diff options
Diffstat (limited to 'llvm/test/Transforms/SROA/phi-and-select.ll')
| -rw-r--r-- | llvm/test/Transforms/SROA/phi-and-select.ll | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/llvm/test/Transforms/SROA/phi-and-select.ll b/llvm/test/Transforms/SROA/phi-and-select.ll index b55d917f728..6f5833a772f 100644 --- a/llvm/test/Transforms/SROA/phi-and-select.ll +++ b/llvm/test/Transforms/SROA/phi-and-select.ll @@ -59,15 +59,24 @@ entry: %a = alloca [2 x i32] ; CHECK-NOT: alloca + ; Note that we build redundant GEPs here to ensure that having different GEPs + ; into the same alloca partation continues to work with PHI speculation. This + ; was the underlying cause of PR13926. %a0 = getelementptr [2 x i32]* %a, i64 0, i32 0 + %a0b = getelementptr [2 x i32]* %a, i64 0, i32 0 %a1 = getelementptr [2 x i32]* %a, i64 0, i32 1 + %a1b = getelementptr [2 x i32]* %a, i64 0, i32 1 store i32 0, i32* %a0 store i32 1, i32* %a1 ; CHECK-NOT: store switch i32 %x, label %bb0 [ i32 1, label %bb1 i32 2, label %bb2 - i32 3, label %bb3 ] + i32 3, label %bb3 + i32 4, label %bb4 + i32 5, label %bb5 + i32 6, label %bb6 + i32 7, label %bb7 ] bb0: br label %exit @@ -77,10 +86,19 @@ bb2: br label %exit bb3: br label %exit +bb4: + br label %exit +bb5: + br label %exit +bb6: + br label %exit +bb7: + br label %exit exit: - %phi = phi i32* [ %a1, %bb0 ], [ %a0, %bb1 ], [ %a0, %bb2 ], [ %a1, %bb3 ] -; CHECK: phi i32 [ 1, %{{.*}} ], [ 0, %{{.*}} ], [ 0, %{{.*}} ], [ 1, %{{.*}} ] + %phi = phi i32* [ %a1, %bb0 ], [ %a0, %bb1 ], [ %a0, %bb2 ], [ %a1, %bb3 ], + [ %a1b, %bb4 ], [ %a0b, %bb5 ], [ %a0b, %bb6 ], [ %a1b, %bb7 ] +; CHECK: phi i32 [ 1, %{{.*}} ], [ 0, %{{.*}} ], [ 0, %{{.*}} ], [ 1, %{{.*}} ], [ 1, %{{.*}} ], [ 0, %{{.*}} ], [ 0, %{{.*}} ], [ 1, %{{.*}} ] %result = load i32* %phi ret i32 %result |
