diff options
| -rw-r--r-- | lib/CodeGen/CodePlacementOpt.cpp | 6 | ||||
| -rw-r--r-- | test/CodeGen/ARM/2009-05-11-CodePlacementCrash.ll | 30 |
2 files changed, 33 insertions, 3 deletions
diff --git a/lib/CodeGen/CodePlacementOpt.cpp b/lib/CodeGen/CodePlacementOpt.cpp index 77d23eed6c..2e1d12d234 100644 --- a/lib/CodeGen/CodePlacementOpt.cpp +++ b/lib/CodeGen/CodePlacementOpt.cpp @@ -155,10 +155,10 @@ bool CodePlacementOpt::OptimizeIntraLoopEdges() { // A fallthrough. FtMBB = PredMBB; MachineLoop *PL = MLI->getLoopFor(PredMBB); - if (PL && (PL == L || PL->getLoopDepth() >= L->getLoopDepth())) { + if (PL && (PL == L || PL->getLoopDepth() >= L->getLoopDepth())) OkToMove = false; - break; - } + + break; } } diff --git a/test/CodeGen/ARM/2009-05-11-CodePlacementCrash.ll b/test/CodeGen/ARM/2009-05-11-CodePlacementCrash.ll new file mode 100644 index 0000000000..35d4306e9d --- /dev/null +++ b/test/CodeGen/ARM/2009-05-11-CodePlacementCrash.ll @@ -0,0 +1,30 @@ +; RUN: llvm-as < %s | llc -march=arm + %struct.List = type { %struct.List*, i32 } +@Node5 = external constant %struct.List ; <%struct.List*> [#uses=1] +@"\01LC" = external constant [7 x i8] ; <[7 x i8]*> [#uses=1] + +define i32 @main() nounwind { +entry: + br label %bb + +bb: ; preds = %bb3, %entry + %CurL.02 = phi %struct.List* [ @Node5, %entry ], [ %2, %bb3 ] ; <%struct.List*> [#uses=1] + %PrevL.01 = phi %struct.List* [ null, %entry ], [ %CurL.02, %bb3 ] ; <%struct.List*> [#uses=1] + %0 = icmp eq %struct.List* %PrevL.01, null ; <i1> [#uses=1] + br i1 %0, label %bb3, label %bb1 + +bb1: ; preds = %bb + br label %bb3 + +bb3: ; preds = %bb1, %bb + %iftmp.0.0 = phi i32 [ 0, %bb1 ], [ -1, %bb ] ; <i32> [#uses=1] + %1 = tail call i32 (i8*, ...)* @printf(i8* getelementptr ([7 x i8]* @"\01LC", i32 0, i32 0), i32 0, i32 %iftmp.0.0) nounwind ; <i32> [#uses=0] + %2 = load %struct.List** null, align 4 ; <%struct.List*> [#uses=2] + %phitmp = icmp eq %struct.List* %2, null ; <i1> [#uses=1] + br i1 %phitmp, label %bb5, label %bb + +bb5: ; preds = %bb3 + ret i32 0 +} + +declare i32 @printf(i8* nocapture, ...) nounwind |