| // RUN: %clang_cc1 -ffreestanding -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s |
| |
| // PR33722 |
| // RUN: %clang_cc1 -ffreestanding -triple x86_64-unknown-unknown -fms-extensions -fms-compatibility-version=19.00 -emit-llvm -o - %s | FileCheck %s |
| |
| #include <x86intrin.h> |
| |
| int test_bit_scan_forward(int a) { |
| return _bit_scan_forward(a); |
| // CHECK: @test_bit_scan_forward |
| // CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true) |
| // CHECK: ret i32 %[[call]] |
| } |
| |
| int test_bit_scan_reverse(int a) { |
| return _bit_scan_reverse(a); |
| // CHECK: %[[call:.*]] = call i32 @llvm.ctlz.i32(i32 %{{.*}}, i1 true) |
| // CHECK: %[[sub:.*]] = sub nsw i32 31, %[[call]] |
| // CHECK: ret i32 %[[sub]] |
| } |
| |
| int test__bsfd(int X) { |
| // CHECK: @test__bsfd |
| // CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true) |
| return __bsfd(X); |
| } |
| |
| int test__bsfq(long long X) { |
| // CHECK: @test__bsfq |
| // CHECK: %[[call:.*]] = call i64 @llvm.cttz.i64(i64 %{{.*}}, i1 true) |
| return __bsfq(X); |
| } |
| |
| int test__bsrd(int X) { |
| // CHECK: @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: @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); |
| } |
