1; RUN: opt -passes=globalopt < %s -S -o - | FileCheck %s
2
3; When simplifying users of a global variable, the pass could incorrectly
4; return false if there were still some uses left, and no further optimizations
5; was done. This was caught by the pass return status check that is hidden
6; under EXPENSIVE_CHECKS.
7
8; CHECK: @src = internal unnamed_addr constant
9
10; CHECK: entry:
11; CHECK-NEXT: %call = call i32 @f(i32 0)
12; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 bitcast (i32* @dst to i8*), i8* align 4 bitcast ([1 x i32]* @src to i8*), i64 1, i1 false)
13; CHECK-NEXT: ret void
14
15@src = internal unnamed_addr global [1 x i32] zeroinitializer, align 4
16@dst = external dso_local local_unnamed_addr global i32, align 4
17
18define dso_local void @d() local_unnamed_addr {
19entry:
20  %0 = load i32, i32* getelementptr inbounds ([1 x i32], [1 x i32]* @src, i64 0, i64 0), align 4
21  %call = call i32 @f(i32 %0)
22  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 bitcast (i32* @dst to i8*), i8* align 4 bitcast ([1 x i32]* @src to i8*), i64 1, i1 false)
23  ret void
24}
25
26declare dso_local i32 @f(i32) local_unnamed_addr
27
28declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg)
29