[llvm] [PowerPC] Add assembly directives to change endianness (PR #149811)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.h llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp llvm/lib/Target/PowerPC/MCTargetDesc/PPCTargetStreamer.h --diff_from_common_commit
``````````

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``````````diff
diff --git a/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp b/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
index 5fe8f1362..2d51c7c91 100644
--- a/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
+++ b/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
@@ -1689,11 +1689,9 @@ bool PPCAsmParser::ParseDirective(AsmToken DirectiveID) {
     parseGNUAttribute(DirectiveID.getLoc());
   else if (IDVal == ".big") {
     ParseDirectiveSetEndian(false);
-  }
-  else if (IDVal == ".little") {
+  } else if (IDVal == ".little") {
     ParseDirectiveSetEndian(true);
-  }
-  else
+  } else
     return true;
   return false;
 }
diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.h b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.h
index 5043017a6..a7f774e78 100644
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.h
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.h
@@ -117,9 +117,7 @@ public:
   /// with the NOTOC relocation.
   bool isNoTOCCallInstr(const MCInst &MI) const;
 
-  void setLittleEndian(bool little_endian) {
-    IsLittleEndian = little_endian;
-  }
+  void setLittleEndian(bool little_endian) { IsLittleEndian = little_endian; }
 };
 
 } // namespace llvm

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https://github.com/llvm/llvm-project/pull/149811