Fold preceding / trailing base inc / dec into the single load / store as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72756 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
index 047552f..108c6dd 100644
--- a/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
+++ b/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
@@ -697,7 +697,7 @@
// LDM/STM ops.
for (unsigned i = 0, e = MBBII.size(); i < e; ++i)
if (mergeBaseUpdateLSMultiple(MBB, MBBII[i], Advance, MBBI))
- NumMerges++;
+ ++NumMerges;
NumMerges += MBBII.size();
// Try folding preceeding/trailing base inc/dec into those load/store
@@ -705,10 +705,17 @@
for (unsigned i = 0; i != NumMemOps; ++i)
if (!MemOps[i].Merged)
if (mergeBaseUpdateLoadStore(MBB, MemOps[i].MBBI, TII,Advance,MBBI))
- NumMerges++;
+ ++NumMerges;
// RS may be pointing to an instruction that's deleted.
RS->skipTo(prior(MBBI));
+ } else if (NumMemOps == 1) {
+ // Try folding preceeding/trailing base inc/dec into the single
+ // load/store.
+ if (mergeBaseUpdateLoadStore(MBB, MemOps[0].MBBI, TII, Advance, MBBI)) {
+ ++NumMerges;
+ RS->skipTo(prior(MBBI));
+ }
}
CurrBase = 0;