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Use the LLVM C++ API

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This commit is contained in:
LemonBoy
2019-12-31 17:54:12 +01:00
parent e99209baf0
commit 435528a7c5
3 changed files with 142 additions and 54 deletions
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92
src/codegen.cpp
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@@ -262,76 +262,66 @@ static const char *get_mangled_name(CodeGen *g, const char *original_name, bool
}
}
static LLVMCallConv get_llvm_cc(CodeGen *g, CallingConvention cc) {
static ZigLLVM_CallingConv get_llvm_cc(CodeGen *g, CallingConvention cc) {
switch (cc) {
case CallingConventionUnspecified: return LLVMFastCallConv;
case CallingConventionC: return LLVMCCallConv;
case CallingConventionUnspecified:
return ZigLLVM_Fast;
case CallingConventionC:
return ZigLLVM_C;
case CallingConventionCold:
// cold calling convention only works on x86.
if (g->zig_target->arch == ZigLLVM_x86 ||
g->zig_target->arch == ZigLLVM_x86_64)
{
// cold calling convention is not supported on windows
if (g->zig_target->os == OsWindows) {
return LLVMCCallConv;
} else {
return LLVMColdCallConv;
}
} else {
return LLVMCCallConv;
}
break;
if ((g->zig_target->arch == ZigLLVM_x86 ||
g->zig_target->arch == ZigLLVM_x86_64) &&
g->zig_target->os != OsWindows)
return ZigLLVM_Cold;
return ZigLLVM_C;
case CallingConventionNaked:
zig_unreachable();
case CallingConventionStdcall:
if (g->zig_target->arch == ZigLLVM_x86)
return LLVMX86StdcallCallConv;
return LLVMCCallConv;
return ZigLLVM_X86_StdCall;
return ZigLLVM_C;
case CallingConventionFastcall:
if (g->zig_target->arch == ZigLLVM_x86)
return LLVMX86FastcallCallConv;
return LLVMCCallConv;
return ZigLLVM_X86_FastCall;
return ZigLLVM_C;
case CallingConventionVectorcall:
if (g->zig_target->arch == ZigLLVM_x86)
return LLVMX86VectorCallCallConv;
// XXX Enable this when the C API exports this enum member too
#if 0
return ZigLLVM_X86_VectorCall;
if (target_is_arm(g->zig_target) &&
target_arch_pointer_bit_width(g->zig_target->arch) == 64)
return LLVMAARCH64VectorCallCallConv;
#endif
return LLVMCCallConv;
return ZigLLVM_AArch64_VectorCall;
return ZigLLVM_C;
case CallingConventionThiscall:
if (g->zig_target->arch == ZigLLVM_x86)
return LLVMX86ThisCallCallConv;
return LLVMCCallConv;
return ZigLLVM_X86_ThisCall;
return ZigLLVM_C;
case CallingConventionAsync:
return LLVMFastCallConv;
return ZigLLVM_Fast;
case CallingConventionAPCS:
if (target_is_arm(g->zig_target))
return LLVMARMAPCSCallConv;
return LLVMCCallConv;
return ZigLLVM_ARM_APCS;
return ZigLLVM_C;
case CallingConventionAAPCS:
if (target_is_arm(g->zig_target))
return LLVMARMAAPCSCallConv;
return LLVMCCallConv;
return ZigLLVM_ARM_AAPCS;
return ZigLLVM_C;
case CallingConventionAAPCSVFP:
if (target_is_arm(g->zig_target))
return LLVMARMAAPCSVFPCallConv;
return LLVMCCallConv;
return ZigLLVM_ARM_AAPCS_VFP;
return ZigLLVM_C;
case CallingConventionInterrupt:
if (g->zig_target->arch == ZigLLVM_x86 ||
g->zig_target->arch == ZigLLVM_x86_64)
return LLVMX86INTRCallConv;
return ZigLLVM_X86_INTR;
if (g->zig_target->arch == ZigLLVM_avr)
return LLVMAVRINTRCallConv;
return ZigLLVM_AVR_INTR;
if (g->zig_target->arch == ZigLLVM_msp430)
return LLVMMSP430INTRCallConv;
return LLVMCCallConv;
return ZigLLVM_MSP430_INTR;
return ZigLLVM_C;
case CallingConventionSignal:
if (g->zig_target->arch == ZigLLVM_avr)
return LLVMAVRSIGNALCallConv;
return LLVMCCallConv;
return ZigLLVM_AVR_SIGNAL;
return ZigLLVM_C;
}
zig_unreachable();
}
@@ -528,7 +518,7 @@ static LLVMValueRef make_fn_llvm_value(CodeGen *g, ZigFn *fn) {
if (cc == CallingConventionNaked) {
addLLVMFnAttr(llvm_fn, "naked");
} else {
LLVMSetFunctionCallConv(llvm_fn, get_llvm_cc(g, fn_type->data.fn.fn_type_id.cc));
ZigLLVMFunctionSetCallingConv(llvm_fn, get_llvm_cc(g, fn_type->data.fn.fn_type_id.cc));
}
bool want_cold = fn->is_cold || cc == CallingConventionCold;
