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llvm-project/clang/test/CodeGen/struct-copy.c

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[OpaquePtrs][Clang] Add -no-opaque-pointers to tests (NFC) This adds -no-opaque-pointers to clang tests whose output will change when opaque pointers are enabled by default. This is intended to be part of the migration approach described in https://discourse.llvm.org/t/enabling-opaque-pointers-by-default/61322/9. The patch has been produced by replacing %clang_cc1 with %clang_cc1 -no-opaque-pointers for tests that fail with opaque pointers enabled. Worth noting that this doesn't cover all tests, there's a remaining ~40 tests not using %clang_cc1 that will need a followup change. Differential Revision: https://reviews.llvm.org/D123115
2022-04-07 18:03:55 +08:00
// RUN: %clang_cc1 -no-opaque-pointers -emit-llvm %s -o - | FileCheck %s
after going around in circles a few times, finally cave and emit structure copies with memcpy instead of memmove. This matches what GCC does and if it causes a problem with a particular libc we can always fix it with a target hook. llvm-svn: 65699
2009-03-01 02:18:58 +08:00
struct x { int a[100]; };
[NFC] Make test more robust Currently fails on ARMs llvm-svn: 368828
2019-08-14 19:13:10 +08:00
after going around in circles a few times, finally cave and emit structure copies with memcpy instead of memmove. This matches what GCC does and if it causes a problem with a particular libc we can always fix it with a target hook. llvm-svn: 65699
2009-03-01 02:18:58 +08:00
void foo(struct x *P, struct x *Q) {
[NFC] Make test more robust Currently fails on ARMs llvm-svn: 368828
2019-08-14 19:13:10 +08:00
// CHECK-LABEL: @foo(
[NFC] Fix testcase for ARMs llvm-svn: 368863
2019-08-14 23:35:40 +08:00
// CHECK: call void @llvm.memcpy.p0i8.p0i8
after going around in circles a few times, finally cave and emit structure copies with memcpy instead of memmove. This matches what GCC does and if it causes a problem with a particular libc we can always fix it with a target hook. llvm-svn: 65699
2009-03-01 02:18:58 +08:00
*P = *Q;
}
[Codegen] Updated test for D66158 Reviewers: jdoerfert Reviewed By: jdoerfert Subscribers: cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D66173 llvm-svn: 368809
2019-08-14 16:32:31 +08:00
[NFC] Fix testcase for ARMs llvm-svn: 368863
2019-08-14 23:35:40 +08:00
// CHECK: declare void @llvm.memcpy.p0i8.p0i8{{.*}}(i8* noalias nocapture writeonly, i8* noalias nocapture readonly
[Codegen] Updated test for D66158 Reviewers: jdoerfert Reviewed By: jdoerfert Subscribers: cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D66173 llvm-svn: 368809
2019-08-14 16:32:31 +08:00
void bar(struct x *P, struct x *Q) {
[NFC] Make test more robust Currently fails on ARMs llvm-svn: 368828
2019-08-14 19:13:10 +08:00
// CHECK-LABEL: @bar(
[NFC] Fix testcase for ARMs llvm-svn: 368863
2019-08-14 23:35:40 +08:00
// CHECK: call void @llvm.memcpy.p0i8.p0i8
[Codegen] Updated test for D66158 Reviewers: jdoerfert Reviewed By: jdoerfert Subscribers: cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D66173 llvm-svn: 368809
2019-08-14 16:32:31 +08:00
__builtin_memcpy(P, Q, sizeof(struct x));
}