llvm-project/clang/test/CodeGenCXX/microsoft-abi-non-virtual-base-ordering.cpp

// RUN: %clang_cc1 -fno-rtti -emit-llvm -triple=i686-pc-win32 -o - %s  2>/dev/null | FileCheck %s
// RUN: %clang_cc1 -fno-rtti -emit-llvm -triple=x86_64-pc-win32 -o - %s  2>/dev/null | FileCheck %s

struct C0 { int a; };
struct C1 { int a; virtual void C1M() {} };
struct C2 { int a; virtual void C2M() {} };
struct C3 : C0, C1, C2 {} a;

// Check to see that both C1 and C2 get laid out before C0 does.
// CHECK: %struct.C3 = type { %struct.C1, %struct.C2, %struct.C0 }
Remove the -cxx-abi command-line flag. This makes the C++ ABI depend entirely on the target: MS ABI for -win32 triples, Itanium otherwise. It's no longer possible to do weird combinations. To be able to run a test with a specific ABI without constraining it to a specific triple, new substitutions are added to lit: %itanium_abi_triple and %ms_abi_triple can be used to get the current target triple adjusted to the desired ABI. For example, if the test suite is running with the i686-pc-win32 target, %itanium_abi_triple will expand to i686-pc-mingw32. Differential Revision: http://llvm-reviews.chandlerc.com/D2545 llvm-svn: 199250 2014-01-14 19:35:09 +00:00			`// RUN: %clang_cc1 -fno-rtti -emit-llvm -triple=i686-pc-win32 -o - %s 2>/dev/null \| FileCheck %s`
			`// RUN: %clang_cc1 -fno-rtti -emit-llvm -triple=x86_64-pc-win32 -o - %s 2>/dev/null \| FileCheck %s`
[ms-abi] Fixing CGRecordLayoutBuilder w.r.t. MS NonVirutalBase Layout The MS abi lays out all non-virtual bases with leading vfptrs before laying out non-virutal bases without vfptrs. This guarantees that the primary base is laid out first. r198818 fixed RecordLayoutBuilder to produce compatiable layouts. This patch fixes CGRecordLayoutBuilder to be able to consume those layouts and produce meaningful output without tripping any asserts about assumed incoming layout. A test case is included that shows CGRecordLayoutBuilder in fact produces output in the compatiable order. llvm-svn: 198900 2014-01-09 23:51:31 +00:00
			`struct C0 { int a; };`
			`struct C1 { int a; virtual void C1M() {} };`
			`struct C2 { int a; virtual void C2M() {} };`
			`struct C3 : C0, C1, C2 {} a;`

			`// Check to see that both C1 and C2 get laid out before C0 does.`
			`// CHECK: %struct.C3 = type { %struct.C1, %struct.C2, %struct.C0 }`