diff options
Diffstat (limited to 'src/codegen/ssa.cpp')
| -rw-r--r-- | src/codegen/ssa.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/codegen/ssa.cpp b/src/codegen/ssa.cpp index 3df8cbd81..7a0c587c5 100644 --- a/src/codegen/ssa.cpp +++ b/src/codegen/ssa.cpp @@ -53,6 +53,7 @@ struct ssaProcedure { ssaTargetList * target_list; }; +#define SSA_STARTUP_RUNTIME_PROC_NAME "__$startup_runtime" #define SSA_INSTR_KINDS \ @@ -73,6 +74,7 @@ struct ssaProcedure { SSA_INSTR_KIND(ExtractElement), \ SSA_INSTR_KIND(InsertElement), \ SSA_INSTR_KIND(ShuffleVector), \ + SSA_INSTR_KIND(StartupRuntime), \ SSA_INSTR_KIND(Count), enum ssaInstrKind { @@ -192,6 +194,8 @@ struct ssaInstr { ssaValue *elem; ssaValue *index; } insert_element; + + struct {} startup_runtime; }; }; @@ -890,6 +894,7 @@ void ssa_end_procedure_body(ssaProcedure *proc) { case ssaInstr_Ret: case ssaInstr_Unreachable: case ssaInstr_CopyMemory: + case ssaInstr_StartupRuntime: continue; case ssaInstr_Call: if (instr->call.type == NULL) { @@ -2340,6 +2345,26 @@ void ssa_build_stmt(ssaProcedure *proc, AstNode *node) { } } + +void ssa_emit_startup_runtime(ssaProcedure *proc) { + GB_ASSERT(proc->parent == NULL && are_strings_equal(proc->name, make_string("main"))); + + ssaValue *v = ssa_alloc_instr(proc->module->allocator, ssaInstr_StartupRuntime); + if (proc->curr_block) { + gb_array_append(proc->curr_block->values, v); + } + ssa_emit(proc, v); +} + +void ssa_insert_code_before_proc(ssaProcedure* proc, ssaProcedure *parent) { + if (parent == NULL) { + if (are_strings_equal(proc->name, make_string("main"))) { + ssa_emit_startup_runtime(proc); + } + } +} + + void ssa_build_proc(ssaValue *value, ssaProcedure *parent) { ssaProcedure *proc = &value->proc; @@ -2347,6 +2372,7 @@ void ssa_build_proc(ssaValue *value, ssaProcedure *parent) { if (proc->body != NULL) { ssa_begin_procedure_body(proc); + ssa_insert_code_before_proc(proc, parent); ssa_build_stmt(proc, proc->body); ssa_end_procedure_body(proc); } |