@@ -1023,7 +1013,7 @@ static void gen_panic(CodeGen *g, LLVMValueRef msg_arg, LLVMValueRef stack_trace
{
assert(g->panic_fn != nullptr);
LLVMValueRef fn_val = fn_llvm_value(g, g->panic_fn);
LLVMCallConv llvm_cc = get_llvm_cc(g, g->panic_fn->type_entry->data.fn.fn_type_id.cc);
ZigLLVM_CallingConv llvm_cc = get_llvm_cc(g, g->panic_fn->type_entry->data.fn.fn_type_id.cc);
if (stack_trace_arg == nullptr) {
stack_trace_arg = LLVMConstNull(get_llvm_type(g, ptr_to_stack_trace_type(g)));
}
@@ -1134,7 +1124,7 @@ static LLVMValueRef get_add_error_return_trace_addr_fn(CodeGen *g) {
LLVMValueRef fn_val = LLVMAddFunction(g->module, fn_name, fn_type_ref);
addLLVMFnAttr(fn_val, "alwaysinline");
LLVMSetLinkage(fn_val, LLVMInternalLinkage);
LLVMSetFunctionCallConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
ZigLLVMFunctionSetCallingConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
addLLVMFnAttr(fn_val, "nounwind");
add_uwtable_attr(g, fn_val);
// Error return trace memory is in the stack, which is impossible to be at address 0
@@ -1215,7 +1205,7 @@ static LLVMValueRef get_return_err_fn(CodeGen *g) {
addLLVMFnAttr(fn_val, "noinline"); // so that we can look at return address
addLLVMFnAttr(fn_val, "cold");
LLVMSetLinkage(fn_val, LLVMInternalLinkage);
LLVMSetFunctionCallConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
ZigLLVMFunctionSetCallingConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
addLLVMFnAttr(fn_val, "nounwind");
add_uwtable_attr(g, fn_val);
if (codegen_have_frame_pointer(g)) {
@@ -1299,7 +1289,7 @@ static LLVMValueRef get_safety_crash_err_fn(CodeGen *g) {
addLLVMFnAttr(fn_val, "noreturn");
addLLVMFnAttr(fn_val, "cold");
LLVMSetLinkage(fn_val, LLVMInternalLinkage);
LLVMSetFunctionCallConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
ZigLLVMFunctionSetCallingConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
addLLVMFnAttr(fn_val, "nounwind");
add_uwtable_attr(g, fn_val);
if (codegen_have_frame_pointer(g)) {
@@ -2195,7 +2185,7 @@ static LLVMValueRef get_merge_err_ret_traces_fn_val(CodeGen *g) {
const char *fn_name = get_mangled_name(g, "__zig_merge_error_return_traces", false);
LLVMValueRef fn_val = LLVMAddFunction(g->module, fn_name, fn_type_ref);
LLVMSetLinkage(fn_val, LLVMInternalLinkage);
LLVMSetFunctionCallConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
ZigLLVMFunctionSetCallingConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
addLLVMFnAttr(fn_val, "nounwind");
add_uwtable_attr(g, fn_val);
addLLVMArgAttr(fn_val, (unsigned)0, "noalias");
@@ -2372,7 +2362,7 @@ static LLVMValueRef gen_resume(CodeGen *g, LLVMValueRef fn_val, LLVMValueRef tar
LLVMValueRef arg_val = LLVMConstSub(LLVMConstAllOnes(usize_type_ref),
LLVMConstInt(usize_type_ref, resume_id, false));
LLVMValueRef args[] = {target_frame_ptr, arg_val};
return ZigLLVMBuildCall(g->builder, fn_val, args, 2, LLVMFastCallConv, ZigLLVM_CallAttrAuto, "");
return ZigLLVMBuildCall(g->builder, fn_val, args, 2, ZigLLVM_Fast, ZigLLVM_CallAttrAuto, "");
}
static LLVMBasicBlockRef gen_suspend_begin(CodeGen *g, const char *name_hint) {
@@ -4262,7 +4252,7 @@ static LLVMValueRef ir_render_call(CodeGen *g, IrExecutable *executable, IrInstr
break;
}
LLVMCallConv llvm_cc = get_llvm_cc(g, cc);
ZigLLVM_CallingConv llvm_cc = get_llvm_cc(g, cc);
LLVMValueRef result;
if (callee_is_async) {
@@ -4972,7 +4962,7 @@ static LLVMValueRef get_enum_tag_name_function(CodeGen *g, ZigType *enum_type) {
buf_ptr(buf_sprintf("__zig_tag_name_%s", buf_ptr(&enum_type->name))), false);
LLVMValueRef fn_val = LLVMAddFunction(g->module, fn_name, fn_type_ref);
LLVMSetLinkage(fn_val, LLVMInternalLinkage);
LLVMSetFunctionCallConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
ZigLLVMFunctionSetCallingConv(fn_val, get_llvm_cc(g, CallingConventionUnspecified));
addLLVMFnAttr(fn_val, "nounwind");
add_uwtable_attr(g, fn_val);
if (codegen_have_frame_pointer(g)) {