[LoongArch] Support la664 (#100068)

A new ProcessorModel called `la664` is defined in LoongArch.td to
support `-march/-mtune=la664`.

Author: Ami-zhang

clang/test/Driver/loongarch-march.c

@@ -6,6 +6,8 @@
 // RUN:   FileCheck %s --check-prefix=CC1-LA64V1P0
 // RUN: %clang --target=loongarch64 -march=la64v1.1 -fsyntax-only %s -### 2>&1 | \
 // RUN:   FileCheck %s --check-prefix=CC1-LA64V1P1
+// RUN: %clang --target=loongarch64 -march=la664 -fsyntax-only %s -### 2>&1 | \
+// RUN:   FileCheck %s --check-prefix=CC1-LA664
 // RUN: %clang --target=loongarch64 -march=loongarch64 -S -emit-llvm %s -o - | \
 // RUN:   FileCheck %s --check-prefix=IR-LOONGARCH64
 // RUN: %clang --target=loongarch64 -march=la464 -S -emit-llvm %s -o - | \
@@ -14,6 +16,8 @@
 // RUN:   FileCheck %s --check-prefix=IR-LA64V1P0
 // RUN: %clang --target=loongarch64 -march=la64v1.1 -S -emit-llvm %s -o - | \
 // RUN:   FileCheck %s --check-prefix=IR-LA64V1P1
+// RUN: %clang --target=loongarch64 -march=la664 -S -emit-llvm %s -o - | \
+// RUN:   FileCheck %s --check-prefix=IR-LA664
 
 // CC1-LOONGARCH64: "-target-cpu" "loongarch64"
 // CC1-LOONGARCH64-NOT: "-target-feature"
@@ -39,10 +43,17 @@
 // CC1-LA64V1P1-NOT: "-target-feature"
 // CC1-LA64V1P1: "-target-abi" "lp64d"
 
+// CC1-LA664: "-target-cpu" "la664"
+// CC1-LA664-NOT: "-target-feature"
+// CC1-LA664: "-target-feature" "+64bit" "-target-feature" "+f" "-target-feature" "+d" "-target-feature" "+lsx" "-target-feature" "+lasx" "-target-feature" "+ual" "-target-feature" "+frecipe"
+// CC1-LA664-NOT: "-target-feature"
+// CC1-LA664: "-target-abi" "lp64d"
+
 // IR-LOONGARCH64: attributes #[[#]] ={{.*}}"target-cpu"="loongarch64" {{.*}}"target-features"="+64bit,+d,+f,+ual"
 // IR-LA464: attributes #[[#]] ={{.*}}"target-cpu"="la464" {{.*}}"target-features"="+64bit,+d,+f,+lasx,+lsx,+ual"
 // IR-LA64V1P0: attributes #[[#]] ={{.*}}"target-cpu"="loongarch64" {{.*}}"target-features"="+64bit,+d,+lsx,+ual"
 // IR-LA64V1P1: attributes #[[#]] ={{.*}}"target-cpu"="loongarch64" {{.*}}"target-features"="+64bit,+d,+frecipe,+lsx,+ual"
+// IR-LA664: attributes #[[#]] ={{.*}}"target-cpu"="la664" {{.*}}"target-features"="+64bit,+d,+f,+frecipe,+lasx,+lsx,+ual"
 
 int foo(void) {
   return 3;

clang/test/Driver/loongarch-mtune.c

@@ -8,6 +8,11 @@
 // RUN: %clang --target=loongarch64 -mtune=la464 -S -emit-llvm %s -o - | \
 // RUN:   FileCheck %s --check-prefix=IRATTR -DCPU=la464
 
+// RUN: %clang --target=loongarch64 -mtune=la664 -fsyntax-only %s -### 2>&1 | \
+// RUN:   FileCheck %s --check-prefix=CC1ARG -DCPU=la664
+// RUN: %clang --target=loongarch64 -mtune=la664 -S -emit-llvm %s -o - | \
+// RUN:   FileCheck %s --check-prefix=IRATTR -DCPU=la664
+
 // RUN: %clang --target=loongarch64 -mtune=invalidcpu -fsyntax-only %s -### 2>&1 | \
 // RUN:   FileCheck %s --check-prefix=CC1ARG -DCPU=invalidcpu
 // RUN: not %clang --target=loongarch64 -mtune=invalidcpu -S -emit-llvm %s -o /dev/null 2>&1 | \

