[llvm] [PowerPC] clean unused PPC target feature FeatureBPERMD (PR #159782)

[zhijian lin via llvm-commits]

https://github.com/diggerlin updated https://github.com/llvm/llvm-project/pull/159782

>From 21a2b27111a4ec6a64e5d321fa3b76a4e59aead3 Mon Sep 17 00:00:00 2001
From: zhijian <zhijian at ca.ibm.com>
Date: Fri, 19 Sep 2025 14:21:43 +0000
Subject: [PATCH] clean unused PPC target feature FeatureBPERMD

---
 llvm/lib/Target/PowerPC/PPC.td | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/llvm/lib/Target/PowerPC/PPC.td b/llvm/lib/Target/PowerPC/PPC.td
index 386d0f65d1ed1..327ca192b1c5b 100644
--- a/llvm/lib/Target/PowerPC/PPC.td
+++ b/llvm/lib/Target/PowerPC/PPC.td
@@ -129,8 +129,6 @@ def FeatureFPCVT     : SubtargetFeature<"fpcvt", "HasFPCVT", "true",
                                         [FeatureFPU]>;
 def FeatureISEL      : SubtargetFeature<"isel","HasISEL", "true",
                                         "Enable the isel instruction">;
-def FeatureBPERMD    : SubtargetFeature<"bpermd", "HasBPERMD", "true",
-                                        "Enable the bpermd instruction">;
 def FeatureExtDiv    : SubtargetFeature<"extdiv", "HasExtDiv", "true",
                                         "Enable extended divide instructions">;
 def FeatureLDBRX     : SubtargetFeature<"ldbrx","HasLDBRX", "true",
@@ -377,7 +375,7 @@ def NoNaNsFPMath
     : Predicate<"Subtarget->getTargetMachine().Options.NoNaNsFPMath">;
 def NaNsFPMath
     : Predicate<"!Subtarget->getTargetMachine().Options.NoNaNsFPMath">;
-def HasBPERMD : Predicate<"Subtarget->hasBPERMD()">;
+def HasBPERMD : Predicate<"Subtarget->getCPUDirective() >= PPC::DIR_PWR7">;
 def HasExtDiv : Predicate<"Subtarget->hasExtDiv()">;
 def IsISA2_06 : Predicate<"Subtarget->isISA2_06()">;
 def IsISA2_07 : Predicate<"Subtarget->isISA2_07()">;
@@ -436,7 +434,6 @@ def ProcessorFeatures {
                                                   FeatureLDBRX,
                                                   Feature64BitSupport,
                                                   /* Feature64BitRegs, */
-                                                  FeatureBPERMD,
                                                   FeatureExtDiv,
                                                   FeatureMFTB,
                                                   DeprecatedDST,