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InitMCProcessor

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llvm-svn: 164066
This commit is contained in:
Andrew Trick 2012-09-17 22:19:12 +00:00
parent 3d3f796f3f
commit 9400ee3c79
3 changed files with 20 additions and 18 deletions
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6
include/llvm/MC/MCSubtargetInfo.h
View File

@ -68,9 +68,9 @@ public:
return FeatureBits;
}
/// ReInitMCSubtargetInfo - Change CPU (and optionally supplemented with
/// feature string), recompute and return feature bits.
uint64_t ReInitMCSubtargetInfo(StringRef CPU, StringRef FS);
/// InitMCProcessorInfo - Set or change the CPU (optionally supplemented with
/// feature string). Recompute feature bits and scheduling model.
void InitMCProcessorInfo(StringRef CPU, StringRef FS);
/// ToggleFeature - Toggle a feature and returns the re-computed feature
/// bits. This version does not change the implied bits.

29
lib/MC/MCSubtargetInfo.cpp
View File

@ -19,6 +19,20 @@ using namespace llvm;
MCSchedModel MCSchedModel::DefaultSchedModel; // For unknown processors.
/// ReInitMCSubtargetInfo - Set or chaing the CPU (optionally supplemented
/// with feature string). Recompute feature bits and scheduling model.
void
MCSubtargetInfo::InitMCProcessorInfo(StringRef CPU, StringRef FS) {
SubtargetFeatures Features(FS);
FeatureBits = Features.getFeatureBits(CPU, ProcDesc, NumProcs,
ProcFeatures, NumFeatures);
if (!CPU.empty())
CPUSchedModel = getSchedModelForCPU(CPU);
else
CPUSchedModel = &MCSchedModel::DefaultSchedModel;
}
void
MCSubtargetInfo::InitMCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS,
const SubtargetFeatureKV *PF,
@ -45,20 +59,7 @@ MCSubtargetInfo::InitMCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS,
NumFeatures = NF;
NumProcs = NP;
SubtargetFeatures Features(FS);
FeatureBits = Features.getFeatureBits(CPU, ProcDesc, NumProcs,
ProcFeatures, NumFeatures);
CPUSchedModel = getSchedModelForCPU(CPU);
}
/// ReInitMCSubtargetInfo - Change CPU (and optionally supplemented with
/// feature string) and recompute feature bits.
uint64_t MCSubtargetInfo::ReInitMCSubtargetInfo(StringRef CPU, StringRef FS) {
SubtargetFeatures Features(FS);
FeatureBits = Features.getFeatureBits(CPU, ProcDesc, NumProcs,
ProcFeatures, NumFeatures);
return FeatureBits;
InitMCProcessorInfo(CPU, FS);
}
/// ToggleFeature - Toggle a feature and returns the re-computed feature

3
utils/TableGen/SubtargetEmitter.cpp
View File

@ -1213,7 +1213,8 @@ void SubtargetEmitter::ParseFeaturesFunction(raw_ostream &OS,
return;
}
OS << " uint64_t Bits = ReInitMCSubtargetInfo(CPU, FS);\n";
OS << " InitMCProcessorInfo(CPU, FS);\n"
<< " uint64_t Bits = getFeatureBits();\n";
for (unsigned i = 0; i < Features.size(); i++) {
// Next record