early exit for dbg_value instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106430 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/Target/ARM/ARMConstantIslandPass.cpp b/lib/Target/ARM/ARMConstantIslandPass.cpp
index 3be6d1c821..401000277c 100644
--- a/lib/Target/ARM/ARMConstantIslandPass.cpp
+++ b/lib/Target/ARM/ARMConstantIslandPass.cpp
@@ -492,6 +492,8 @@ void ARMConstantIslands::InitialFunctionScan(MachineFunction &MF,
     unsigned MBBSize = 0;
     for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end();
          I != E; ++I) {
+      if (I->isDebugValue())
+        continue;
       // Add instruction size to MBBSize.
       MBBSize += TII->GetInstSizeInBytes(I);