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llvm-project/clang/test/CodeGen/bitscan-builtins.c

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[X86] Remove the mm_malloc.h include guard hack from the X86 builtins tests The X86 clang/test/CodeGen/*builtins.c tests define the mm_malloc.h include guard as a hack for avoiding its inclusion (mm_malloc.h requires a hosted environment since it expects stdlib.h to be available - which is not the case in these internal clang codegen tests). This patch removes this hack and instead passes -ffreestanding to clang cc1. Differential Revision: https://reviews.llvm.org/D24825 llvm-svn: 282581
2016-09-28 19:59:09 +08:00
// RUN: %clang_cc1 -ffreestanding -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
Adding front-end support to several intrinsics (bit scanning, conversion and state reading intrinsics) Adding LLVM front-end support to two intrinsics dealing with bit scan: _bit_scan_forward and _bit_scan_reverse. Their functionality is as described in Intel intrinsics guide: https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_bit_scan_forward&expand=371,370 https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_bit_scan_reverse&expand=371,370 Furthermore, adding clang front-end support to these conversion intrinsics: _mm256_cvtsd_f64, _mm256_cvtsi256_si32 and _mm256_cvtss_f32. Finally, adding tests to all of the above, as well as to the state reading intrinsics _rdpmc and _rdtsc. Their functionality is also specified in the Intel intrinsics guide. Commit on behalf of Omer Paparo Bivas llvm-svn: 271387
2016-06-01 20:21:00 +08:00
X86 Intrinsics: _bit_scan_forward should not be under #ifdef __RDRND__ Summary: The _bit_scan_forward and _bit_scan_reverse intrinsics were accidentally masked under the preprocessor checks that prune intrinsics definitions for the benefit of faster compile-time on Windows. This patch moves the definitons out of that region. Fixes pr33722 Reviewers: craig.topper, aaboud, thakis Reviewed By: craig.topper Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D35184 llvm-svn: 307524
2017-07-10 15:13:56 +08:00
// PR33722
[X86] Add inline assembly versions of _InterlockedExchange_HLEAcquire/Release and _InterlockedCompareExchange_HLEAcquire/Release for MSVC compatibility. Clang/LLVM doesn't have a way to pass an HLE hint through to the X86 backend to emit HLE prefixed instructions. So this is a good short term fix. Differential Revision: https://reviews.llvm.org/D47672 llvm-svn: 334751
2018-06-15 02:43:52 +08:00
// RUN: %clang_cc1 -ffreestanding -triple x86_64-unknown-unknown -fms-extensions -fms-compatibility-version=19.00 -emit-llvm -o - %s | FileCheck %s
X86 Intrinsics: _bit_scan_forward should not be under #ifdef __RDRND__ Summary: The _bit_scan_forward and _bit_scan_reverse intrinsics were accidentally masked under the preprocessor checks that prune intrinsics definitions for the benefit of faster compile-time on Windows. This patch moves the definitons out of that region. Fixes pr33722 Reviewers: craig.topper, aaboud, thakis Reviewed By: craig.topper Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D35184 llvm-svn: 307524
2017-07-10 15:13:56 +08:00
[X86] Add BSR/BSF/BSWAP intrinsics to ia32intrin.h to match gcc. Summary: These are all implemented by icc as well. I made bit_scan_forward/reverse forward to the __bsfd/__bsrq since we also have __bsfq/__bsrq. Note, when lzcnt is enabled the bsr intrinsics generates lzcnt+xor instead of bsr. Reviewers: RKSimon, spatel Subscribers: cfe-commits, llvm-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D59682 llvm-svn: 356848
2019-03-24 08:56:52 +08:00
#include <x86intrin.h>
Adding front-end support to several intrinsics (bit scanning, conversion and state reading intrinsics) Adding LLVM front-end support to two intrinsics dealing with bit scan: _bit_scan_forward and _bit_scan_reverse. Their functionality is as described in Intel intrinsics guide: https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_bit_scan_forward&expand=371,370 https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_bit_scan_reverse&expand=371,370 Furthermore, adding clang front-end support to these conversion intrinsics: _mm256_cvtsd_f64, _mm256_cvtsi256_si32 and _mm256_cvtss_f32. Finally, adding tests to all of the above, as well as to the state reading intrinsics _rdpmc and _rdtsc. Their functionality is also specified in the Intel intrinsics guide. Commit on behalf of Omer Paparo Bivas llvm-svn: 271387
