PR7774: Fix undefined shifts in Alpha backend. As a bonus, this actually
improves the generated code in some cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109985 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaISelDAGToDAG.cpp b/lib/Target/Alpha/AlphaISelDAGToDAG.cpp
index d526dc0..d197bd1 100644
--- a/lib/Target/Alpha/AlphaISelDAGToDAG.cpp
+++ b/lib/Target/Alpha/AlphaISelDAGToDAG.cpp
@@ -113,8 +113,8 @@
static uint64_t getNearPower2(uint64_t x) {
if (!x) return 0;
unsigned at = CountLeadingZeros_64(x);
- uint64_t complow = 1 << (63 - at);
- uint64_t comphigh = 1 << (64 - at);
+ uint64_t complow = 1ULL << (63 - at);
+ uint64_t comphigh = 1ULL << (64 - at);
//cerr << x << ":" << complow << ":" << comphigh << "\n";
if (abs64(complow - x) <= abs64(comphigh - x))
return complow;