From 84f9fb706b90d97e7e52819af8388f64e38970e3 Mon Sep 17 00:00:00 2001 From: gingerBill Date: Wed, 10 Aug 2022 11:36:25 +0100 Subject: General clean up of LLVM*GEP2 code --- src/llvm_backend_general.cpp | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) (limited to 'src/llvm_backend_general.cpp') diff --git a/src/llvm_backend_general.cpp b/src/llvm_backend_general.cpp index 7138ac191..082163b2f 100644 --- a/src/llvm_backend_general.cpp +++ b/src/llvm_backend_general.cpp @@ -212,6 +212,45 @@ void lb_loop_end(lbProcedure *p, lbLoopData const &data) { } +// This emits a GEP at 0, index +lbValue lb_emit_epi(lbProcedure *p, lbValue const &value, isize index) { + GB_ASSERT(is_type_pointer(value.type)); + Type *type = type_deref(value.type); + + LLVMValueRef indices[2] = { + LLVMConstInt(lb_type(p->module, t_int), 0, false), + LLVMConstInt(lb_type(p->module, t_int), cast(unsigned long long)index, false), + }; + LLVMTypeRef llvm_type = lb_type(p->module, type); + lbValue res = {}; + Type *ptr = base_array_type(type); + res.type = alloc_type_pointer(ptr); + if (LLVMIsConstant(value.value)) { + res.value = LLVMConstGEP2(llvm_type, value.value, indices, gb_count_of(indices)); + } else { + res.value = LLVMBuildGEP2(p->builder, llvm_type, value.value, indices, gb_count_of(indices), ""); + } + return res; +} +// This emits a GEP at 0, index +lbValue lb_emit_epi(lbModule *m, lbValue const &value, isize index) { + GB_ASSERT(is_type_pointer(value.type)); + GB_ASSERT(LLVMIsConstant(value.value)); + Type *type = type_deref(value.type); + + LLVMValueRef indices[2] = { + LLVMConstInt(lb_type(m, t_int), 0, false), + LLVMConstInt(lb_type(m, t_int), cast(unsigned long long)index, false), + }; + lbValue res = {}; + Type *ptr = base_array_type(type); + res.type = alloc_type_pointer(ptr); + res.value = LLVMConstGEP2(lb_type(m, type), value.value, indices, gb_count_of(indices)); + return res; +} + + + LLVMValueRef llvm_zero(lbModule *m) { return LLVMConstInt(lb_type(m, t_int), 0, false); } -- cgit v1.2.3