30 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-unknown-windows -emit-llvm -target-cpu core2 -o - %s | FileCheck %s2 3#define SWIFTCALL __attribute__((swiftcall))4#define OUT __attribute__((swift_indirect_result))5#define ERROR __attribute__((swift_error_result))6#define CONTEXT __attribute__((swift_context))7 8/*****************************************************************************/9/****************************** PARAMETER ABIS *******************************/10/*****************************************************************************/11 12// Swift doesn't use inalloca like windows x86 normally does.13struct NonTrivial {14 NonTrivial();15 NonTrivial(const NonTrivial &);16 int o;17};18 19SWIFTCALL int receiveNonTrivial(NonTrivial o) { return o.o; }20 21// CHECK-LABEL: define dso_local swiftcc noundef i32 @"?receiveNonTrivial@@YSHUNonTrivial@@@Z"(ptr dead_on_return noundef %o)22 23int passNonTrivial() {24 return receiveNonTrivial({});25}26 27// CHECK-LABEL: define dso_local noundef i32 @"?passNonTrivial@@YAHXZ"()28// CHECK-NOT: stacksave29// CHECK: call swiftcc noundef i32 @"?receiveNonTrivial@@YSHUNonTrivial@@@Z"(ptr dead_on_return noundef %{{.*}})30