33 lines · cpp
1// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir2// RUN: FileCheck --input-file=%t.cir %s --check-prefix=CIR3// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll4// RUN: FileCheck --input-file=%t-cir.ll %s --check-prefix=LLVM5// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o %t.ll6// RUN: FileCheck --input-file=%t.ll %s --check-prefix=OGCG7 8typedef unsigned long size_type;9 10size_type size(unsigned long *_start, unsigned long *_finish) {11 // CIR-LABEL: cir.func dso_local @_Z4sizePmS_12 // CIR: %[[D:.*]] = cir.ptr_diff {{.*}} : !cir.ptr<!u64i> -> !s64i13 // CIR: %[[U:.*]] = cir.cast integral %[[D]] : !s64i -> !u64i14 // CIR: cir.return {{.*}} : !u64i15 16 // LLVM-LABEL: define dso_local {{.*}}i64 @_Z4sizePmS_(17 // LLVM: %[[IA:.*]] = ptrtoint ptr %{{.*}} to i6418 // LLVM: %[[IB:.*]] = ptrtoint ptr %{{.*}} to i6419 // LLVM: %[[SUB:.*]] = sub i64 %[[IA]], %[[IB]]20 // LLVM: %[[Q:.*]] = sdiv exact i64 %[[SUB]], 821 // LLVM: store i64 %[[Q]], ptr %[[RETADDR:.*]], align22 // LLVM: %[[RET:.*]] = load i64, ptr %[[RETADDR]], align23 // LLVM: ret i64 %[[RET]]24 25 // OGCG-LABEL: define dso_local {{.*}}i64 @_Z4sizePmS_(26 // OGCG: %[[IA:.*]] = ptrtoint ptr %{{.*}} to i6427 // OGCG: %[[IB:.*]] = ptrtoint ptr %{{.*}} to i6428 // OGCG: %[[SUB:.*]] = sub i64 %[[IA]], %[[IB]]29 // OGCG: %[[Q:.*]] = sdiv exact i64 %[[SUB]], 830 // OGCG: ret i64 %[[Q]]31 32 return static_cast<size_type>(_finish - _start);33}