32 lines
766 B
LLVM
32 lines
766 B
LLVM
; RUN: opt -passes=globalopt -S < %s | FileCheck %s
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%sometype = type { ptr }
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@map = internal unnamed_addr global ptr null, align 8
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define void @Init() {
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; CHECK-LABEL: @Init(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store i1 true, ptr @map.init, align 1
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; CHECK-NEXT: ret void
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;
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entry:
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%call = tail call noalias nonnull dereferenceable(48) ptr @_Znwm(i64 48)
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store ptr %call, ptr @map, align 8
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ret void
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}
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define void @Usage() {
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; CHECK-LABEL: @Usage(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[MAP_INIT_VAL:%.*]] = load i1, ptr @map.init, align 1
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; CHECK-NEXT: [[NOTINIT:%.*]] = xor i1 [[MAP_INIT_VAL]], true
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; CHECK-NEXT: unreachable
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;
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entry:
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%0 = load ptr, ptr @map, align 8
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%.not = icmp eq ptr %0, null
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unreachable
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}
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declare ptr @_Znwm(i64)
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