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audit alignment for functions 

see #37
master
Andrew Kelley 2017-08-26 15:20:39 -04:00
parent 95aed8c457
commit 2a49c876be
1 changed files with 10 additions and 0 deletions
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10
src/codegen.cpp
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@ -376,6 +376,7 @@ static LLVMValueRef fn_llvm_value(CodeGen *g, FnTableEntry *fn_table_entry) {
}
fn_table_entry->llvm_name = LLVMGetValueName(fn_table_entry->llvm_value);
// TODO this is for testing windows DLL stuff
//if (buf_eql_str(&fn_table_entry->symbol_name, "ExitProcess") ||
// buf_eql_str(&fn_table_entry->symbol_name, "GetConsoleMode") ||
// buf_eql_str(&fn_table_entry->symbol_name, "GetStdHandle") ||
@ -448,6 +449,12 @@ static LLVMValueRef fn_llvm_value(CodeGen *g, FnTableEntry *fn_table_entry) {
}
if (fn_table_entry->alignment) {
LLVMSetAlignment(fn_table_entry->llvm_value, (unsigned)fn_table_entry->alignment);
} else if (external_linkage) {
LLVMSetAlignment(fn_table_entry->llvm_value,
LLVMABIAlignmentOfType(g->target_data_ref, fn_table_entry->type_entry->data.fn.raw_type_ref));
} else {
LLVMSetAlignment(fn_table_entry->llvm_value,
LLVMPreferredAlignmentOfType(g->target_data_ref, fn_table_entry->type_entry->data.fn.raw_type_ref));
}
return fn_table_entry->llvm_value;
@ -596,6 +603,7 @@ static LLVMValueRef get_floor_ceil_fn(CodeGen *g, TypeTableEntry *type_entry, Zi
sprintf(fn_name, "llvm.%s.f%" ZIG_PRI_usize "", name, type_entry->data.floating.bit_count);
LLVMTypeRef fn_type = LLVMFunctionType(type_entry->type_ref, &type_entry->type_ref, 1, false);
LLVMValueRef fn_val = LLVMAddFunction(g->module, fn_name, fn_type);
assert(LLVMGetIntrinsicID(fn_val));
g->llvm_fn_table.put(key, fn_val);
return fn_val;
@ -830,6 +838,7 @@ static LLVMValueRef get_safety_crash_err_fn(CodeGen *g) {
ZigLLVMAddFunctionAttr(fn_val, "no-frame-pointer-elim", "true");
ZigLLVMAddFunctionAttr(fn_val, "no-frame-pointer-elim-non-leaf", nullptr);
}
LLVMSetAlignment(fn_val, LLVMPreferredAlignmentOfType(g->target_data_ref, fn_type_ref));
LLVMBasicBlockRef entry_block = LLVMAppendBasicBlock(fn_val, "Entry");
LLVMBasicBlockRef prev_block = LLVMGetInsertBlock(g->builder);
@ -2478,6 +2487,7 @@ static LLVMValueRef get_int_builtin_fn(CodeGen *g, TypeTableEntry *int_type, Bui
};
LLVMTypeRef fn_type = LLVMFunctionType(int_type->type_ref, param_types, 2, false);
LLVMValueRef fn_val = LLVMAddFunction(g->module, llvm_name, fn_type);
assert(LLVMGetIntrinsicID(fn_val));
g->llvm_fn_table.put(key, fn_val);