Do not model all INLINEASM instructions as having unmodelled side effects.

Instead encode llvm IR level property "HasSideEffects" in an operand (shared
with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check
the operand when the instruction is an INLINEASM.

This allows memory instructions to be moved around INLINEASM instructions.

llvm-svn: 123044

llvm/lib/CodeGen/PeepholeOptimizer.cpp

@@ -338,7 +338,7 @@ bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) {
 
       if (MI->isLabel() || MI->isPHI() || MI->isImplicitDef() ||
           MI->isKill() || MI->isInlineAsm() || MI->isDebugValue() ||
-          MI->getDesc().hasUnmodeledSideEffects())
+          MI->hasUnmodeledSideEffects())
         continue;
 
       if (MI->getDesc().isCompare()) {