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1; A store or load cannot alias a global if the accessed amount is larger then2; the global.3 4; RUN: opt < %s -aa-pipeline=basic-aa -passes=gvn -S | FileCheck %s5target datalayout = "E-p:64:64:64-p1:16:16:16-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"6 7@B = global i16 88 9; CHECK-LABEL: @test1(10define i16 @test1(ptr %P) {11 %X = load i16, ptr @B12 store i32 7, ptr %P13 %Y = load i16, ptr @B14 %Z = sub i16 %Y, %X15 ret i16 %Z16; CHECK: ret i16 017}18 19@B_as1 = addrspace(1) global i16 820 21define i16 @test1_as1(ptr addrspace(1) %P) {22; CHECK-LABEL: @test1_as1(23; CHECK: ret i16 024 %X = load i16, ptr addrspace(1) @B_as125 store i32 7, ptr addrspace(1) %P26 %Y = load i16, ptr addrspace(1) @B_as127 %Z = sub i16 %Y, %X28 ret i16 %Z29}30 31; Cannot know anything about the size of this global.32; rdar://881341533@window = external global [0 x i8]34 35; CHECK-LABEL: @test2(36define i8 @test2(i32 %tmp79, i32 %w.2, i32 %indvar89) nounwind {37 %tmp92 = add i32 %tmp79, %indvar8938 %arrayidx412 = getelementptr [0 x i8], ptr @window, i32 0, i32 %tmp9239 %tmp93 = add i32 %w.2, %indvar8940 %arrayidx416 = getelementptr [0 x i8], ptr @window, i32 0, i32 %tmp9341 42 %A = load i8, ptr %arrayidx412, align 143 store i8 4, ptr %arrayidx416, align 144 45 %B = load i8, ptr %arrayidx412, align 146 %C = sub i8 %A, %B47 ret i8 %C48 49; CHECK: %B = load i850; CHECK: ret i8 %C51}52 53