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Improve debug symbol retention with -debug -opt:0

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This commit is contained in:
gingerBill
2021-12-11 17:42:58 +00:00
parent 3257454209
commit 08a081ed45
1 changed files with 11 additions and 15 deletions
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26
src/llvm_backend_opt.cpp
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@@ -48,12 +48,6 @@ LLVMBool lb_must_preserve_predicate_callback(LLVMValueRef value, void *user_data
return LLVMIsAAllocaInst(value) != nullptr;
}
void lb_add_must_preserve_predicate_pass(lbModule *m, LLVMPassManagerRef fpm, i32 optimization_level) {
if (false && optimization_level == 0 && m->debug_builder) {
// LLVMAddInternalizePassWithMustPreservePredicate(fpm, m, lb_must_preserve_predicate_callback);
}
}
#if LLVM_VERSION_MAJOR < 12
#define LLVM_ADD_CONSTANT_VALUE_PASS(fpm) LLVMAddConstantPropagationPass(fpm)
@@ -61,7 +55,10 @@ void lb_add_must_preserve_predicate_pass(lbModule *m, LLVMPassManagerRef fpm, i3
#define LLVM_ADD_CONSTANT_VALUE_PASS(fpm)
#endif
void lb_basic_populate_function_pass_manager(LLVMPassManagerRef fpm) {
void lb_basic_populate_function_pass_manager(LLVMPassManagerRef fpm, i32 optimization_level) {
if (optimization_level == 0 && build_context.ODIN_DEBUG) {
return;
}
LLVMAddPromoteMemoryToRegisterPass(fpm);
LLVMAddMergedLoadStoreMotionPass(fpm);
LLVM_ADD_CONSTANT_VALUE_PASS(fpm);
@@ -78,14 +75,12 @@ void lb_populate_function_pass_manager(lbModule *m, LLVMPassManagerRef fpm, bool
// TODO(bill): Determine which opt definitions should exist in the first place
optimization_level = gb_clamp(optimization_level, 0, 2);
lb_add_must_preserve_predicate_pass(m, fpm, optimization_level);
if (ignore_memcpy_pass) {
lb_basic_populate_function_pass_manager(fpm);
lb_basic_populate_function_pass_manager(fpm, optimization_level);
return;
} else if (optimization_level == 0) {
LLVMAddMemCpyOptPass(fpm);
lb_basic_populate_function_pass_manager(fpm);
lb_basic_populate_function_pass_manager(fpm, optimization_level);
return;
}
@@ -96,7 +91,7 @@ void lb_populate_function_pass_manager(lbModule *m, LLVMPassManagerRef fpm, bool
LLVMPassManagerBuilderPopulateFunctionPassManager(pmb, fpm);
#else
LLVMAddMemCpyOptPass(fpm);
lb_basic_populate_function_pass_manager(fpm);
lb_basic_populate_function_pass_manager(fpm, optimization_level);
LLVMAddSCCPPass(fpm);
@@ -114,11 +109,9 @@ void lb_populate_function_pass_manager_specific(lbModule *m, LLVMPassManagerRef
// TODO(bill): Determine which opt definitions should exist in the first place
optimization_level = gb_clamp(optimization_level, 0, 2);
lb_add_must_preserve_predicate_pass(m, fpm, optimization_level);
if (optimization_level == 0) {
LLVMAddMemCpyOptPass(fpm);
lb_basic_populate_function_pass_manager(fpm);
lb_basic_populate_function_pass_manager(fpm, optimization_level);
return;
}
@@ -191,6 +184,9 @@ void lb_populate_module_pass_manager(LLVMTargetMachineRef target_machine, LLVMPa
// NOTE(bill): Treat -opt:3 as if it was -opt:2
// TODO(bill): Determine which opt definitions should exist in the first place
optimization_level = gb_clamp(optimization_level, 0, 2);
if (optimization_level == 0 && build_context.ODIN_DEBUG) {
return;
}
LLVMAddAlwaysInlinerPass(mpm);
LLVMAddStripDeadPrototypesPass(mpm);