2016-06-01 20:21:00 +08:00
int test_bit_scan_forward(int a) {
return _bit_scan_forward(a);
// CHECK: @test_bit_scan_forward
[X86] Add BSR/BSF/BSWAP intrinsics to ia32intrin.h to match gcc. Summary: These are all implemented by icc as well. I made bit_scan_forward/reverse forward to the __bsfd/__bsrq since we also have __bsfq/__bsrq. Note, when lzcnt is enabled the bsr intrinsics generates lzcnt+xor instead of bsr. Reviewers: RKSimon, spatel Subscribers: cfe-commits, llvm-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D59682 llvm-svn: 356848
2019-03-24 08:56:52 +08:00
// CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true)
[immintrin] Reimplement _bit_scan_{forward,reverse} There is no need to use a target-specific intrinsic to implement _bit_scan_forward or _bit_scan_reverse, reimplementing them using generic intrinsics makes it more likely that the middle end will understand what's going on. llvm-svn: 272564
2016-06-14 01:26:16 +08:00
// CHECK: ret i32 %[[call]]
Adding front-end support to several intrinsics (bit scanning, conversion and state reading intrinsics) Adding LLVM front-end support to two intrinsics dealing with bit scan: _bit_scan_forward and _bit_scan_reverse. Their functionality is as described in Intel intrinsics guide: https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_bit_scan_forward&expand=371,370 https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_bit_scan_reverse&expand=371,370 Furthermore, adding clang front-end support to these conversion intrinsics: _mm256_cvtsd_f64, _mm256_cvtsi256_si32 and _mm256_cvtss_f32. Finally, adding tests to all of the above, as well as to the state reading intrinsics _rdpmc and _rdtsc. Their functionality is also specified in the Intel intrinsics guide. Commit on behalf of Omer Paparo Bivas llvm-svn: 271387
2016-06-01 20:21:00 +08:00
}
int test_bit_scan_reverse(int a) {
return _bit_scan_reverse(a);
[X86] Add BSR/BSF/BSWAP intrinsics to ia32intrin.h to match gcc. Summary: These are all implemented by icc as well. I made bit_scan_forward/reverse forward to the __bsfd/__bsrq since we also have __bsfq/__bsrq. Note, when lzcnt is enabled the bsr intrinsics generates lzcnt+xor instead of bsr. Reviewers: RKSimon, spatel Subscribers: cfe-commits, llvm-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D59682 llvm-svn: 356848
2019-03-24 08:56:52 +08:00
// CHECK: %[[call:.*]] = call i32 @llvm.ctlz.i32(i32 %{{.*}}, i1 true)
Test fix -- use captured call result instead of hardcoded %2. llvm-svn: 272573
2016-06-14 02:44:22 +08:00
// CHECK: %[[sub:.*]] = sub nsw i32 31, %[[call]]
[immintrin] Reimplement _bit_scan_{forward,reverse} There is no need to use a target-specific intrinsic to implement _bit_scan_forward or _bit_scan_reverse, reimplementing them using generic intrinsics makes it more likely that the middle end will understand what's going on. llvm-svn: 272564
2016-06-14 01:26:16 +08:00
// CHECK: ret i32 %[[sub]]
Adding front-end support to several intrinsics (bit scanning, conversion and state reading intrinsics) Adding LLVM front-end support to two intrinsics dealing with bit scan: _bit_scan_forward and _bit_scan_reverse. Their functionality is as described in Intel intrinsics guide: https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_bit_scan_forward&expand=371,370 https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_bit_scan_reverse&expand=371,370 Furthermore, adding clang front-end support to these conversion intrinsics: _mm256_cvtsd_f64, _mm256_cvtsi256_si32 and _mm256_cvtss_f32. Finally, adding tests to all of the above, as well as to the state reading intrinsics _rdpmc and _rdtsc. Their functionality is also specified in the Intel intrinsics guide. Commit on behalf of Omer Paparo Bivas llvm-svn: 271387
2016-06-01 20:21:00 +08:00
}
[X86] Add BSR/BSF/BSWAP intrinsics to ia32intrin.h to match gcc. Summary: These are all implemented by icc as well. I made bit_scan_forward/reverse forward to the __bsfd/__bsrq since we also have __bsfq/__bsrq. Note, when lzcnt is enabled the bsr intrinsics generates lzcnt+xor instead of bsr. Reviewers: RKSimon, spatel Subscribers: cfe-commits, llvm-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D59682 llvm-svn: 356848
2019-03-24 08:56:52 +08:00
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);
}