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Add support for --mcpu native #10264

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merged 4 commits into from
Jan 18, 2021
Merged

Add support for --mcpu native #10264

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d6c1201
Add support for --mcpu native
BlobCodes Jan 17, 2021
69a3235
Run crystal tool format
BlobCodes Jan 17, 2021
9dd3db9
Add documentation for --mcpu default
BlobCodes Jan 17, 2021
8e98da0
Actually add doumentation for --mcpu native
BlobCodes Jan 17, 2021
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6 changes: 5 additions & 1 deletion src/compiler/crystal/command.cr
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Expand Up @@ -387,7 +387,11 @@ class Crystal::Command
link_flags << some_link_flags
end
opts.on("--mcpu CPU", "Target specific cpu type") do |cpu|
compiler.mcpu = cpu
if cpu == "native"
compiler.mcpu = LLVM.host_cpu_name
else
compiler.mcpu = cpu
end
end
opts.on("--mattr CPU", "Target specific features") do |features|
compiler.mattr = features
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4 changes: 4 additions & 0 deletions src/llvm.cr
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Expand Up @@ -83,6 +83,10 @@ module LLVM
end
end

def self.host_cpu_name : String
String.new LibLLVM.get_host_cpu_name
end

def self.normalize_triple(triple : String)
normalized = LibLLVMExt.normalize_target_triple(triple)
normalized = LLVM.string_and_dispose(normalized)
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1 change: 1 addition & 0 deletions src/llvm/lib_llvm.cr
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Expand Up @@ -183,6 +183,7 @@ lib LibLLVM
fun get_named_function = LLVMGetNamedFunction(mod : ModuleRef, name : UInt8*) : ValueRef
fun get_named_global = LLVMGetNamedGlobal(mod : ModuleRef, name : UInt8*) : ValueRef
fun get_count_params = LLVMCountParams(fn : ValueRef) : UInt
fun get_host_cpu_name = LLVMGetHostCPUName : UInt8*
fun get_param = LLVMGetParam(fn : ValueRef, index : Int32) : ValueRef
fun get_param_types = LLVMGetParamTypes(function_type : TypeRef, dest : TypeRef*)
fun get_params = LLVMGetParams(fn : ValueRef, params : ValueRef*)
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