[X86] Fix MCNullStreamer support for modules with a CodeView flag

This fixes -filetype=null support when compiling for a Win32 target and the module has a CodeView flag.

The only places changed are the uses of getTargetStreamer function - this patch guards both of them with null checks.

Committed on behalf of @eush (Eugene Sharygin)

Differential Revision: https://reviews.llvm.org/D54008

llvm-svn: 346962

1 files changed, 8 insertions, 8 deletions

diff --git a/llvm/lib/Target/X86/X86AsmPrinter.cpp b/llvm/lib/Target/X86/X86AsmPrinter.cpp
index 74dbdcd2793..b164b4e1fcf 100644
--- a/llvm/lib/Target/X86/X86AsmPrinter.cpp
+++ b/llvm/lib/Target/X86/X86AsmPrinter.cpp
@@ -88,19 +88,19 @@ bool X86AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
 
 void X86AsmPrinter::EmitFunctionBodyStart() {
   if (EmitFPOData) {
-    X86TargetStreamer *XTS =
-        static_cast<X86TargetStreamer *>(OutStreamer->getTargetStreamer());
-    unsigned ParamsSize =
-        MF->getInfo<X86MachineFunctionInfo>()->getArgumentStackSize();
-    XTS->emitFPOProc(CurrentFnSym, ParamsSize);
+    if (auto *XTS =
+        static_cast<X86TargetStreamer *>(OutStreamer->getTargetStreamer()))
+      XTS->emitFPOProc(
+          CurrentFnSym,
+          MF->getInfo<X86MachineFunctionInfo>()->getArgumentStackSize());
   }
 }
 
 void X86AsmPrinter::EmitFunctionBodyEnd() {
   if (EmitFPOData) {
-    X86TargetStreamer *XTS =
-        static_cast<X86TargetStreamer *>(OutStreamer->getTargetStreamer());
-    XTS->emitFPOEndProc();
+    if (auto *XTS =
+            static_cast<X86TargetStreamer *>(OutStreamer->getTargetStreamer()))
+      XTS->emitFPOEndProc();
   }
 }