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[inline asm] Get the mayLoad/mayStore directly from the MIOp_ExtraInfo operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167050 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -58,10 +58,8 @@ public:
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NoFlags = 0,
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FrameSetup = 1 << 0, // Instruction is used as a part of
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// function frame setup code.
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InsideBundle = 1 << 1, // Instruction is inside a bundle (not
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InsideBundle = 1 << 1 // Instruction is inside a bundle (not
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// the first MI in a bundle)
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MayLoad = 1 << 2, // Instruction could possibly read memory.
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MayStore = 1 << 3 // Instruction could possibly modify memory.
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};
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private:
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const MCInstrDesc *MCID; // Instruction descriptor.
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@ -447,7 +445,12 @@ public:
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/// Instructions with this flag set are not necessarily simple load
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/// instructions, they may load a value and modify it, for example.
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bool mayLoad(QueryType Type = AnyInBundle) const {
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return hasProperty(MCID::MayLoad, Type) || (Flags & MayLoad);
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if (isInlineAsm()) {
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unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm();
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if (ExtraInfo & InlineAsm::Extra_MayLoad)
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return true;
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}
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return hasProperty(MCID::MayLoad, Type);
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}
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@ -456,7 +459,12 @@ public:
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/// instructions, they may store a modified value based on their operands, or
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/// may not actually modify anything, for example.
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bool mayStore(QueryType Type = AnyInBundle) const {
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return hasProperty(MCID::MayStore, Type) || (Flags & MayStore);
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if (isInlineAsm()) {
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unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm();
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if (ExtraInfo & InlineAsm::Extra_MayStore)
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return true;
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}
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return hasProperty(MCID::MayStore, Type);
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}
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//===--------------------------------------------------------------------===//
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@ -897,19 +897,13 @@ EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
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const char *AsmStr = cast<ExternalSymbolSDNode>(AsmStrV)->getSymbol();
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MI->addOperand(MachineOperand::CreateES(AsmStr));
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// Add the HasSideEffect and isAlignStack bits.
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// Add the HasSideEffect, isAlignStack, AsmDialect, MayLoad and MayStore
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// bits.
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int64_t ExtraInfo =
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cast<ConstantSDNode>(Node->getOperand(InlineAsm::Op_ExtraInfo))->
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getZExtValue();
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MI->addOperand(MachineOperand::CreateImm(ExtraInfo));
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// Set the MayLoad and MayStore flags.
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if (ExtraInfo & InlineAsm::Extra_MayLoad)
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MI->setFlag(MachineInstr::MayLoad);
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if (ExtraInfo & InlineAsm::Extra_MayStore)
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MI->setFlag(MachineInstr::MayStore);
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// Remember to operand index of the group flags.
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SmallVector<unsigned, 8> GroupIdx;
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