2019-04-17 12:52:47 +08:00
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; RUN: opt < %s -globalopt -S | FileCheck %s
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@a = internal global i64* null, align 8
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; CHECK: @a
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; PR13968
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define void @qux_no_null_opt() nounwind #0 {
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; CHECK-LABEL: @qux_no_null_opt(
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; CHECK: getelementptr i64*, i64** @a, i32 1
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; CHECK: store i64* inttoptr (i64 1 to i64*), i64** @a
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%b = bitcast i64** @a to i8*
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%g = getelementptr i64*, i64** @a, i32 1
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%cmp = icmp ne i8* null, %b
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%cmp2 = icmp eq i8* null, %b
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%cmp3 = icmp eq i64** null, %g
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store i64* inttoptr (i64 1 to i64*), i64** @a, align 8
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%l = load i64*, i64** @a, align 8
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ret void
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}
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define i64* @bar() {
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%X = load i64*, i64** @a, align 8
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ret i64* %X
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; CHECK-LABEL: @bar(
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; CHECK: load
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}
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2020-04-25 18:57:07 +08:00
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attributes #0 = { null_pointer_is_valid }
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