39 lines
881 B
LLVM
39 lines
881 B
LLVM
; RUN: opt < %s -globalopt -S | FileCheck %s
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@G = internal global i32 17 ; <i32*> [#uses=3]
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; CHECK-NOT: @G
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define void @foo() {
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%V = load i32, i32* @G ; <i32> [#uses=1]
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store i32 %V, i32* @G
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ret void
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: ret void
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}
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define i32 @bar() {
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%X = load i32, i32* @G ; <i32> [#uses=1]
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ret i32 %X
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; CHECK-LABEL: @bar(
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; CHECK-NEXT: ret i32 17
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}
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@a = internal global i64* null, align 8
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; CHECK-NOT: @a
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; PR13968
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define void @qux() nounwind {
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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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; CHECK-LABEL: @qux(
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; CHECK-NOT: store
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; CHECK-NOT: load
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}
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