[PowerPC][LLC] Utilize PPC::getNormalizedPPCTargetCPU() to set CPU (#113943)

Utilize common API in PPCTargetParser
(#97541) to set default CPU
with same interfaces for LLC.
This will update AIX default CPU to pwr7 and LoP powerppc64 default CPU
to ppc64.

Author: diggerlin

llvm/docs/ReleaseNotes.md

@@ -164,6 +164,9 @@ Changes to the MIPS Backend
 Changes to the PowerPC Backend
 ------------------------------
 
+* The Linux `ppc64` LLC default cpu is updated from `ppc` to `ppc64`.
+* The AIX LLC default cpu is updated from `generic` to `pwr7`.
+
 Changes to the RISC-V Backend
 -----------------------------
 

llvm/lib/Target/PowerPC/PPCSubtarget.cpp

@@ -29,6 +29,7 @@
 #include "llvm/MC/TargetRegistry.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Target/TargetMachine.h"
+#include "llvm/TargetParser/PPCTargetParser.h"
 #include <cstdlib>
 
 using namespace llvm;
@@ -79,13 +80,10 @@ void PPCSubtarget::initSubtargetFeatures(StringRef CPU, StringRef TuneCPU,
   // Determine default and user specified characteristics
   std::string CPUName = std::string(CPU);
   if (CPUName.empty() || CPU == "generic") {
-    // If cross-compiling with -march=ppc64le without -mcpu
-    if (TargetTriple.getArch() == Triple::ppc64le)
-      CPUName = "ppc64le";
-    else if (TargetTriple.getSubArch() == Triple::PPCSubArch_spe)
+    if (TargetTriple.getSubArch() == Triple::PPCSubArch_spe)
       CPUName = "e500";
     else
-      CPUName = "generic";
+      CPUName = std::string(PPC::getNormalizedPPCTargetCPU(TargetTriple));
   }
 
   // Determine the CPU to schedule for.

llvm/test/Analysis/LoopCacheAnalysis/PowerPC/compute-cost-m32.ll

@@ -6,7 +6,7 @@ target triple = "powerpc-ibm-aix7.2.0.0"
 ; Check IndexedReference::computeRefCost can handle type differences between
 ; CacheLineSize and Numerator
 
-; CHECK: Loop '_loop_1_do_' has cost = 2
+; CHECK: Loop '_loop_1_do_' has cost = 1
 
 %_elem_type_of_v = type <{ i32 }>
 

llvm/test/CodeGen/PowerPC/2007-11-16-landingpad-split.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
+; RUN: llc -mcpu=ppc -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
 ;; Formerly crashed, see PR 1508
 target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f128:64:128"
 target triple = "powerpc64-unknown-linux-gnu"

llvm/test/CodeGen/PowerPC/Frames-dyn-alloca.ll

@@ -1,7 +1,7 @@
 ; RUN: llc < %s -mtriple=powerpc-unknown-linux-gnu | FileCheck %s -check-prefix=PPC32-LINUX
-; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu | FileCheck %s -check-prefix=PPC64-LINUX
+; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=ppc | FileCheck %s -check-prefix=PPC64-LINUX
 ; RUN: llc < %s -mtriple=powerpc-unknown-linux-gnu -frame-pointer=all | FileCheck %s -check-prefix=PPC32-LINUX
-; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -frame-pointer=all | FileCheck %s -check-prefix=PPC64-LINUX
+; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu  -mcpu=ppc -frame-pointer=all | FileCheck %s -check-prefix=PPC64-LINUX
 ; RUN: llc < %s -mtriple=powerpc-unknown-linux-gnu | FileCheck %s -check-prefix=PPC32-LINUX
 
 ; RUN: llc < %s -mcpu=pwr4 -mattr=-altivec -verify-machineinstrs \

llvm/test/CodeGen/PowerPC/Frames-large.ll

@@ -4,10 +4,10 @@
 ; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-linux-gnu \
 ; RUN: -frame-pointer=all | FileCheck %s -check-prefix=PPC32-LINUX-FP
 
-; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu | \
+; RUN: llc -verify-machineinstrs < %s -mcpu=ppc -mtriple=powerpc64-unknown-linux-gnu | \
 ; RUN: FileCheck %s -check-prefix=PPC64-LINUX-NOFP
 
-; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu \
+; RUN: llc -verify-machineinstrs < %s -mcpu=ppc -mtriple=powerpc64-unknown-linux-gnu \
 ; RUN: -frame-pointer=all | FileCheck %s -check-prefix=PPC64-LINUX-FP
 
 ; RUN: llc -verify-machineinstrs < %s -mcpu=pwr4 -mattr=-altivec \

llvm/test/CodeGen/PowerPC/P10-stack-alignment.ll

@@ -2,7 +2,7 @@
 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
 ; RUN:   -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | \
 ; RUN:   FileCheck %s --check-prefix=CHECK-LE
-; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu \
+; RUN: llc -verify-machineinstrs -mcpu=ppc -mtriple=powerpc64-unknown-linux-gnu \
 ; RUN:   -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | \
 ; RUN:   FileCheck %s --check-prefix=CHECK-BE
 ; RUN: opt --passes='sroa,loop-vectorize,loop-unroll,instcombine' -S \

llvm/test/CodeGen/PowerPC/aix-cc-abi-mir.ll

@@ -1,8 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 4
-; RUN: llc -mtriple powerpc-ibm-aix-xcoff -stop-after=machine-cp -verify-machineinstrs < %s | \
+; RUN: llc -mtriple powerpc-ibm-aix-xcoff -mcpu=ppc -stop-after=machine-cp -verify-machineinstrs < %s | \
 ; RUN: FileCheck --check-prefix=32BIT %s
 
-; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -stop-after=machine-cp -verify-machineinstrs < %s | \
+; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -mcpu=ppc -stop-after=machine-cp -verify-machineinstrs < %s | \
 ; RUN: FileCheck --check-prefix=64BIT %s
 
 define void @call_test_chars() {

llvm/test/CodeGen/PowerPC/aix-dwarf.ll

@@ -1,9 +1,9 @@
 
-; RUN: llc -mtriple powerpc-ibm-aix-xcoff -filetype=obj -o %t.o < %s
+; RUN: llc -mtriple powerpc-ibm-aix-xcoff -mcpu=ppc -filetype=obj -o %t.o < %s
 ; RUN: llvm-readobj --section-headers %t.o | FileCheck %s --check-prefixes=SEC,SEC32
 ; RUN: llvm-objdump -r %t.o | FileCheck %s --check-prefix=RELO
 
-; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -filetype=obj -o %t64.o < %s
+; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -mcpu=ppc -filetype=obj -o %t64.o < %s
 ; RUN: llvm-readobj --section-headers %t64.o | FileCheck %s --check-prefixes=SEC,SEC64
 ; RUN: llvm-objdump -r %t64.o | FileCheck %s --check-prefix=RELO64
 

llvm/test/CodeGen/PowerPC/aix-static-init-non-default-priority.ll

@@ -1,5 +1,5 @@
-; RUN: llc -mtriple powerpc-ibm-aix-xcoff -verify-machineinstrs < %s | FileCheck %s
-; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple powerpc-ibm-aix-xcoff -mcpu=ppc -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -mcpu=ppc -verify-machineinstrs < %s | FileCheck %s
 
 @llvm.global_ctors = appending global [5 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 0, ptr @cf1, ptr null }, { i32, ptr, ptr } { i32 21, ptr @cf2, ptr null }, { i32, ptr, ptr } { i32 81, ptr @cf3, ptr null }, { i32, ptr, ptr } { i32 1125, ptr @cf4, ptr null }, { i32, ptr, ptr } { i32 64512, ptr @cf5, ptr null }]
 @llvm.global_dtors = appending global [5 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 20, ptr @df1, ptr null }, { i32, ptr, ptr } { i32 80, ptr @df2, ptr null }, { i32, ptr, ptr } { i32 1124, ptr @df3, ptr null }, { i32, ptr, ptr } { i32 64511, ptr @df4, ptr null }, { i32, ptr, ptr } { i32 65535, ptr @df5, ptr null }]