Changes in directory llvm/lib/Analysis:
ScalarEvolution.cpp updated: 1.119 -> 1.120
---
Log message:
In SCEVAddExpr::get, skip over any cast operands before looking for nested
add operands after constant operands. The recent change to recognize
sign-extend expressions caused this to be exposed more often.
---
Diffs of the changes: (+5 -2)
ScalarEvolution.cpp | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
Index: llvm/lib/Analysis/ScalarEvolution.cpp
diff -u llvm/lib/Analysis/ScalarEvolution.cpp:1.119
llvm/lib/Analysis/ScalarEvolution.cpp:1.120
--- llvm/lib/Analysis/ScalarEvolution.cpp:1.119 Fri Jun 15 09:38:12 2007
+++ llvm/lib/Analysis/ScalarEvolution.cpp Mon Jun 18 14:30:09 2007
@@ -685,8 +685,11 @@
return SCEVAddExpr::get(Ops);
}
- // Okay, now we know the first non-constant operand. If there are add
- // operands they would be next.
+ // Now we know the first non-constant operand. Skip past any cast SCEVs.
+ while (Idx < Ops.size() && Ops[Idx]->getSCEVType() < scAddExpr)
+ ++Idx;
+
+ // If there are add operands they would be next.
if (Idx < Ops.size()) {
bool DeletedAdd = false;
while (SCEVAddExpr *Add = dyn_cast<SCEVAddExpr>(Ops[Idx])) {
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