xref: /llvm-project/llvm/test/Transforms/Sink/badloadsink.ll (revision a198d2041e8a5c9520d3df59887ca3c744b15d82)
1; RUN: opt < %s -passes=sink -S | FileCheck %s
2declare void @foo(ptr)
3declare ptr @llvm.load.relative.i32(ptr %ptr, i32 %offset) argmemonly nounwind readonly
4define i64 @sinkload(i1 %cmp, ptr %ptr, i32 %off) {
5; CHECK-LABEL: @sinkload
6top:
7    %a = alloca i64
8; CHECK: call void @foo(ptr %a)
9; CHECK-NEXT: %x = load i64, ptr %a
10; CHECK-NEXT: %y = call ptr @llvm.load.relative.i32(ptr %ptr, i32 %off)
11    call void @foo(ptr %a)
12    %x = load i64, ptr %a
13    %y = call ptr @llvm.load.relative.i32(ptr %ptr, i32 %off)
14    br i1 %cmp, label %A, label %B
15A:
16    store i64 0, ptr %a
17    store i8 0, ptr %ptr
18    br label %B
19B:
20; CHECK-NOT: load i64, ptr %a
21; CHECK-NOT: call ptr @llvm.load.relative(ptr %ptr, i32 off)
22    %y2 = ptrtoint ptr %y to i64
23    %retval = add i64 %y2, %x
24    ret i64 %retval
25}
26
27