[llvm] [AArch64] Fix return address auth in tail call epilogues (PR #189484)

via llvm-commits llvm-commits at lists.llvm.org
Fri Apr 3 11:42:26 PDT 2026


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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- llvm/lib/Target/AArch64/AArch64FrameLowering.h llvm/lib/Target/AArch64/AArch64PointerAuth.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64PointerAuth.cpp b/llvm/lib/Target/AArch64/AArch64PointerAuth.cpp
index 7eda18f2e..747c1243f 100644
--- a/llvm/lib/Target/AArch64/AArch64PointerAuth.cpp
+++ b/llvm/lib/Target/AArch64/AArch64PointerAuth.cpp
@@ -64,8 +64,7 @@ char AArch64PointerAuthLegacy::ID = 0;
 static void emitPACSymOffsetIntoReg(const TargetInstrInfo &TII,
                                     MachineBasicBlock &MBB,
                                     MachineBasicBlock::iterator I, DebugLoc DL,
-                                    MCSymbol *PACSym,
-                                    Register Reg) {
+                                    MCSymbol *PACSym, Register Reg) {
   BuildMI(MBB, I, DL, TII.get(AArch64::ADRP), Reg)
       .addSym(PACSym, AArch64II::MO_PAGE)
       .setMIFlag(MachineInstr::FrameDestroy);
@@ -220,7 +219,8 @@ void AArch64PointerAuthImpl::authenticateLR(
         // The PACM hint-space instruction modifies the following AUTI[AB]1716
         // to optionally take x15 as an extra operand depending on the
         // presence of +pauth-lr at runtime. On machines without +pauth-lr, it
-        // behaves as a nop, and the address of the PACI[AB]SP in x15 is ignored.
+        // behaves as a nop, and the address of the PACI[AB]SP in x15 is
+        // ignored.
         BuildMI(MBB, MBBI, DL, TII->get(AArch64::PACM))
             .setMIFlag(MachineInstr::FrameDestroy);
 

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https://github.com/llvm/llvm-project/pull/189484


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