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Fix X86 subtarget to not overwrite the autodetected features by calling InitMCProcessorInfo right after detecting them. Instead add a new function that only updates the scheduling model and call that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190919 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -72,6 +72,9 @@ public:
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/// feature string). Recompute feature bits and scheduling model.
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void InitMCProcessorInfo(StringRef CPU, StringRef FS);
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/// InitCPUSchedModel - Recompute scheduling model based on CPU.
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void InitCPUSchedModel(StringRef CPU);
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/// ToggleFeature - Toggle a feature and returns the re-computed feature
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/// bits. This version does not change the implied bits.
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uint64_t ToggleFeature(uint64_t FB);
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@ -27,6 +27,11 @@ MCSubtargetInfo::InitMCProcessorInfo(StringRef CPU, StringRef FS) {
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FeatureBits = Features.getFeatureBits(CPU, ProcDesc, NumProcs,
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ProcFeatures, NumFeatures);
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InitCPUSchedModel(CPU);
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}
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void
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MCSubtargetInfo::InitCPUSchedModel(StringRef CPU) {
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if (!CPU.empty())
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CPUSchedModel = getSchedModelForCPU(CPU);
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else
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@ -453,7 +453,7 @@ void X86Subtarget::resetSubtargetFeatures(StringRef CPU, StringRef FS) {
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// CPUName may have been set by the CPU detection code. Make sure the
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// new MCSchedModel is used.
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InitMCProcessorInfo(CPUName, FS);
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InitCPUSchedModel(CPUName);
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if (X86ProcFamily == IntelAtom || X86ProcFamily == IntelSLM)
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PostRAScheduler = true;
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