Author: lattner
Date: Wed Jan 9 22:44:48 2008
New Revision: 45819
URL: http://llvm.org/viewvc/llvm-project?rev=45819&view=rev
Log:
Infer mayload
Modified:
llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp
Modified: llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp?rev=45819&r1=45818&r2=45819&view=diff
==============================================================================
--- llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp (original)
+++ llvm/trunk/utils/TableGen/InstrInfoEmitter.cpp Wed Jan 9 22:44:48 2008
@@ -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
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