diff options
| -rw-r--r-- | lib/CodeGen/RegisterClassInfo.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/RegisterClassInfo.cpp b/lib/CodeGen/RegisterClassInfo.cpp index fb27213401..9deeb15a3b 100644 --- a/lib/CodeGen/RegisterClassInfo.cpp +++ b/lib/CodeGen/RegisterClassInfo.cpp @@ -20,7 +20,8 @@ using namespace llvm; -RegisterClassInfo::RegisterClassInfo() : Tag(0), TRI(0) {} +RegisterClassInfo::RegisterClassInfo() : Tag(0), MF(0), TRI(0), CalleeSaved(0) +{} void RegisterClassInfo::runOnMachineFunction(const MachineFunction &mf) { bool Update = false; @@ -35,7 +36,7 @@ void RegisterClassInfo::runOnMachineFunction(const MachineFunction &mf) { // Does this MF have different CSRs? const unsigned *CSR = TRI->getCalleeSavedRegs(MF); - if (CSR != CalleeSaved) { + if (Update || CSR != CalleeSaved) { // Build a CSRNum map. Every CSR alias gets an entry pointing to the last // overlapping CSR. CSRNum.reset(new uint8_t[TRI->getNumRegs()]); |