Infer mayload
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45819 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/InstrInfoEmitter.cpp b/utils/TableGen/InstrInfoEmitter.cpp
index f4b9179..e652fc1 100644
--- a/utils/TableGen/InstrInfoEmitter.cpp
+++ b/utils/TableGen/InstrInfoEmitter.cpp
@@ -205,7 +205,7 @@
InstAnalyzer(CDP, mayStore, mayLoad,NeverHasSideEffects).Analyze(Inst.TheDef);
- // InstAnalyzer only correctly analyzes mayStore so far.
+ // InstAnalyzer only correctly analyzes mayStore/mayLoad so far.
if (Inst.mayStore) { // If the .td file explicitly sets mayStore, use it.
// If we decided that this is a store from the pattern, then the .td file
// entry is redundant.
@@ -217,8 +217,18 @@
mayStore = true;
}
- // These two override everything.
- mayLoad = Inst.mayLoad;
+ if (Inst.mayLoad) { // If the .td file explicitly sets mayLoad, use it.
+ // If we decided that this is a load from the pattern, then the .td file
+ // entry is redundant.
+ if (mayLoad)
+ fprintf(stderr,
+ "Warning: mayLoad flag explicitly set on instruction '%s'"
+ " but flag already inferred from pattern.\n",
+ Inst.TheDef->getName().c_str());
+ mayLoad = true;
+ }
+
+
NeverHasSideEffects = Inst.neverHasSideEffects;
#if 0