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Infer mayload

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45819 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-01-10 04:44:48 +00:00
parent 8947dd539e
commit 8926038785
1 changed files with 13 additions and 3 deletions
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16
utils/TableGen/InstrInfoEmitter.cpp
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@ -205,7 +205,7 @@ void InstrInfoEmitter::InferFromPattern(const CodeGenInstruction &Inst,
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 @@ void InstrInfoEmitter::InferFromPattern(const CodeGenInstruction &Inst,
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