aa>,module(msan),require<globals-aa>,early-cse<memssa>' 2>&1 | FileCheck %s
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target triple = "x86_64-unknown-linux"
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define ptr @foo(ptr %p) local_unnamed_addr sanitize_memory {
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entry:
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ret ptr %p
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}
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define i32 @test() local_unnamed_addr sanitize_memory {
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entry:
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; CHECK-LABEL: define i32 @test()
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%x = alloca i32
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store i32 7, ptr %x
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; CHECK: store i64 0, ptr @__msan_retval_tls
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; CHECK-NEXT: call ptr @foo(
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%call = call ptr @foo(ptr %x)
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; If GlobalsAA is eliminated correctly, early-cse should not remove next load.
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; CHECK-NEXT: %[[MSRET:.*]] = load i64, ptr @__msan_retval_tls
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; CHECK-NEXT: %[[MSCMP:.*]] = icmp ne i64 %[[MSRET]], 0
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; CHECK-NEXT: br i1 %[[MSCMP]],
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%ret = load i32, ptr %call
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ret i32 %ret
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}
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