diff options
| -rw-r--r-- | llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp | 2 | ||||
| -rw-r--r-- | llvm/test/Transforms/LoopUnroll/X86/mmx.ll | 24 |
2 files changed, 25 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp index 919b45d3c7b..add5432aa27 100644 --- a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp +++ b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp @@ -86,7 +86,7 @@ static void ConnectProlog(Loop *L, Value *BECount, unsigned Count, if (L->contains(PN)) { NewPN->addIncoming(PN->getIncomingValueForBlock(NewPH), OrigPH); } else { - NewPN->addIncoming(Constant::getNullValue(PN->getType()), OrigPH); + NewPN->addIncoming(UndefValue::get(PN->getType()), OrigPH); } Value *V = PN->getIncomingValueForBlock(Latch); diff --git a/llvm/test/Transforms/LoopUnroll/X86/mmx.ll b/llvm/test/Transforms/LoopUnroll/X86/mmx.ll new file mode 100644 index 00000000000..2c4aa086e83 --- /dev/null +++ b/llvm/test/Transforms/LoopUnroll/X86/mmx.ll @@ -0,0 +1,24 @@ +; RUN: opt < %s -S -loop-unroll | FileCheck %s +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +define x86_mmx @f() #0 { +entry: + br label %for.body + +for.body: ; preds = %for.body, %entry + %phi = phi i32 [ 1, %entry ], [ %add, %for.body ] + %add = add i32 %phi, 1 + %cmp = icmp eq i32 %phi, 0 + br i1 %cmp, label %exit, label %for.body + +exit: ; preds = %for.body + %ret = phi x86_mmx [ undef, %for.body ] + ; CHECK: %[[ret_unr:.*]] = phi x86_mmx [ undef, + ; CHECK: %[[ret_ph:.*]] = phi x86_mmx [ undef, + ; CHECK: %[[ret:.*]] = phi x86_mmx [ %[[ret_unr]], {{.*}} ], [ %[[ret_ph]] + ; CHECK: ret x86_mmx %[[ret]] + ret x86_mmx %ret +} + +attributes #0 = { "target-cpu"="x86-64" } |
