[PowerPC] Update data layout aligment of i128 to 16 (llvm#118004)

Fix 64-bit PowerPC part of
llvm#102783.

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

@@ -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()) {

clang/test/CodeGen/target-data.c

@@ -88,7 +88,7 @@
 
 // RUN: %clang_cc1 -triple powerpc64-lv2 -o - -emit-llvm %s | \
 // RUN: FileCheck %s -check-prefix=PS3
-// PS3: target datalayout = "E-m:e-p:32:32-Fi64-i64:64-n32:64"
+// PS3: target datalayout = "E-m:e-p:32:32-Fi64-i64:64-i128:128-n32:64"
 
 // RUN: %clang_cc1 -triple i686-nacl -o - -emit-llvm %s | \
 // RUN: FileCheck %s -check-prefix=I686-NACL
@@ -128,35 +128,35 @@
 
 // RUN: %clang_cc1 -triple powerpc64-freebsd -o - -emit-llvm %s | \
 // RUN: FileCheck %s -check-prefix=PPC64-FREEBSD
-// PPC64-FREEBSD: target datalayout = "E-m:e-Fn32-i64:64-n32:64"
+// PPC64-FREEBSD: target datalayout = "E-m:e-Fn32-i64:64-i128:128-n32:64"
 
 // RUN: %clang_cc1 -triple powerpc64le-freebsd -o - -emit-llvm %s | \
 // RUN: FileCheck %s -check-prefix=PPC64LE-FREEBSD
-// PPC64LE-FREEBSD: target datalayout = "e-m:e-Fn32-i64:64-n32:64"
+// PPC64LE-FREEBSD: target datalayout = "e-m:e-Fn32-i64:64-i128:128-n32:64"
 
 // RUN: %clang_cc1 -triple powerpc64-linux -o - -emit-llvm %s | \
 // RUN: FileCheck %s -check-prefix=PPC64-LINUX
-// PPC64-LINUX: target datalayout = "E-m:e-Fi64-i64:64-n32:64-S128-v256:256:256-v512:512:512"
+// PPC64-LINUX: target datalayout = "E-m:e-Fi64-i64:64-i128:128-n32:64-S128-v256:256:256-v512:512:512"
 
 // RUN: %clang_cc1 -triple powerpc64-linux -o - -emit-llvm -target-cpu future %s | \
 // RUN: FileCheck %s -check-prefix=PPC64-FUTURE
-// PPC64-FUTURE: target datalayout = "E-m:e-Fi64-i64:64-n32:64-S128-v256:256:256-v512:512:512"
+// PPC64-FUTURE: target datalayout = "E-m:e-Fi64-i64:64-i128:128-n32:64-S128-v256:256:256-v512:512:512"
 
 // RUN: %clang_cc1 -triple powerpc64-linux -o - -emit-llvm -target-cpu pwr10 %s | \
 // RUN: FileCheck %s -check-prefix=PPC64-P10
-// PPC64-P10: target datalayout = "E-m:e-Fi64-i64:64-n32:64-S128-v256:256:256-v512:512:512"
+// PPC64-P10: target datalayout = "E-m:e-Fi64-i64:64-i128:128-n32:64-S128-v256:256:256-v512:512:512"
 
 // RUN: %clang_cc1 -triple powerpc64le-linux -o - -emit-llvm %s | \
 // RUN: FileCheck %s -check-prefix=PPC64LE-LINUX
-// PPC64LE-LINUX: target datalayout = "e-m:e-Fn32-i64:64-n32:64-S128-v256:256:256-v512:512:512"
+// PPC64LE-LINUX: target datalayout = "e-m:e-Fn32-i64:64-i128:128-n32:64-S128-v256:256:256-v512:512:512"
 
 // RUN: %clang_cc1 -triple powerpc64le-linux -o - -emit-llvm -target-cpu future %s | \
 // RUN: FileCheck %s -check-prefix=PPC64LE-FUTURE
-// PPC64LE-FUTURE: target datalayout = "e-m:e-Fn32-i64:64-n32:64-S128-v256:256:256-v512:512:512"
+// PPC64LE-FUTURE: target datalayout = "e-m:e-Fn32-i64:64-i128:128-n32:64-S128-v256:256:256-v512:512:512"
 
