// In such cases, it is fine to use RIP as we are sure the 32 high
// bits are not set. We do not need variants for NOSP as RIP is not
// allowed there.
-// Alignment is 64 because we have RIP.
+// RIP is not spilled anywhere for now, so stick to 32-bit alignment
+// to save on memory space.
// FIXME: We could allow all 64bit registers, but we would need
// something to check that the 32 high bits are not set,
// which we do not have right now.
-def LOW32_ADDR_ACCESS : RegisterClass<"X86", [i32], 64, (add GR32, RIP)>;
+def LOW32_ADDR_ACCESS : RegisterClass<"X86", [i32], 32, (add GR32, RIP)>;
// When RBP is used as a base pointer in a 32-bit addresses environement,
// this is also safe to use the full register to access addresses.