1. Use SubtargetFeatures in llc/lli.
2. Propagate feature "string" to all targets.
3. Implement use of SubtargetFeatures in PowerPCTargetSubtarget.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23192 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCSubtarget.cpp b/lib/Target/PowerPC/PPCSubtarget.cpp
index 686c11c..2c1b783 100644
--- a/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -15,6 +15,8 @@
#include "PowerPC.h"
#include "llvm/Module.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Target/SubtargetFeature.h"
+
using namespace llvm;
PPCTargetEnum llvm::PPCTarget = TargetDefault;
@@ -30,42 +32,112 @@
cl::desc("Enable optimizations for GP cpus"));
}
+enum PowerPCFeature {
+ PowerPCFeature64Bit = 1 << 0,
+ PowerPCFeatureAltivec = 1 << 1,
+ PowerPCFeatureFSqrt = 1 << 2,
+ PowerPCFeatureGPUL = 1 << 3,
+};
+
+/// Sorted (by key) array of values for CPU subtype.
+static const SubtargetFeatureKV PowerPCSubTypeKV[] = {
+ { "601" , 0 },
+ { "602" , 0 },
+ { "603" , 0 },
+ { "603e" , 0 },
+ { "603ev" , 0 },
+ { "604" , 0 },
+ { "604e" , 0 },
+ { "620" , 0 },
+ { "7400" , PowerPCFeatureAltivec },
+ { "7450" , PowerPCFeatureAltivec },
+ { "750" , 0 },
+ { "970" , PowerPCFeature64Bit | PowerPCFeatureAltivec |
+ PowerPCFeatureFSqrt | PowerPCFeatureGPUL },
+ { "g3" , 0 },
+ { "g4" , PowerPCFeatureAltivec },
+ { "g4+" , PowerPCFeatureAltivec },
+ { "g5" , PowerPCFeature64Bit | PowerPCFeatureAltivec |
+ PowerPCFeatureFSqrt | PowerPCFeatureGPUL },
+ { "generic", 0 }
+};
+/// Length of PowerPCSubTypeKV.
+static const unsigned PowerPCSubTypeKVSize = sizeof(PowerPCSubTypeKV)
+ / sizeof(SubtargetFeatureKV);
+
+/// Sorted (by key) array of values for CPU features.
+static SubtargetFeatureKV PowerPCFeatureKV[] = {
+ { "64bit" , PowerPCFeature64Bit },
+ { "altivec", PowerPCFeatureAltivec },
+ { "fsqrt" , PowerPCFeatureFSqrt },
+ { "gpul" , PowerPCFeatureGPUL }
+ };
+/// Length of PowerPCFeatureKV.
+static const unsigned PowerPCFeatureKVSize = sizeof(PowerPCFeatureKV)
+ / sizeof(SubtargetFeatureKV);
+
+
#if defined(__APPLE__)
#include <mach/mach.h>
#include <mach/mach_host.h>
#include <mach/host_info.h>
#include <mach/machine.h>
-static boolean_t IsGP() {
+/// GetCurrentPowerPCFeatures - Returns the current CPUs features.
+static const char *GetCurrentPowerPCCPU() {
host_basic_info_data_t hostInfo;
mach_msg_type_number_t infoCount;
infoCount = HOST_BASIC_INFO_COUNT;
host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&hostInfo,
&infoCount);
+
+ if (hostInfo.cpu_type != CPU_TYPE_POWERPC) return "generic";
+
+ switch(hostInfo.cpu_subtype) {
+ case CPU_SUBTYPE_POWERPC_601: return "601";
+ case CPU_SUBTYPE_POWERPC_602: return "602";
+ case CPU_SUBTYPE_POWERPC_603: return "603";
+ case CPU_SUBTYPE_POWERPC_603e: return "603e";
+ case CPU_SUBTYPE_POWERPC_603ev: return "603ev";
+ case CPU_SUBTYPE_POWERPC_604: return "604";
+ case CPU_SUBTYPE_POWERPC_604e: return "604e";
+ case CPU_SUBTYPE_POWERPC_620: return "620";
+ case CPU_SUBTYPE_POWERPC_750: return "750";
+ case CPU_SUBTYPE_POWERPC_7400: return "7400";
+ case CPU_SUBTYPE_POWERPC_7450: return "7450";
+ case CPU_SUBTYPE_POWERPC_970: return "970";
+ default: ;
+ }
- return ((hostInfo.cpu_type == CPU_TYPE_POWERPC) &&
- (hostInfo.cpu_subtype == CPU_SUBTYPE_POWERPC_970));
-}
+ return "generic";
+}
#endif
-PPCSubtarget::PPCSubtarget(const Module &M)
+PPCSubtarget::PPCSubtarget(const Module &M, const std::string &FS)
: StackAlignment(16), IsGigaProcessor(false), IsAIX(false), IsDarwin(false) {
- // Set the boolean corresponding to the current target triple, or the default
+ // Determine default and user specified characteristics
+ std::string CPU;
+#if defined(__APPLE__)
+ CPU = GetCurrentPowerPCCPU();
+#endif
+ uint32_t Bits =
+ SubtargetFeatures::Parse(FS, CPU,
+ PowerPCSubTypeKV, PowerPCSubTypeKVSize,
+ PowerPCFeatureKV, PowerPCFeatureKVSize);
+ IsGigaProcessor = (Bits & PowerPCFeatureGPUL) != 0;
+
+ // Set the boolean corresponding to the current target triple, or the default
// if one cannot be determined, to true.
const std::string& TT = M.getTargetTriple();
if (TT.length() > 5) {
IsDarwin = TT.find("darwin") != std::string::npos;
-#if defined(__APPLE__)
- IsGigaProcessor = IsGP();
-#endif
} else if (TT.empty()) {
#if defined(_POWER)
IsAIX = true;
#elif defined(__APPLE__)
IsDarwin = true;
- IsGigaProcessor = IsGP();
#endif
}