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Add intrinsics.mem_zero

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gingerBill
2021-05-24 22:39:27 +01:00
parent 44b6e7c45d
commit 0c46d06e63
4 changed files with 64 additions and 2 deletions
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src/llvm_backend.cpp
+14 -2
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@@ -9478,8 +9478,6 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
case BuiltinProc_mem_copy:
case BuiltinProc_mem_copy_non_overlapping:
{
lbValue dst = lb_build_expr(p, ce->args[0]);
lbValue src = lb_build_expr(p, ce->args[1]);
lbValue len = lb_build_expr(p, ce->args[2]);
@@ -9513,6 +9511,20 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
return {};
}
case BuiltinProc_mem_zero:
{
lbValue ptr = lb_build_expr(p, ce->args[0]);
lbValue len = lb_build_expr(p, ce->args[1]);
ptr = lb_emit_conv(p, ptr, t_rawptr);
len = lb_emit_conv(p, len, t_int);
LLVMTypeRef type_i8 = LLVMInt8TypeInContext(p->module->ctx);
unsigned alignment = 1;
LLVMBuildMemSet(p->builder, ptr.value, LLVMConstNull(type_i8), len.value, alignment);
return {};
}
case BuiltinProc_atomic_fence:
LLVMBuildFence(p->builder, LLVMAtomicOrderingSequentiallyConsistent, false, "");