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

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-powerpc

Author: zhijian lin (diggerlin)

<details>
<summary>Changes</summary>

clean unused PPC target feature FeatureBPERMD.

---
Full diff: https://github.com/llvm/llvm-project/pull/159782.diff


1 Files Affected:

- (modified) llvm/lib/Target/PowerPC/PPC.td (+1-4) 


``````````diff
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,

``````````

</details>


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