Changes in directory llvm/lib/Target/PowerPC:
PPCISelLowering.cpp updated: 1.223 -> 1.224
---
Log message:
ppc64 doesn't have lwau, don't attempt to form it.
---
Diffs of the changes: (+9 -3)
PPCISelLowering.cpp | 12 +++++++++---
1 files changed, 9 insertions(+), 3 deletions(-)
Index: llvm/lib/Target/PowerPC/PPCISelLowering.cpp
diff -u llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.223
llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.224
--- llvm/lib/Target/PowerPC/PPCISelLowering.cpp:1.223 Fri Nov 10 17:58:44 2006
+++ llvm/lib/Target/PowerPC/PPCISelLowering.cpp Fri Nov 10 18:08:42 2006
@@ -876,9 +876,6 @@
SDOperand Ptr;
if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
Ptr = LD->getBasePtr();
-
- // FIXME: PPC has no LWAU!
-
} else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
ST = ST;
//Ptr = ST->getBasePtr();
@@ -891,6 +888,15 @@
// TODO: Handle reg+reg.
if (!SelectAddressRegImm(Ptr, Offset, Base, DAG))
return false;
+
+ // PPC64 doesn't have lwau, but it does have lwaux. Reject preinc load of
+ // sext i32 to i64 when addr mode is r+i.
+ if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) {
+ if (LD->getValueType(0) == MVT::i64 && LD->getLoadedVT() == MVT::i32 &&
+ LD->getExtensionType() == ISD::SEXTLOAD &&
+ isa<ConstantSDNode>(Offset))
+ return false;
+ }
AM = ISD::PRE_INC;
return true;
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