PPC: Add Power10 to the supported list and enable related features

Milad Fa · V8 LUCI CQ · commit 530080c44af2 · 2021-04-29T14:27:55.000Z
This CL adds Power10 recognition to Linux, AIX as well as IBMi. Enabled features include: MODULO FPR_GPR_MOV SIMD LWSYNC ISELECT VSX Change-Id: Ifc337e6497a3efe9697bcf03063a2b94471f96e9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2855041 Reviewed-by: Clemens Backes <clemensb@chromium.org> Reviewed-by: Junliang Yan <junyan@redhat.com> Reviewed-by: Vasili Skurydzin <vasili.skurydzin@ibm.com> Commit-Queue: Milad Fa <mfarazma@redhat.com> Cr-Commit-Position: refs/heads/master@{#74279}
diff --git a/src/base/cpu.cc b/src/base/cpu.cc
@@ -31,6 +31,9 @@
 #ifndef POWER_9
 #define POWER_9 0x20000
 #endif
+#ifndef POWER_10
+#define POWER_10 0x40000
+#endif
 #endif
 #if V8_OS_POSIX
 #include <unistd.h>  // sysconf()
@@ -804,7 +807,9 @@ CPU::CPU()
 
   part_ = -1;
   if (auxv_cpu_type) {
-    if (strcmp(auxv_cpu_type, "power9") == 0) {
+    if (strcmp(auxv_cpu_type, "power10") == 0) {
+      part_ = kPPCPower10;
+    } else if (strcmp(auxv_cpu_type, "power9") == 0) {
       part_ = kPPCPower9;
     } else if (strcmp(auxv_cpu_type, "power8") == 0) {
       part_ = kPPCPower8;
@@ -825,6 +830,9 @@ CPU::CPU()
 
 #elif V8_OS_AIX
   switch (_system_configuration.implementation) {
+    case POWER_10:
+      part_ = kPPCPower10;
+      break;
     case POWER_9:
       part_ = kPPCPower9;
       break;
diff --git a/src/base/cpu.h b/src/base/cpu.h
@@ -70,6 +70,7 @@ class V8_BASE_EXPORT CPU final {
     kPPCPower7,
     kPPCPower8,
     kPPCPower9,
+    kPPCPower10,
     kPPCG4,
     kPPCG5,
     kPPCPA6T
diff --git a/src/codegen/ppc/assembler-ppc.cc b/src/codegen/ppc/assembler-ppc.cc
@@ -73,28 +73,33 @@ void CpuFeatures::ProbeImpl(bool cross_compile) {
 #ifndef USE_SIMULATOR
   // Probe for additional features at runtime.
   base::CPU cpu;
-  if (cpu.part() == base::CPU::kPPCPower9) {
+  if (cpu.part() == base::CPU::kPPCPower9 ||
+      cpu.part() == base::CPU::kPPCPower10) {
     supported_ |= (1u << MODULO);
   }
 #if V8_TARGET_ARCH_PPC64
   if (cpu.part() == base::CPU::kPPCPower8 ||
-      cpu.part() == base::CPU::kPPCPower9) {
+      cpu.part() == base::CPU::kPPCPower9 ||
+      cpu.part() == base::CPU::kPPCPower10) {
     supported_ |= (1u << FPR_GPR_MOV);
   }
   // V8 PPC Simd implementations need P9 at a minimum.
-  if (cpu.part() == base::CPU::kPPCPower9) {
+  if (cpu.part() == base::CPU::kPPCPower9 ||
+      cpu.part() == base::CPU::kPPCPower10) {
     supported_ |= (1u << SIMD);
   }
 #endif
   if (cpu.part() == base::CPU::kPPCPower6 ||
       cpu.part() == base::CPU::kPPCPower7 ||
       cpu.part() == base::CPU::kPPCPower8 ||
-      cpu.part() == base::CPU::kPPCPower9) {
+      cpu.part() == base::CPU::kPPCPower9 ||
+      cpu.part() == base::CPU::kPPCPower10) {
     supported_ |= (1u << LWSYNC);
   }
   if (cpu.part() == base::CPU::kPPCPower7 ||
       cpu.part() == base::CPU::kPPCPower8 ||
-      cpu.part() == base::CPU::kPPCPower9) {
+      cpu.part() == base::CPU::kPPCPower9 ||
+      cpu.part() == base::CPU::kPPCPower10) {
     supported_ |= (1u << ISELECT);
     supported_ |= (1u << VSX);
   }
