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subtarget support for CIX and FIX extentions (the only 2 I care about right now)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23569 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2005-09-30 20:24:38 +00:00
parent b78ea801cd
commit ac35cd207f
1 changed files with 35 additions and 2 deletions
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37
lib/Target/Alpha/AlphaSubtarget.cpp
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@ -16,13 +16,46 @@
#include "llvm/Module.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Target/SubtargetFeature.h"
#include "llvm/Support/Debug.h"
using namespace llvm;
//"alphaev67-unknown-linux-gnu"
enum AlphaFeature {
AlphaFeatureCIX = 1 << 0,
AlphaFeatureFIX = 1 << 1,
};
/// Sorted (by key) array of values for CPU subtype.
static const SubtargetFeatureKV AlphaSubTypeKV[] = {
{ "ev56" , "Select the Alpha EV56 processor", 0 },
{ "ev6" , "Select the Alpha EV6 processor", AlphaFeatureFIX },
{ "ev67" , "Select the Alpha EV67 processor", AlphaFeatureFIX | AlphaFeatureCIX },
{ "pca56" , "Select the Alpha PCA56 processor", 0 },
{ "generic", "Select instructions for a generic Alpha processor (EV56)", 0 }
};
/// Length of AlphaSubTypeKV.
static const unsigned AlphaSubTypeKVSize = sizeof(AlphaSubTypeKV)
/ sizeof(SubtargetFeatureKV);
/// Sorted (by key) array of values for CPU features.
static SubtargetFeatureKV AlphaFeatureKV[] = {
{ "FIX" , "Should FIX extentions be used" , AlphaFeatureFIX },
{ "CIX", "Should CIX extentions be used" , AlphaFeatureCIX }
};
/// Length of AlphaFeatureKV.
static const unsigned AlphaFeatureKVSize = sizeof(AlphaFeatureKV)
/ sizeof(SubtargetFeatureKV);
AlphaSubtarget::AlphaSubtarget(const Module &M, const std::string &FS)
:HasF2I(false), HasCT(false)
{
//TODO: figure out host
std::string CPU = "generic";
uint32_t Bits =
SubtargetFeatures::Parse(FS, CPU,
AlphaSubTypeKV, AlphaSubTypeKVSize,
AlphaFeatureKV, AlphaFeatureKVSize);
HasF2I = (Bits & AlphaFeatureFIX) != 0;
HasCT = (Bits & AlphaFeatureCIX) != 0;
}