 // RUN: %clang_cc1 -triple powerpc64le-linux -o - -emit-llvm -target-cpu pwr10 %s | \
 // RUN: FileCheck %s -check-prefix=PPC64LE-P10
-// PPC64LE-P10: target datalayout = "e-m:e-Fn32-i64:64-n32:64-S128-v256:256:256-v512:512:512"
+// PPC64LE-P10: target datalayout = "e-m:e-Fn32-i64:64-i128:128-n32:64-S128-v256:256:256-v512:512:512"
 
 // RUN: %clang_cc1 -triple nvptx-unknown -o - -emit-llvm %s | \
 // RUN: FileCheck %s -check-prefix=NVPTX

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.isPPC64()) {
     // Mips64 with o32 ABI did not add "-i128:128".
     // Add "-i128:128"
     std::string I64 = "-i64:64";

llvm/lib/Target/PowerPC/PPCTargetMachine.cpp

@@ -185,7 +185,7 @@ static std::string getDataLayoutString(const Triple &T) {
 
   // PPC64 has 32 and 64 bit registers, PPC32 has only 32 bit ones.
   if (is64Bit)
-    Ret += "-n32:64";
+    Ret += "-i128:128-n32:64";
   else
     Ret += "-n32";
 

llvm/test/Analysis/CostModel/PowerPC/load-to-trunc.ll

@@ -7,7 +7,7 @@
 ; Check that cost is 1 for unusual load to register sized load.
 define i32 @loadUnusualIntegerWithTrunc(ptr %ptr) {
 ; CHECK-LABEL: 'loadUnusualIntegerWithTrunc'
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %out = load i128, ptr %ptr, align 8
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %out = load i128, ptr %ptr, align 16
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: %trunc = trunc i128 %out to i32
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret i32 %trunc
 ;
@@ -18,7 +18,7 @@ define i32 @loadUnusualIntegerWithTrunc(ptr %ptr) {
 
 define i128 @loadUnusualInteger(ptr %ptr) {
 ; CHECK-LABEL: 'loadUnusualInteger'
-; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %out = load i128, ptr %ptr, align 8
+; CHECK-NEXT:  Cost Model: Found an estimated cost of 2 for instruction: %out = load i128, ptr %ptr, align 16
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret i128 %out
 ;
   %out = load i128, ptr %ptr

llvm/test/CodeGen/PowerPC/data-align.ll

@@ -0,0 +1,24 @@
+; RUN: llc < %s -mtriple=powerpc-unknown-linux | FileCheck %s
+; RUN: llc < %s -mtriple=powerpc64-unknown-linux | FileCheck %s
+; RUN: llc < %s -mtriple=powerpc64le-unknown-linux | FileCheck %s
+
+; CHECK:      .set .Li8,
+; CHECK-NEXT:  .size	.Li8, 1
+@i8 = private constant i8 42
+
+; CHECK:      .set .Li16,
+; CHECK-NEXT: .size	.Li16, 2
+@i16 = private constant i16 42
+
+; CHECK:      .set .Li32,
+; CHECK-NEXT: .size	.Li32, 4
+@i32 = private constant i32 42
+
+; CHECK:      .set .Li64,
+; CHECK-NEXT: .size	.Li64, 8
+@i64 = private constant i64 42
+
+; CHECK:        .set .Li128,
+; CHECK-NEXT:	.size	.Li128, 16
+@i128 = private constant i128 42
+

