[PowerPC] Update data layout aligment of i128 to 16

Author: lei137

clang/lib/Basic/Targets/OSTargets.h

@@ -473,7 +473,7 @@ class LLVM_LIBRARY_VISIBILITY PS3PPUTargetInfo : public OSTargetInfo<Target> {
     this->IntMaxType = TargetInfo::SignedLongLong;
     this->Int64Type = TargetInfo::SignedLongLong;
     this->SizeType = TargetInfo::UnsignedInt;
-    this->resetDataLayout("E-m:e-p:32:32-Fi64-i64:64-n32:64");
+    this->resetDataLayout("E-m:e-p:32:32-Fi64-i64:64-i128:128-n32:64");
   }
 };
 

clang/lib/Basic/Targets/PPC.h

@@ -404,11 +404,11 @@ class LLVM_LIBRARY_VISIBILITY PPC32TargetInfo : public PPCTargetInfo {
   PPC32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
       : PPCTargetInfo(Triple, Opts) {
     if (Triple.isOSAIX())
-      resetDataLayout("E-m:a-p:32:32-Fi32-i64:64-n32");
+      resetDataLayout("E-m:a-p:32:32-Fi32-i64:64-i128:128-n32");
     else if (Triple.getArch() == llvm::Triple::ppcle)
-      resetDataLayout("e-m:e-p:32:32-Fn32-i64:64-n32");
+      resetDataLayout("e-m:e-p:32:32-Fn32-i64:64-i128:128-n32");
     else
-      resetDataLayout("E-m:e-p:32:32-Fn32-i64:64-n32");
+      resetDataLayout("E-m:e-p:32:32-Fn32-i64:64-i128:128-n32");
 
     switch (getTriple().getOS()) {
     case llvm::Triple::Linux:
@@ -463,12 +463,12 @@ class LLVM_LIBRARY_VISIBILITY PPC64TargetInfo : public PPCTargetInfo {
 
     if (Triple.isOSAIX()) {
       // TODO: Set appropriate ABI for AIX platform.
-      DataLayout = "E-m:a-Fi64-i64:64-n32:64";
+      DataLayout = "E-m:a-Fi64-i64:64-i128:128-n32:64";
       LongDoubleWidth = 64;
       LongDoubleAlign = DoubleAlign = 32;
       LongDoubleFormat = &llvm::APFloat::IEEEdouble();
     } else if ((Triple.getArch() == llvm::Triple::ppc64le)) {
-      DataLayout = "e-m:e-Fn32-i64:64-n32:64";
+      DataLayout = "e-m:e-Fn32-i64:64-i128:128-n32:64";
       ABI = "elfv2";
     } else {
       DataLayout = "E-m:e";
@@ -479,7 +479,7 @@ class LLVM_LIBRARY_VISIBILITY PPC64TargetInfo : public PPCTargetInfo {
         ABI = "elfv1";
         DataLayout += "-Fi64";
       }
-      DataLayout += "-i64:64-n32:64";
+      DataLayout += "-i64:64-i128:128-n32:64";
     }
 
     if (Triple.isOSFreeBSD() || Triple.isOSOpenBSD() || Triple.isMusl()) {

llvm/lib/IR/AutoUpgrade.cpp

@@ -5559,7 +5559,7 @@ std::string llvm::UpgradeDataLayoutString(StringRef DL, StringRef TT) {
     return Res;
   }
 
-  if (T.isSPARC() || (T.isMIPS64() && !DL.contains("m:m"))) {
+  if (T.isSPARC() || (T.isMIPS64() && !DL.contains("m:m")) || T.isPPC()) {
     // Mips64 with o32 ABI did not add "-i128:128".
     // Add "-i128:128"
     std::string I64 = "-i64:64";

llvm/lib/Target/PowerPC/PPCTargetMachine.cpp

@@ -183,6 +183,9 @@ static std::string getDataLayoutString(const Triple &T) {
   // documentation are wrong; these are correct (i.e. "what gcc does").
   Ret += "-i64:64";
 
+  // Alignment for 128 bit integers.
+  Ret += "-i128:128";
+
   // PPC64 has 32 and 64 bit registers, PPC32 has only 32 bit ones.
   if (is64Bit)
     Ret += "-n32:64";