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llvm-project/clang/test/CodeGenCXX/linetable-virtual-variadic.cpp

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Use musttail for variadic method thunks when possible This avoids cloning variadic virtual methods when the target supports musttail and the return type is not covariant. I think we never implemented this previously because it doesn't handle the covariant case. But, in the MS ABI, there are some cases where vtable thunks must be emitted even when the variadic method defintion is not available, so it looks like we need to implement this. Do it for both ABIs, since it's a nice size improvement and simplification for Itanium. Emit an error when emitting thunks for variadic methods with a covariant return type. This case is essentially not implementable unless the ABI provides a way to perfectly forward variadic arguments without a tail call. Fixes PR43173. Differential Revision: https://reviews.llvm.org/D67028 llvm-svn: 371269
2019-09-07 06:55:26 +08:00
// Sparc64 is used because AArch64 and X86_64 would both use musttail.
// RUN: %clang_cc1 -triple sparc64-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - | FileCheck %s
// RUN: %clang_cc1 -triple sparc64-linux-gnu -emit-llvm -debug-info-kind=line-directives-only %s -o - | FileCheck %s
CodeGenCXX: Test that linetables work with variadic virtual thunks Add a frontend test for PR22929, which was fixed by LLVM r232449. Besides the crash test, check that the `!dbg` attachment is sane since its presence was the trigger. llvm-svn: 232450
2015-03-17 09:19:01 +08:00
// Crasher for PR22929.
class Base {
virtual void VariadicFunction(...);
};
class Derived : public virtual Base {
virtual void VariadicFunction(...);
};
void Derived::VariadicFunction(...) { }
Revert "[CodeGenModule] Assume dso_local for -fpic -fno-semantic-interposition" This reverts commit 789a46f2d742e11edaade28cb59a0f4d2a1d770e. Accidentally committed.
2020-02-04 02:09:39 +08:00
// CHECK: define void @_ZN7Derived16VariadicFunctionEz({{.*}} !dbg ![[SP:[0-9]+]]
CodeGenCXX: Test that linetables work with variadic virtual thunks Add a frontend test for PR22929, which was fixed by LLVM r232449. Besides the crash test, check that the `!dbg` attachment is sane since its presence was the trigger. llvm-svn: 232450
2015-03-17 09:19:01 +08:00
// CHECK: ret void, !dbg ![[LOC:[0-9]+]]
Revert "[CodeGenModule] Assume dso_local for -fpic -fno-semantic-interposition" This reverts commit 789a46f2d742e11edaade28cb59a0f4d2a1d770e. Accidentally committed.
2020-02-04 02:09:39 +08:00
// CHECK: define void @_ZT{{.+}}N7Derived16VariadicFunctionEz({{.*}} !dbg ![[SP_I:[0-9]+]]
Update testcase for upstream LLVM changes (r302469). llvm-svn: 302577
2017-05-10 03:47:41 +08:00
// CHECK: ret void, !dbg ![[LOC_I:[0-9]+]]
CodeGenCXX: Test that linetables work with variadic virtual thunks Add a frontend test for PR22929, which was fixed by LLVM r232449. Besides the crash test, check that the `!dbg` attachment is sane since its presence was the trigger. llvm-svn: 232450
2015-03-17 09:19:01 +08:00
//
CodeGen: Update for debug info API change. Differential Revision: http://reviews.llvm.org/D14266 llvm-svn: 252220
2015-11-06 06:04:14 +08:00
// CHECK: ![[SP]] = distinct !DISubprogram(name: "VariadicFunction"
[CodeGen] Revert commit https://reviews.llvm.org/rL342717 llvm-svn: 342912
2018-09-25 02:24:18 +08:00
// CHECK: ![[LOC]] = !DILocation({{.*}}scope: ![[SP]])
Update testcase for upstream LLVM changes (r302469). llvm-svn: 302577
2017-05-10 03:47:41 +08:00
// CHECK: ![[SP_I]] = distinct !DISubprogram(name: "VariadicFunction"
[CodeGen] Revert commit https://reviews.llvm.org/rL342717 llvm-svn: 342912
2018-09-25 02:24:18 +08:00
// CHECK: ![[LOC_I]] = !DILocation({{.*}}scope: ![[SP_I]])