[llvm] [DWARFCFIChecker] Use llvm::unique (NFC) (PR #148766)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/148766

While I am at it, this patch replaces resize with erase, which is a
lot shorter and idiomatic.


>From 3b1893c80e1813d36761ba6aa6a11a9c3ec9a94f Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Mon, 14 Jul 2025 09:58:17 -0700
Subject: [PATCH] [DWARFCFIChecker] Use llvm::unique (NFC)

While I am at it, this patch replaces resize with erase, which is a
lot shorter and idiomatic.
---
 llvm/lib/DWARFCFIChecker/Registers.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/llvm/lib/DWARFCFIChecker/Registers.h b/llvm/lib/DWARFCFIChecker/Registers.h
index 262fb5cfa7af9..a372c4c4345bd 100644
--- a/llvm/lib/DWARFCFIChecker/Registers.h
+++ b/llvm/lib/DWARFCFIChecker/Registers.h
@@ -38,8 +38,7 @@ inline SmallVector<MCPhysReg> getSuperRegs(const MCRegisterInfo *MCRI) {
     }
 
   sort(SuperRegs.begin(), SuperRegs.end());
-  SuperRegs.resize(std::distance(
-      SuperRegs.begin(), std::unique(SuperRegs.begin(), SuperRegs.end())));
+  SuperRegs.erase(llvm::unique(SuperRegs), SuperRegs.end());
   return SuperRegs;
 }