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coldcc works better

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* Only use Cold Calling Convention on x86
 * Add the cold attribute to functions marked with coldcc
This commit is contained in:
Andrew Kelley
2017-02-06 13:50:19 -05:00
parent 07a71fc322
commit 573f3f8d48
4 changed files with 19 additions and 5 deletions
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3
src/codegen.cpp
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@@ -268,6 +268,9 @@ static LLVMValueRef fn_llvm_value(CodeGen *g, FnTableEntry *fn_table_entry) {
LLVMAddFunctionAttr(fn_table_entry->llvm_value, LLVMNoReturnAttribute);
}
LLVMSetFunctionCallConv(fn_table_entry->llvm_value, fn_type->data.fn.calling_convention);
if (fn_type->data.fn.fn_type_id.is_cold) {
ZigLLVMAddFunctionAttrCold(fn_table_entry->llvm_value);
}
LLVMAddFunctionAttr(fn_table_entry->llvm_value, LLVMNoUnwindAttribute);
if (!g->is_release_build && fn_table_entry->fn_inline != FnInlineAlways) {
ZigLLVMAddFunctionAttr(fn_table_entry->llvm_value, "no-frame-pointer-elim", "true");