Don't flush the raw_ostream between each MachineFunction. These flush

calls were originally put in place because errs() at one time was
not unbuffered, and these print routines are commonly used with errs()
for debugging. However, errs() is now properly unbuffered, so the
flush calls are no longer needed. This significantly reduces the
number of write(2) calls for regular asm printing when there are many
small functions.

llvm-svn: 78137

llvm/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp

@@ -330,8 +330,6 @@ bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
   // Emit post-function debug information.
   DW->EndFunction(&MF);
 
-  O.flush();
-
   return false;
 }
 

llvm/lib/Target/MSP430/MSP430AsmPrinter.cpp

@@ -134,8 +134,6 @@ bool MSP430AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
   if (TAI->hasDotTypeDotSizeDirective())
     O << "\t.size\t" << CurrentFnName << ", .-" << CurrentFnName << '\n';
 
-  O.flush();
-
   // We didn't modify anything
   return false;
 }

llvm/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp

@@ -646,8 +646,6 @@ bool PPCLinuxAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
   // Emit post-function debug information.
   DW->EndFunction(&MF);
 
-  O.flush();
-
   // We didn't modify anything.
   return false;
 }

llvm/lib/Target/SystemZ/AsmPrinter/SystemZAsmPrinter.cpp

@@ -144,8 +144,6 @@ bool SystemZAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
   // Print out jump tables referenced by the function.
   EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
 
-  O.flush();
-
   // We didn't modify anything
   return false;
 }

llvm/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp

@@ -284,8 +284,6 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
   // Print out jump tables referenced by the function.
   EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
 
-  O.flush();
-
   // We didn't modify anything.
   return false;
 }

llvm/lib/Target/X86/AsmPrinter/X86IntelAsmPrinter.cpp

@@ -183,8 +183,6 @@ bool X86IntelAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
 
   O << CurrentFnName << "\tendp\n";
 
-  O.flush();
-
   // We didn't modify anything.
   return false;
 }