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lightweight simplification and optimization passes in -o:minimal

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This commit is contained in:
jakubtomsu
2026-04-11 11:14:28 +02:00
parent c36bd4f858
commit e97f73e4aa
3 changed files with 12 additions and 8 deletions
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2
src/build_settings.cpp
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@@ -578,7 +578,7 @@ struct BuildContext {
bool internal_by_value;
bool internal_weak_monomorphization;
bool internal_ignore_llvm_verification;
bool internal_llvm_mem2reg;
bool internal_llvm_no_sroa;
bool enable_rvo;

10
src/llvm_backend_passes.cpp
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@@ -3,9 +3,13 @@
array_add(&passes, "function(annotation-remarks)");
break;
case 0:
array_add(&passes, "always-inline");
if (build_context.internal_llvm_mem2reg) {
array_add(&passes, "function<eager-inv>(mem2reg)");
if (build_context.internal_llvm_no_sroa) {
// Old -o:minimal behavior
array_add(&passes, "always-inline");
} else {
array_add(&passes, "function<eager-inv>(sroa,early-cse)");
array_add(&passes, "always-inline");
array_add(&passes, "function<eager-inv>(sroa,instcombine<max-iterations=1;no-verify-fixpoint>,simplifycfg)");
}
array_add(&passes, "function(annotation-remarks)");
break;

8
src/main.cpp
View File

@@ -402,7 +402,7 @@ enum BuildFlagKind {
BuildFlag_InternalByValue,
BuildFlag_InternalWeakMonomorphization,
BuildFlag_InternalLLVMVerification,
BuildFlag_InternalLLVMMem2Reg,
BuildFlag_InternalLLVMNoSROA,
BuildFlag_InternalEnableRVO,
BuildFlag_Sanitize,
@@ -634,7 +634,7 @@ gb_internal bool parse_build_flags(Array<String> args) {
add_flag(&build_flags, BuildFlag_InternalByValue, str_lit("internal-by-value"), BuildFlagParam_None, Command_all);
add_flag(&build_flags, BuildFlag_InternalWeakMonomorphization, str_lit("internal-weak-monomorphization"), BuildFlagParam_None, Command_all);
add_flag(&build_flags, BuildFlag_InternalLLVMVerification, str_lit("internal-ignore-llvm-verification"), BuildFlagParam_None, Command_all);
add_flag(&build_flags, BuildFlag_InternalLLVMMem2Reg, str_lit("internal-llvm-mem2reg"), BuildFlagParam_None, Command_all);
add_flag(&build_flags, BuildFlag_InternalLLVMNoSROA, str_lit("internal-llvm-no-sroa"), BuildFlagParam_None, Command_all);
add_flag(&build_flags, BuildFlag_InternalEnableRVO, str_lit("internal-enable-rvo"), BuildFlagParam_None, Command_all);
@@ -1628,8 +1628,8 @@ gb_internal bool parse_build_flags(Array<String> args) {
case BuildFlag_InternalLLVMVerification:
build_context.internal_ignore_llvm_verification = true;
break;
case BuildFlag_InternalLLVMMem2Reg:
build_context.internal_llvm_mem2reg = true;
case BuildFlag_InternalLLVMNoSROA:
build_context.internal_llvm_no_sroa = true;
break;
case BuildFlag_InternalEnableRVO:
build_context.enable_rvo = true;