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| author | Craig Topper <craig.topper@intel.com> | 2019-03-24 00:56:52 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2019-03-24 00:56:52 +0000 |
| commit | 8a55120a7d72bed6c93749e0a6dbd0a2fcd873dd (patch) | |
| tree | ad93f7270a7441416dce8a450e53217e39331220 /test/CodeGen/x86-bswap.c | |
| parent | b4bcb2930e135762b2820fe85ba4a8cb65e431be (diff) | |
[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
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@356848 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/x86-bswap.c')
| -rw-r--r-- | test/CodeGen/x86-bswap.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/CodeGen/x86-bswap.c b/test/CodeGen/x86-bswap.c new file mode 100644 index 0000000000..adf8b7846a --- /dev/null +++ b/test/CodeGen/x86-bswap.c @@ -0,0 +1,29 @@ +// RUN: %clang_cc1 -ffreestanding %s -triple=x86_64-apple-darwin -emit-llvm -o - | FileCheck %s + +#include <x86intrin.h> + +int test__bswapd(int X) { +// CHECK-LABEL: @test__bswapd +// CHECK: call i32 @llvm.bswap.i32 + return __bswapd(X); +} + +int test_bswap(int X) { +// CHECK-LABEL: @test_bswap +// CHECK: call i32 @llvm.bswap.i32 + return _bswap(X); +} + +long test__bswapq(long long X) { +// CHECK-LABEL: @test__bswapq +// CHECK: call i64 @llvm.bswap.i64 + return __bswapq(X); +} + +long test_bswap64(long long X) { +// CHECK-LABEL: @test_bswap64 +// CHECK: call i64 @llvm.bswap.i64 + return _bswap64(X); +} + + |