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Add intrinsics.cpu_relax for llvm-api

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This commit is contained in:
gingerBill
2020-10-24 15:08:35 +01:00
parent feeb342c00
commit 5fa488f163
1 changed files with 11 additions and 2 deletions
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src/llvm_backend.cpp
+11 -2
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@@ -7835,8 +7835,17 @@ lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValue const &tv,
}
case BuiltinProc_cpu_relax:
// TODO(bill): BuiltinProc_cpu_relax
// ir_write_str_lit(f, "call void asm sideeffect \"pause\", \"\"()");
{
LLVMTypeRef func_type = LLVMFunctionType(LLVMVoidTypeInContext(p->module->ctx), nullptr, 0, false);
LLVMValueRef the_asm = LLVMGetInlineAsm(func_type,
"pause", 5,
"", 0,
/*HasSideEffects*/true, /*IsAlignStack*/false,
LLVMInlineAsmDialectATT
);
GB_ASSERT(the_asm != nullptr);
LLVMBuildCall2(p->builder, func_type, the_asm, nullptr, 0, "");
}
return {};
case BuiltinProc_atomic_fence: