[EVM] Don't check for function name to detect entry function

After FE changes, "evm-entry-function" attribute is set to
the entry function. Instead of checking the function name
check for this attribute.

Signed-off-by: Vladimir Radosavljevic <[email protected]>

Author: vladimirradosavljevic

llvm/lib/Target/EVM/EVMAsmPrinter.cpp

@@ -132,12 +132,12 @@ void EVMAsmPrinter::emitFunctionBodyEnd() { FirstFunctIsHandled = true; }
 void EVMAsmPrinter::emitBasicBlockStart(const MachineBasicBlock &MBB) {
   AsmPrinter::emitBasicBlockStart(MBB);
 
-  // If this is __entry function, we don't need to emit JUMPDEST
+  // If this is the entry function, we don't need to emit JUMPDEST
   // instruction in the first basic block, as it is the entry point
   // of the EVM bytecode.
   auto IsEntryPoint = [this](const MachineBasicBlock &MBB) {
     return !FirstFunctIsHandled && &MBB == &MF->front() &&
-           MF->getName() == "__entry";
+           MF->getFunction().hasFnAttribute("evm-entry-function");
   };
 
   // Emit JUMPDEST instruction at the beginning of the basic block, if

llvm/test/CodeGen/EVM/jumpdest-in-entry-point.ll

@@ -6,7 +6,7 @@ target triple = "evm"
 
 declare void @llvm.evm.return(ptr addrspace(1), i256)
 
-define void @__entry() noreturn {
+define void @__entry() noreturn "evm-entry-function" {
 ; CHECK-LABEL: __entry:
 ; CHECK:       ; %bb.0: ; %entry
 ; CHECK-NEXT:    PUSH0