55 lines · plain
1; RUN: opt < %s -aa-pipeline=globals-aa -passes='require<globals-aa>,gvn' -S | FileCheck %s2 3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"4 5@a = internal global ptr null, align 86@b = global ptr @a, align 87@c = global ptr @a, align 88@d = common global i32 0, align 49 10; Make sure we globals-aa doesn't get confused and allow hoisting11; the load from @a out of the loop.12 13; CHECK-LABEL: define i32 @main()14; CHECK: for.body:15; CHECK-NEXT: %2 = load ptr, ptr @b, align 816; CHECK-NEXT: store ptr @d, ptr %2, align 817; CHECK-NEXT: %3 = load ptr, ptr @a, align 818; CHECK-NEXT: %cmp1 = icmp ne ptr %3, @d19; CHECK-NEXT: br i1 %cmp1, label %if.then, label %if.end20 21define i32 @main() {22entry:23 %0 = load i32, ptr @d, align 424 br label %for.cond25 26for.cond: ; preds = %if.end, %entry27 %1 = phi i32 [ %inc, %if.end ], [ %0, %entry ]28 %cmp = icmp slt i32 %1, 129 br i1 %cmp, label %for.body, label %for.end30 31for.body: ; preds = %for.cond32 %2 = load ptr, ptr @b, align 833 store ptr @d, ptr %2, align 834 %3 = load ptr, ptr @a, align 835 %cmp1 = icmp ne ptr %3, @d36 br i1 %cmp1, label %if.then, label %if.end37 38if.then: ; preds = %for.body39 br label %return40 41if.end: ; preds = %for.body42 %4 = load i32, ptr @d, align 443 %inc = add nsw i32 %4, 144 store i32 %inc, ptr @d, align 445 br label %for.cond46 47for.end: ; preds = %for.cond48 br label %return49 50return: ; preds = %for.end, %if.then51 %retval.0 = phi i32 [ 1, %if.then ], [ 0, %for.end ]52 ret i32 %retval.053}54 55