llvm/test/Transforms/AtomicExpand/PowerPC/cmpxchg.ll

@@ -30,11 +30,11 @@ define i1 @test_cmpxchg_seq_cst(ptr %addr, i128 %desire, i128 %new) {
 ;
 ; PWR7-LABEL: @test_cmpxchg_seq_cst(
 ; PWR7-NEXT:  entry:
-; PWR7-NEXT:    [[TMP0:%.*]] = alloca i128, align 8
+; PWR7-NEXT:    [[TMP0:%.*]] = alloca i128, align 16
 ; PWR7-NEXT:    call void @llvm.lifetime.start.p0(i64 16, ptr [[TMP0]])
-; PWR7-NEXT:    store i128 [[DESIRE:%.*]], ptr [[TMP0]], align 8
+; PWR7-NEXT:    store i128 [[DESIRE:%.*]], ptr [[TMP0]], align 16
 ; PWR7-NEXT:    [[TMP1:%.*]] = call zeroext i1 @__atomic_compare_exchange_16(ptr [[ADDR:%.*]], ptr [[TMP0]], i128 [[NEW:%.*]], i32 5, i32 5)
-; PWR7-NEXT:    [[TMP2:%.*]] = load i128, ptr [[TMP0]], align 8
+; PWR7-NEXT:    [[TMP2:%.*]] = load i128, ptr [[TMP0]], align 16
 ; PWR7-NEXT:    call void @llvm.lifetime.end.p0(i64 16, ptr [[TMP0]])
 ; PWR7-NEXT:    [[TMP3:%.*]] = insertvalue { i128, i1 } poison, i128 [[TMP2]], 0
 ; PWR7-NEXT:    [[TMP4:%.*]] = insertvalue { i128, i1 } [[TMP3]], i1 [[TMP1]], 1

llvm/unittests/Bitcode/DataLayoutUpgradeTest.cpp

@@ -92,6 +92,16 @@ TEST(DataLayoutUpgradeTest, ValidDataLayoutUpgrade) {
                 "e-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64", "mips64el"),
             "e-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64");
 
+  // Check that PowerPC64 targets add -i128:128.
+  EXPECT_EQ(UpgradeDataLayoutString("e-m:e-i64:64-n32:64", "powerpc64le-linux"),
+            "e-m:e-i64:64-i128:128-n32:64");
+  EXPECT_EQ(
+      UpgradeDataLayoutString("E-m:e-Fn32-i64:64-n32:64", "powerpc64-linux"),
+      "E-m:e-Fn32-i64:64-i128:128-n32:64");
+  EXPECT_EQ(
+      UpgradeDataLayoutString("E-m:a-Fi64-i64:64-n32:64", "powerpc64-ibm-aix"),
+      "E-m:a-Fi64-i64:64-i128:128-n32:64");
+
   // Check that SPIR && SPIRV targets add -G1 if it's not present.
   EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "spir"), "e-p:32:32-G1");
   EXPECT_EQ(UpgradeDataLayoutString("e-p:32:32", "spir64"), "e-p:32:32-G1");
@@ -108,8 +118,6 @@ TEST(DataLayoutUpgradeTest, NoDataLayoutUpgrade) {
       "-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
       "-n8:16:32:64-S128",
       "x86_64-unknown-linux-gnu");
-  std::string DL2 = UpgradeDataLayoutString("e-m:e-i64:64-n32:64",
-                                            "powerpc64le-unknown-linux-gnu");
   std::string DL3 = UpgradeDataLayoutString(
       "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-n32:64-S128-Fn32",
       "aarch64--");
@@ -118,7 +126,6 @@ TEST(DataLayoutUpgradeTest, NoDataLayoutUpgrade) {
       "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-i128:128:128"
       "-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64"
       "-f80:128:128-n8:16:32:64-S128");
-  EXPECT_EQ(DL2, "e-m:e-i64:64-n32:64");
   EXPECT_EQ(DL3, "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-n32:"
                  "64-S128-Fn32");
 
@@ -153,6 +160,14 @@ TEST(DataLayoutUpgradeTest, NoDataLayoutUpgrade) {
   EXPECT_EQ(UpgradeDataLayoutString("G2", "spir64"), "G2");
   EXPECT_EQ(UpgradeDataLayoutString("G2", "spirv32"), "G2");
   EXPECT_EQ(UpgradeDataLayoutString("G2", "spirv64"), "G2");
+
+  // Check that PowerPC32 targets don't add -i128:128.
+  EXPECT_EQ(UpgradeDataLayoutString("e-m:e-i64:64-n32", "powerpcle-linux"),
+            "e-m:e-i64:64-n32");
+  EXPECT_EQ(UpgradeDataLayoutString("E-m:e-Fn32-i64:64-n32", "powerpc-linux"),
+            "E-m:e-Fn32-i64:64-n32");
+  EXPECT_EQ(UpgradeDataLayoutString("E-m:a-Fi64-i64:64-n32", "powerpc-aix"),
+            "E-m:a-Fi64-i64:64-n32");
 }
 
 TEST(DataLayoutUpgradeTest, EmptyDataLayout) {