| ; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s |
| ; |
| ; Currently, MemorySSA doesn't support invariant groups. So, we should ignore |
| ; invariant.group.barrier intrinsics entirely. We'll need to pay attention to |
| ; them when/if we decide to support invariant groups. |
| |
| @g = external global i32 |
| |
| define i32 @foo(i32* %a) { |
| ; CHECK: 1 = MemoryDef(liveOnEntry) |
| ; CHECK-NEXT: store i32 0 |
| store i32 0, i32* %a, align 4, !llvm.invariant.group !0 |
| |
| ; CHECK: 2 = MemoryDef(1) |
| ; CHECK-NEXT: store i32 1 |
| store i32 1, i32* @g, align 4 |
| |
| %1 = bitcast i32* %a to i8* |
| %a8 = call i8* @llvm.invariant.group.barrier(i8* %1) |
| %a32 = bitcast i8* %a8 to i32* |
| |
| ; CHECK: MemoryUse(2) |
| ; CHECK-NEXT: %2 = load i32 |
| %2 = load i32, i32* %a32, align 4, !llvm.invariant.group !0 |
| ret i32 %2 |
| } |
| |
| declare i8* @llvm.invariant.group.barrier(i8*) |
| |
| !0 = !{!"group1"} |