Handle dbg_value instructions (i.e., skip them) when generating IT blocks.
rdar://7797940
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105557 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/Thumb2ITBlockPass.cpp b/lib/Target/ARM/Thumb2ITBlockPass.cpp
index f36d4ef..065f657 100644
--- a/lib/Target/ARM/Thumb2ITBlockPass.cpp
+++ b/lib/Target/ARM/Thumb2ITBlockPass.cpp
@@ -71,8 +71,10 @@
unsigned Mask = 0, Pos = 3;
// Branches, including tricky ones like LDM_RET, need to end an IT
// block so check the instruction we just put in the block.
- while (MBBI != E && Pos &&
- (!MI->getDesc().isBranch() && !MI->getDesc().isReturn())) {
+ for (; MBBI != E && Pos &&
+ (!MI->getDesc().isBranch() && !MI->getDesc().isReturn()) ; ++MBBI) {
+ if (MBBI->isDebugValue())
+ continue;
MachineInstr *NMI = &*MBBI;
MI = NMI;
DebugLoc ndl = NMI->getDebugLoc();
@@ -83,7 +85,6 @@
else
break;
--Pos;
- ++MBBI;
}
Mask |= (1 << Pos);
// Tag along (firstcond[0] << 4) with the mask.