Rename is_spurious -> is_volatile

Author: syvb

compiler/rustc_middle/src/mir/interpret/error.rs

@@ -538,7 +538,7 @@ impl InterpError<'_> {
 
     /// Did the error originate from volatile conditons such as the memory available to the
     /// interpreter?
-    pub fn is_spurious(&self) -> bool {
+    pub fn is_volatile(&self) -> bool {
         matches!(self, InterpError::ResourceExhaustion(ResourceExhaustionInfo::MemoryExhausted))
     }
 }

compiler/rustc_mir/src/transform/const_prop.rs

@@ -478,8 +478,8 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> {
             Ok(op) => Some(op),
             Err(error) => {
                 let tcx = self.ecx.tcx.at(c.span);
-                if error.kind().is_spurious() {
-                    // Spurious errors can't be ignored since otherwise the amount of available
+                if error.kind().is_volatile() {
+                    // Volatile errors can't be ignored since otherwise the amount of available
                     // memory influences the result of optimization and the build. The error
                     // doesn't need to be fatal since no code will actually be generated anyways.
                     self.ecx