1 | // RUN: %clang_cc1 -ffreestanding -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s |
2 | |
3 | // PR33722 |
4 | // RUN: %clang_cc1 -ffreestanding -triple x86_64-unknown-unknown -fms-extensions -fms-compatibility-version=19.00 -emit-llvm -o - %s | FileCheck %s |
5 | |
6 | #include <x86intrin.h> |
7 | |
8 | int test_bit_scan_forward(int a) { |
9 | return _bit_scan_forward(a); |
10 | // CHECK: @test_bit_scan_forward |
11 | // CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true) |
12 | // CHECK: ret i32 %[[call]] |
13 | } |
14 | |
15 | int test_bit_scan_reverse(int a) { |
16 | return _bit_scan_reverse(a); |
17 | // CHECK: %[[call:.*]] = call i32 @llvm.ctlz.i32(i32 %{{.*}}, i1 true) |
18 | // CHECK: %[[sub:.*]] = sub nsw i32 31, %[[call]] |
19 | // CHECK: ret i32 %[[sub]] |
20 | } |
21 | |
22 | int test__bsfd(int X) { |
23 | // CHECK: @test__bsfd |
24 | // CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true) |
25 | return __bsfd(X); |
26 | } |
27 | |
28 | int test__bsfq(long long X) { |
29 | // CHECK: @test__bsfq |
30 | // CHECK: %[[call:.*]] = call i64 @llvm.cttz.i64(i64 %{{.*}}, i1 true) |
31 | return __bsfq(X); |
32 | } |
33 | |
34 | int test__bsrd(int X) { |
35 | // CHECK: @test__bsrd |
36 | // CHECK: %[[call:.*]] = call i32 @llvm.ctlz.i32(i32 %{{.*}}, i1 true) |
37 | // CHECK: %[[sub:.*]] = sub nsw i32 31, %[[call]] |
38 | return __bsrd(X); |
39 | } |
40 | |
41 | int test__bsrq(long long X) { |
42 | // CHECK: @test__bsrq |
43 | // CHECK: %[[call:.*]] = call i64 @llvm.ctlz.i64(i64 %{{.*}}, i1 true) |
44 | // CHECK: %[[cast:.*]] = trunc i64 %[[call]] to i32 |
45 | // CHECK: %[[sub:.*]] = sub nsw i32 63, %[[cast]] |
46 | return __bsrq(X); |
47 | } |
48 | |