Don't require BUNDLE headers in MachineInstr::getBundleSize().
It is possible to build MI bundles that don't begin with a BUNDLE
header. Add support for such bundles, counting all instructions inside
the bundle.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171985 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index a4d9813..53dbf03 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -982,18 +982,13 @@
return NULL;
}
-/// getBundleSize - Return the number of instructions inside the MI bundle.
+/// Return the number of instructions inside the MI bundle, not counting the
+/// header instruction.
unsigned MachineInstr::getBundleSize() const {
- assert(isBundle() && "Expecting a bundle");
-
- const MachineBasicBlock *MBB = getParent();
- MachineBasicBlock::const_instr_iterator I = *this, E = MBB->instr_end();
+ MachineBasicBlock::const_instr_iterator I = this;
unsigned Size = 0;
- while ((++I != E) && I->isInsideBundle()) {
- ++Size;
- }
- assert(Size > 1 && "Malformed bundle");
-
+ while (I->isBundledWithSucc())
+ ++Size, ++I;
return Size;
}