Add predicates for checking if a virtual register has a physical
register mapping or a stack slot mapping.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11795 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.h b/lib/CodeGen/VirtRegMap.h
index 90bd2af..f6a1cec 100644
--- a/lib/CodeGen/VirtRegMap.h
+++ b/lib/CodeGen/VirtRegMap.h
@@ -57,6 +57,10 @@
v2ssMap_(mf.getSSARegMap()->getNumVirtualRegs(), NO_STACK_SLOT) {
}
+ bool hasPhys(unsigned virtReg) const {
+ return getPhys(virtReg) != NO_PHYS_REG;
+ }
+
unsigned getPhys(unsigned virtReg) const {
assert(MRegisterInfo::isVirtualRegister(virtReg));
return v2pMap_[toIndex(virtReg)];
@@ -78,6 +82,10 @@
v2pMap_[toIndex(virtReg)] = NO_PHYS_REG;
}
+ bool hasStackSlot(unsigned virtReg) const {
+ return getStackSlot(virtReg) != NO_STACK_SLOT;
+ }
+
int getStackSlot(unsigned virtReg) const {
assert(MRegisterInfo::isVirtualRegister(virtReg));
return v2ssMap_[toIndex(virtReg)];