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28990514f5
Summary: If there are any internal methods whose address was taken, conclude there is nothing known in relation of any other internal method and a global. Reviewers: nlopes, sanjoy.google Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69690
51 lines
1.5 KiB
LLVM
51 lines
1.5 KiB
LLVM
; RUN: opt -globals-aa -gvn -S < %s | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@deallocCalled = internal global i8 0, align 1
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define internal i8* @_i_Associated__dealloc() {
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entry:
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store i8 1, i8* @deallocCalled, align 1
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ret i8* null
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}
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; CHECK-LABEL: @main()
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define dso_local i32 @main() {
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entry:
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%tmp0 = call i8* @llvm.objc.autoreleasePoolPush() #1
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%tmp6 = load i8, i8* @deallocCalled, align 1
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%tobool = icmp ne i8 %tmp6, 0
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br i1 %tobool, label %if.else, label %if.end
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if.else: ; preds = %entry
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call void @__assert_fail() #0
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unreachable
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; CHECK-LABEL: if.end:
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; CHECK-NEXT: call void @llvm.objc.autoreleasePoolPop
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; CHECK-NOT: load i8, i8* @deallocCalled
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if.end: ; preds = %entry
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call void @llvm.objc.autoreleasePoolPop(i8* %tmp0)
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%tmp7 = load i8, i8* @deallocCalled, align 1
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%tobool3 = icmp ne i8 %tmp7, 0
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br i1 %tobool3, label %if.end6, label %if.else5
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if.else5: ; preds = %if.end
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call void @__assert_fail() #0
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unreachable
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if.end6: ; preds = %if.end
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store i8 0, i8* @deallocCalled, align 1
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ret i32 0
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}
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declare i8* @llvm.objc.autoreleasePoolPush() #1
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declare void @llvm.objc.autoreleasePoolPop(i8*) #1
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declare dso_local void @__assert_fail() #0
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attributes #0 = { noreturn nounwind }
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attributes #1 = { nounwind }
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