clang/test/Preprocessor/init-loongarch.c

@@ -832,6 +832,14 @@
 // RUN:   FileCheck --match-full-lines --check-prefixes=ARCH-TUNE,FRECIPE -DARCH=loongarch64 -DTUNE=loongarch64 %s
 // RUN: %clang --target=loongarch64 -x c -E -dM %s -o - -march=loongarch64 -Xclang -target-feature -Xclang +lsx -Xclang -target-feature -Xclang +frecipe | \
 // RUN:   FileCheck --match-full-lines --check-prefixes=ARCH-TUNE,FRECIPE -DARCH=la64v1.1 -DTUNE=loongarch64 %s
+// RUN: %clang --target=loongarch64 -x c -E -dM %s -o - -march=la664 | \
+// RUN:   FileCheck --match-full-lines --check-prefixes=ARCH-TUNE,FRECIPE -DARCH=la664 -DTUNE=la664 %s
+// RUN: %clang --target=loongarch64 -x c -E -dM %s -o - -mtune=la664 | \
+// RUN:   FileCheck --match-full-lines --check-prefix=ARCH-TUNE -DARCH=loongarch64 -DTUNE=la664 %s
+// RUN: %clang --target=loongarch64 -x c -E -dM %s -o - -march=loongarch64 -mtune=la664 | \
+// RUN:   FileCheck --match-full-lines --check-prefix=ARCH-TUNE -DARCH=loongarch64 -DTUNE=la664 %s
+// RUN: %clang --target=loongarch64 -x c -E -dM %s -o - -march=la664 -mtune=loongarch64 | \
+// RUN:   FileCheck --match-full-lines --check-prefixes=ARCH-TUNE,FRECIPE -DARCH=la664 -DTUNE=loongarch64 %s
 
 // ARCH-TUNE: #define __loongarch_arch "[[ARCH]]"
 // FRECIPE: #define __loongarch_frecipe 1

llvm/include/llvm/TargetParser/LoongArchTargetParser.def

@@ -10,6 +10,7 @@ LOONGARCH_FEATURE("+lasx", FK_LASX)
 LOONGARCH_FEATURE("+lbt", FK_LBT)
 LOONGARCH_FEATURE("+lvz", FK_LVZ)
 LOONGARCH_FEATURE("+ual", FK_UAL)
+LOONGARCH_FEATURE("+frecipe", FK_FRECIPE)
 
 #undef LOONGARCH_FEATURE
 
@@ -19,5 +20,6 @@ LOONGARCH_FEATURE("+ual", FK_UAL)
 
 LOONGARCH_ARCH("loongarch64", AK_LOONGARCH64, FK_64BIT | FK_FP32 | FK_FP64 | FK_UAL)
 LOONGARCH_ARCH("la464", AK_LA464, FK_64BIT | FK_FP32 | FK_FP64 | FK_LSX | FK_LASX | FK_UAL)
+LOONGARCH_ARCH("la664", AK_LA664, FK_64BIT | FK_FP32 | FK_FP64 | FK_LSX | FK_LASX | FK_UAL | FK_FRECIPE)
 
 #undef LOONGARCH_ARCH

llvm/include/llvm/TargetParser/LoongArchTargetParser.h

@@ -46,6 +46,9 @@ enum FeatureKind : uint32_t {
 
   // Allow memory accesses to be unaligned.
   FK_UAL = 1 << 8,
+
+  // Floating-point approximate reciprocal instructions are available.
+  FK_FRECIPE = 1 << 9,
 };
 
 struct FeatureInfo {

llvm/lib/Target/LoongArch/LoongArch.td

@@ -151,6 +151,13 @@ def : ProcessorModel<"la464", NoSchedModel, [Feature64Bit,
                                              FeatureExtLVZ,
                                              FeatureExtLBT]>;
 
+def : ProcessorModel<"la664", NoSchedModel, [Feature64Bit,
+                                             FeatureUAL,
+                                             FeatureExtLASX,
+                                             FeatureExtLVZ,
+                                             FeatureExtLBT,
+                                             FeatureFrecipe]>;
+
 //===----------------------------------------------------------------------===//
 // Define the LoongArch target.
 //===----------------------------------------------------------------------===//

llvm/lib/TargetParser/Host.cpp

@@ -1562,6 +1562,8 @@ StringRef sys::getHostCPUName() {
   switch (processor_id & 0xf000) {
   case 0xc000: // Loongson 64bit, 4-issue
     return "la464";
+  case 0xd000: // Loongson 64bit, 6-issue
+    return "la664";
   // TODO: Others.
   default:
     break;

llvm/test/CodeGen/LoongArch/cpus.ll

@@ -3,6 +3,7 @@
 
 ; RUN: llc < %s --mtriple=loongarch64 -mattr=+d --mcpu=loongarch64 2>&1 | FileCheck %s
 ; RUN: llc < %s --mtriple=loongarch64 -mattr=+d --mcpu=la464 2>&1 | FileCheck %s
+; RUN: llc < %s --mtriple=loongarch64 -mattr=+d --mcpu=la664 2>&1 | FileCheck %s
 ; RUN: llc < %s --mtriple=loongarch64 -mattr=+d 2>&1 | FileCheck %s
 
 ; CHECK-NOT: {{.*}} is not a recognized processor for this target
@@ -18,3 +19,7 @@ define void @tune_cpu_loongarch64() "tune-cpu"="loongarch64" {
 define void @tune_cpu_la464() "tune-cpu"="la464" {
   ret void
 }
+
+define void @tune_cpu_la664() "tune-cpu"="la664" {
+  ret void
+}