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add uwtable attribute to functions on windows

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See #516

now we have at least a callstack. we still need updated LLD
to get stack traces.
This commit is contained in:
Andrew Kelley 2017-10-17 01:41:10 -04:00
parent 5866032e76
commit 0744c83f51
1 changed files with 8 additions and 0 deletions
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8
src/codegen.cpp
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@ -388,6 +388,12 @@ static LLVMCallConv get_llvm_cc(CodeGen *g, CallingConvention cc) {
zig_unreachable();
}
static void add_uwtable_attr(CodeGen *g, LLVMValueRef fn_val) {
if (g->zig_target.os == ZigLLVM_Win32) {
addLLVMFnAttr(fn_val, "uwtable");
}
}
static LLVMValueRef fn_llvm_value(CodeGen *g, FnTableEntry *fn_table_entry) {
if (fn_table_entry->llvm_value)
return fn_table_entry->llvm_value;
@ -476,6 +482,7 @@ static LLVMValueRef fn_llvm_value(CodeGen *g, FnTableEntry *fn_table_entry) {
}
addLLVMFnAttr(fn_table_entry->llvm_value, "nounwind");
add_uwtable_attr(g, fn_table_entry->llvm_value);
addLLVMFnAttr(fn_table_entry->llvm_value, "nobuiltin");
if (g->build_mode == BuildModeDebug && fn_table_entry->fn_inline != FnInlineAlways) {
ZigLLVMAddFunctionAttr(fn_table_entry->llvm_value, "no-frame-pointer-elim", "true");
@ -885,6 +892,7 @@ static LLVMValueRef get_safety_crash_err_fn(CodeGen *g) {
LLVMSetLinkage(fn_val, LLVMInternalLinkage);
LLVMSetFunctionCallConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
addLLVMFnAttr(fn_val, "nounwind");
add_uwtable_attr(g, fn_val);
if (g->build_mode == BuildModeDebug) {
ZigLLVMAddFunctionAttr(fn_val, "no-frame-pointer-elim", "true");
ZigLLVMAddFunctionAttr(fn_val, "no-frame-pointer-elim-non-leaf", nullptr);