Revision: 24949
Author: [email protected]
Date: Tue Oct 28 15:22:22 2014 UTC
Log: Add ARMv8 detection in CpuFeatures.
[email protected], [email protected]
Review URL: https://codereview.chromium.org/678313002
https://code.google.com/p/v8/source/detail?r=24949
Modified:
/branches/bleeding_edge/src/arm/assembler-arm.cc
/branches/bleeding_edge/src/flag-definitions.h
/branches/bleeding_edge/src/globals.h
=======================================
--- /branches/bleeding_edge/src/arm/assembler-arm.cc Tue Oct 14 07:47:27
2014 UTC
+++ /branches/bleeding_edge/src/arm/assembler-arm.cc Tue Oct 28 15:22:22
2014 UTC
@@ -109,6 +109,9 @@
if (cpu.architecture() >= 7) {
if (FLAG_enable_armv7) supported_ |= 1u << ARMv7;
+ if (FLAG_enable_armv8 && cpu.architecture() >= 8) {
+ supported_ |= 1u << ARMv8;
+ }
if (FLAG_enable_unaligned_accesses) supported_ |= 1u <<
UNALIGNED_ACCESSES;
// Use movw/movt for QUALCOMM ARMv7 cores.
if (FLAG_enable_movw_movt && cpu.implementer() == base::CPU::QUALCOMM)
{
=======================================
--- /branches/bleeding_edge/src/flag-definitions.h Tue Oct 28 13:14:53 2014
UTC
+++ /branches/bleeding_edge/src/flag-definitions.h Tue Oct 28 15:22:22 2014
UTC
@@ -114,6 +114,11 @@
#else
#define ENABLE_ARMV7_DEFAULT false
#endif
+#if (defined CAN_USE_ARMV8_INSTRUCTIONS) || !(defined
ARM_TEST_NO_FEATURE_PROBE)
+#define ENABLE_ARMV8_DEFAULT true
+#else
+#define ENABLE_ARMV8_DEFAULT false
+#endif
#if (defined CAN_USE_VFP32DREGS) || !(defined ARM_TEST_NO_FEATURE_PROBE)
#define ENABLE_32DREGS_DEFAULT true
#else
@@ -402,6 +407,8 @@
"enable use of VFP3 instructions if available")
DEFINE_BOOL(enable_armv7, ENABLE_ARMV7_DEFAULT,
"enable use of ARMv7 instructions if available (ARM only)")
+DEFINE_BOOL(enable_armv8, ENABLE_ARMV8_DEFAULT,
+ "enable use of ARMv8 instructions if available (ARM 32-bit
only)")
DEFINE_BOOL(enable_neon, ENABLE_NEON_DEFAULT,
"enable use of NEON instructions if available (ARM only)")
DEFINE_BOOL(enable_sudiv, true,
=======================================
--- /branches/bleeding_edge/src/globals.h Mon Oct 27 12:03:25 2014 UTC
+++ /branches/bleeding_edge/src/globals.h Tue Oct 28 15:22:22 2014 UTC
@@ -609,28 +609,29 @@
// CPU feature flags.
enum CpuFeature {
- // x86
- SSE4_1,
- SSE3,
- SAHF,
- // ARM
- VFP3,
- ARMv7,
- SUDIV,
- MLS,
- UNALIGNED_ACCESSES,
- MOVW_MOVT_IMMEDIATE_LOADS,
- VFP32DREGS,
- NEON,
- // MIPS, MIPS64
- FPU,
- FP64FPU,
- MIPSr1,
- MIPSr2,
- MIPSr6,
- // ARM64
- ALWAYS_ALIGN_CSP,
- NUMBER_OF_CPU_FEATURES
+ // x86
+ SSE4_1,
+ SSE3,
+ SAHF,
+ // ARM
+ VFP3,
+ ARMv7,
+ ARMv8,
+ SUDIV,
+ MLS,
+ UNALIGNED_ACCESSES,
+ MOVW_MOVT_IMMEDIATE_LOADS,
+ VFP32DREGS,
+ NEON,
+ // MIPS, MIPS64
+ FPU,
+ FP64FPU,
+ MIPSr1,
+ MIPSr2,
+ MIPSr6,
+ // ARM64
+ ALWAYS_ALIGN_CSP,
+ NUMBER_OF_CPU_FEATURES
};
--
--
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