[PATCH] D135815: [AArch64] Remove dead code for inserting SEH opcodes for realignment. NFC.

[Martin Storsjö via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG19e2b403b4a9: [AArch64] Remove dead code for inserting SEH opcodes for realignment. NFC. (authored by mstorsjo).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D135815/new/

https://reviews.llvm.org/D135815

Files:
  llvm/lib/Target/AArch64/AArch64FrameLowering.cpp


Index: llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
===================================================================
--- llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
+++ llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
@@ -1833,12 +1833,10 @@
           .addReg(scratchSPReg, RegState::Kill)
           .addImm(andMaskEncoded);
       AFI->setStackRealigned(true);
-      if (NeedsWinCFI) {
-        HasWinCFI = true;
-        BuildMI(MBB, MBBI, DL, TII->get(AArch64::SEH_StackAlloc))
-            .addImm(NumBytes & andMaskEncoded)
-            .setMIFlag(MachineInstr::FrameSetup);
-      }
+
+      // No need for SEH instructions here; if we're realigning the stack,
+      // we've set a frame pointer and already finished the SEH prologue.
+      assert(!NeedsWinCFI);
     }
   }
 


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