| // RUN: %clang_cc1 -x c -ffreestanding %s -triple=x86_64-unknown-unknown -emit-llvm -o - | FileCheck %s |
| // RUN: %clang_cc1 -x c++ -std=c++11 -ffreestanding %s -triple=x86_64-unknown-unknown -emit-llvm -o - | FileCheck %s |
| |
| // PR33722 |
| // RUN: %clang_cc1 -x c -ffreestanding %s -triple x86_64-unknown-unknown -fms-extensions -fms-compatibility-version=19.00 -emit-llvm -o - | FileCheck %s |
| // RUN: %clang_cc1 -x c++ -ffreestanding %s -triple x86_64-unknown-unknown -fms-extensions -fms-compatibility-version=19.00 -emit-llvm -o - | FileCheck %s |
| |
| #include <x86intrin.h> |
| |
| int test_bit_scan_forward(int a) { |
| // CHECK-LABEL: test_bit_scan_forward |
| // CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true) |
| // CHECK: ret i32 %[[call]] |
| return _bit_scan_forward(a); |
| } |
| |
| int test_bit_scan_reverse(int a) { |
| // CHECK-LABEL: test_bit_scan_reverse |
| // CHECK: %[[call:.*]] = call i32 @llvm.ctlz.i32(i32 %{{.*}}, i1 true) |
| // CHECK: %[[sub:.*]] = sub nsw i32 31, %[[call]] |
| // CHECK: ret i32 %[[sub]] |
| return _bit_scan_reverse(a); |
| } |
| |
| int test__bsfd(int X) { |
| // CHECK-LABEL: test__bsfd |
| // CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true) |
| return __bsfd(X); |
| } |
| |
| int test__bsfq(long long X) { |
| // CHECK-LABEL: test__bsfq |
| // CHECK: %[[call:.*]] = call i64 @llvm.cttz.i64(i64 %{{.*}}, i1 true) |
| return __bsfq(X); |
| } |
| |
| int test__bsrd(int X) { |
| // CHECK-LABEL: test__bsrd |
| // CHECK: %[[call:.*]] = call i32 @llvm.ctlz.i32(i32 %{{.*}}, i1 true) |
| // CHECK: %[[sub:.*]] = sub nsw i32 31, %[[call]] |
| return __bsrd(X); |
| } |
| |
| int test__bsrq(long long X) { |
| // CHECK-LABEL: test__bsrq |
| // CHECK: %[[call:.*]] = call i64 @llvm.ctlz.i64(i64 %{{.*}}, i1 true) |
| // CHECK: %[[cast:.*]] = trunc i64 %[[call]] to i32 |
| // CHECK: %[[sub:.*]] = sub nsw i32 63, %[[cast]] |
| return __bsrq(X); |
| } |
| |
| // Test constexpr handling. |
| #if defined(__cplusplus) && (__cplusplus >= 201103L) |
| |
| char bsf_0[_bit_scan_forward(0x00000001) == 0 ? 1 : -1]; |
| char bsf_1[_bit_scan_forward(0x10000000) == 28 ? 1 : -1]; |
| |
| char bsr_0[_bit_scan_reverse(0x00000001) == 0 ? 1 : -1]; |
| char bsr_1[_bit_scan_reverse(0x01000000) == 24 ? 1 : -1]; |
| |
| char bsfd_0[__bsfd(0x00000008) == 3 ? 1 : -1]; |
| char bsfd_1[__bsfd(0x00010008) == 3 ? 1 : -1]; |
| |
| char bsrd_0[__bsrd(0x00000010) == 4 ? 1 : -1]; |
| char bsrd_1[__bsrd(0x00100100) == 20 ? 1 : -1]; |
| |
| char bsfq_0[__bsfq(0x0000000800000000ULL) == 35 ? 1 : -1]; |
| char bsfq_1[__bsfq(0x0004000000000000ULL) == 50 ? 1 : -1]; |
| |
| char bsrq_0[__bsrq(0x0000100800000000ULL) == 44 ? 1 : -1]; |
| char bsrq_1[__bsrq(0x0004000100000000ULL) == 50 ? 1 : -1]; |
| |
| #endif |