[stackprotector] Small Bit of computation hoisting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188771 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/StackProtector.cpp b/lib/CodeGen/StackProtector.cpp
index 2cd2219..86ca53d 100644
--- a/lib/CodeGen/StackProtector.cpp
+++ b/lib/CodeGen/StackProtector.cpp
@@ -387,7 +387,8 @@
/// value. It calls __stack_chk_fail if they differ.
bool StackProtector::InsertStackProtectors() {
bool HasPrologue = false;
- bool SupportsSelectionDAGSP = false;
+ bool SupportsSelectionDAGSP =
+ EnableSelectionDAGSP && !TM->Options.EnableFastISel;
AllocaInst *AI = 0; // Place on stack that stores the stack guard.
Value *StackGuardVar = 0; // The stack guard variable.
@@ -398,12 +399,11 @@
if (!HasPrologue) {
HasPrologue = true;
- SupportsSelectionDAGSP = CreatePrologue(F, M, RI, TLI, Trip, AI,
- StackGuardVar);
+ SupportsSelectionDAGSP &= CreatePrologue(F, M, RI, TLI, Trip, AI,
+ StackGuardVar);
}
- if (EnableSelectionDAGSP && !TM->Options.EnableFastISel &&
- SupportsSelectionDAGSP) {
+ if (SupportsSelectionDAGSP) {
// Since we have a potential tail call, insert the special stack check
// intrinsic.
Instruction *InsertionPt = 0;