diff options
Diffstat (limited to 'clang/test/CIR/CodeGen/ptrdiff.cpp')
| -rw-r--r-- | clang/test/CIR/CodeGen/ptrdiff.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/clang/test/CIR/CodeGen/ptrdiff.cpp b/clang/test/CIR/CodeGen/ptrdiff.cpp new file mode 100644 index 0000000..34ba0ff --- /dev/null +++ b/clang/test/CIR/CodeGen/ptrdiff.cpp @@ -0,0 +1,33 @@ +// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir +// RUN: FileCheck --input-file=%t.cir %s --check-prefix=CIR +// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll +// RUN: FileCheck --input-file=%t-cir.ll %s --check-prefix=LLVM +// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o %t.ll +// RUN: FileCheck --input-file=%t.ll %s --check-prefix=OGCG + +typedef unsigned long size_type; + +size_type size(unsigned long *_start, unsigned long *_finish) { + // CIR-LABEL: cir.func dso_local @_Z4sizePmS_ + // CIR: %[[D:.*]] = cir.ptr_diff {{.*}} : !cir.ptr<!u64i> -> !s64i + // CIR: %[[U:.*]] = cir.cast integral %[[D]] : !s64i -> !u64i + // CIR: cir.return {{.*}} : !u64i + + // LLVM-LABEL: define dso_local {{.*}}i64 @_Z4sizePmS_( + // LLVM: %[[IA:.*]] = ptrtoint ptr %{{.*}} to i64 + // LLVM: %[[IB:.*]] = ptrtoint ptr %{{.*}} to i64 + // LLVM: %[[SUB:.*]] = sub i64 %[[IA]], %[[IB]] + // LLVM: %[[Q:.*]] = sdiv exact i64 %[[SUB]], 8 + // LLVM: store i64 %[[Q]], ptr %[[RETADDR:.*]], align + // LLVM: %[[RET:.*]] = load i64, ptr %[[RETADDR]], align + // LLVM: ret i64 %[[RET]] + + // OGCG-LABEL: define dso_local {{.*}}i64 @_Z4sizePmS_( + // OGCG: %[[IA:.*]] = ptrtoint ptr %{{.*}} to i64 + // OGCG: %[[IB:.*]] = ptrtoint ptr %{{.*}} to i64 + // OGCG: %[[SUB:.*]] = sub i64 %[[IA]], %[[IB]] + // OGCG: %[[Q:.*]] = sdiv exact i64 %[[SUB]], 8 + // OGCG: ret i64 %[[Q]] + + return static_cast<size_type>(_finish - _start); +}
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