If we've pushed registers onto the stack, but aren't adjusting the stack pointer

(i.e., there are no local variables and stuff), we still need to output FDE
information for the pushed registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80960 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 5d1ee17c37a4472bb80ce836454d576d0083b31e..76d2b97bf9f78d14b4f0b98a81f6e60edb3b0261 100644 (file)
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -1086,12 +1086,12 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
       emitSPUpdate(MBB, MBBI, StackPtr, -(int64_t)NumBytes, Is64Bit, TII);
   }
 
-  if (NumBytes && needsFrameMoves) {
+  if ((NumBytes || PushedRegs) && needsFrameMoves) {
     // Mark end of stack pointer adjustment.
     unsigned LabelId = MMI->NextLabelID();
     BuildMI(MBB, MBBI, DL, TII.get(X86::DBG_LABEL)).addImm(LabelId);
 
-    if (!HasFP) {
+    if (!HasFP && NumBytes) {
       // Define the current CFA rule to use the provided offset.
       if (StackSize) {
         MachineLocation SPDst(MachineLocation::VirtualFP);