[llvm-commits] [llvm] r131705 - /llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
Cameron Zwarich
zwarich at apple.com
Thu May 19 16:44:34 PDT 2011
Author: zwarich
Date: Thu May 19 18:44:34 2011
New Revision: 131705
URL: http://llvm.org/viewvc/llvm-project?rev=131705&view=rev
Log:
Fix PR9955 by only attaching load memory operands to load instructions and
similarly for stores. Now "make check" passes with the MachineVerifier forced
on with the VerifyCoalescing option!
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=131705&r1=131704&r2=131705&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Thu May 19 18:44:34 2011
@@ -2650,11 +2650,45 @@
// instructions that access memory and for ComplexPatterns that match
// loads.
if (EmitNodeInfo & OPFL_MemRefs) {
+ // Only attach load or store memory operands if the generated
+ // instruction may load or store.
+ const TargetInstrDesc &TID = TM.getInstrInfo()->get(TargetOpc);
+ bool mayLoad = TID.mayLoad();
+ bool mayStore = TID.mayStore();
+
+ unsigned NumMemRefs = 0;
+ for (SmallVector<MachineMemOperand*, 2>::const_iterator I =
+ MatchedMemRefs.begin(), E = MatchedMemRefs.end(); I != E; ++I) {
+ if ((*I)->isLoad()) {
+ if (mayLoad)
+ ++NumMemRefs;
+ } else if ((*I)->isStore()) {
+ if (mayStore)
+ ++NumMemRefs;
+ } else {
+ ++NumMemRefs;
+ }
+ }
+
MachineSDNode::mmo_iterator MemRefs =
- MF->allocateMemRefsArray(MatchedMemRefs.size());
- std::copy(MatchedMemRefs.begin(), MatchedMemRefs.end(), MemRefs);
+ MF->allocateMemRefsArray(NumMemRefs);
+
+ MachineSDNode::mmo_iterator MemRefsPos = MemRefs;
+ for (SmallVector<MachineMemOperand*, 2>::const_iterator I =
+ MatchedMemRefs.begin(), E = MatchedMemRefs.end(); I != E; ++I) {
+ if ((*I)->isLoad()) {
+ if (mayLoad)
+ *MemRefsPos++ = *I;
+ } else if ((*I)->isStore()) {
+ if (mayStore)
+ *MemRefsPos++ = *I;
+ } else {
+ *MemRefsPos++ = *I;
+ }
+ }
+
cast<MachineSDNode>(Res)
- ->setMemRefs(MemRefs, MemRefs + MatchedMemRefs.size());
+ ->setMemRefs(MemRefs, MemRefs + NumMemRefs);
}
DEBUG(errs() << " "
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