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[X86] Emit better code for _mm_cvtu32_sd, _mm_cvtu64_sd, _mm_cvtu32_ss, and _mm_cvtu64_ss. 

We can use direct C code for these that will use uitofp and insertelement instructions.

For the versions that take an explicit rounding mode we can't do this.

llvm-svn: 332203
This commit is contained in:
Craig Topper 2018-05-13 23:03:30 +00:00
parent 911025b1cd
commit 6fa91254e4
3 changed files with 16 additions and 12 deletions
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1
clang/include/clang/Basic/BuiltinsX86.def
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@ -1840,7 +1840,6 @@ TARGET_BUILTIN(__builtin_ia32_cvtw2mask256, "UsV16s", "nc", "avx512bw,avx512vl")
TARGET_BUILTIN(__builtin_ia32_cvtsd2ss_round_mask, "V4fV4fV2dV4fUcIi", "nc", "avx512f")
TARGET_BUILTIN(__builtin_ia32_cvtsi2ss32, "V4fV4fiIi", "nc", "avx512f")
TARGET_BUILTIN(__builtin_ia32_cvtss2sd_round_mask, "V2dV2dV4fV2dUcIi", "nc", "avx512f")
TARGET_BUILTIN(__builtin_ia32_cvtusi2sd32, "V2dV2dUi", "nc", "avx512f")
TARGET_BUILTIN(__builtin_ia32_cvtusi2ss32, "V4fV4fUiIi", "nc", "avx512f")
TARGET_BUILTIN(__builtin_ia32_vpmultishiftqb512_mask, "V64cV64cV64cV64cULLi", "nc", "avx512vbmi")
TARGET_BUILTIN(__builtin_ia32_vpmultishiftqb128_mask, "V16cV16cV16cV16cUs", "nc", "avx512vbmi,avx512vl")

15
clang/lib/Headers/avx512fintrin.h
View File

@ -9521,7 +9521,8 @@ _mm_maskz_cvtss_sd (__mmask8 __U, __m128d __A, __m128 __B)
static __inline__ __m128d __DEFAULT_FN_ATTRS
_mm_cvtu32_sd (__m128d __A, unsigned __B)
{
return (__m128d) __builtin_ia32_cvtusi2sd32 ((__v2df) __A, __B);
__A[0] = __B;
return __A;
}
#ifdef __x86_64__
@ -9532,8 +9533,8 @@ _mm_cvtu32_sd (__m128d __A, unsigned __B)
static __inline__ __m128d __DEFAULT_FN_ATTRS
_mm_cvtu64_sd (__m128d __A, unsigned long long __B)
{
return (__m128d) __builtin_ia32_cvtusi2sd64 ((__v2df) __A, __B,
_MM_FROUND_CUR_DIRECTION);
__A[0] = __B;
return __A;
}
#endif
@ -9544,8 +9545,8 @@ _mm_cvtu64_sd (__m128d __A, unsigned long long __B)
static __inline__ __m128 __DEFAULT_FN_ATTRS
_mm_cvtu32_ss (__m128 __A, unsigned __B)
{
return (__m128) __builtin_ia32_cvtusi2ss32 ((__v4sf) __A, __B,
_MM_FROUND_CUR_DIRECTION);
__A[0] = __B;
return __A;
}
#ifdef __x86_64__
@ -9556,8 +9557,8 @@ _mm_cvtu32_ss (__m128 __A, unsigned __B)
static __inline__ __m128 __DEFAULT_FN_ATTRS
_mm_cvtu64_ss (__m128 __A, unsigned long long __B)
{
return (__m128) __builtin_ia32_cvtusi2ss64 ((__v4sf) __A, __B,
_MM_FROUND_CUR_DIRECTION);
__A[0] = __B;
return __A;
}
#endif

12
clang/test/CodeGen/avx512f-builtins.c
View File

@ -7007,7 +7007,8 @@ __m128d test_mm_maskz_cvt_roundss_sd( __mmask8 __U, __m128d __A, __m128 __B) {
__m128d test_mm_cvtu32_sd(__m128d __A, unsigned __B) {
// CHECK-LABEL: @test_mm_cvtu32_sd
// CHECK: @llvm.x86.avx512.cvtusi2sd
// CHECK: uitofp i32 %{{.*}} to double
// CHECK: insertelement <2 x double> %{{.*}}, double %{{.*}}, i32 0
return _mm_cvtu32_sd(__A, __B);
}
@ -7020,7 +7021,8 @@ __m128d test_mm_cvt_roundu64_sd(__m128d __A, unsigned long long __B) {
__m128d test_mm_cvtu64_sd(__m128d __A, unsigned long long __B) {
// CHECK-LABEL: @test_mm_cvtu64_sd
// CHECK: @llvm.x86.avx512.cvtusi642sd
// CHECK: uitofp i64 %{{.*}} to double
// CHECK: insertelement <2 x double> %{{.*}}, double %{{.*}}, i32 0
return _mm_cvtu64_sd(__A, __B);
}
#endif
@ -7033,7 +7035,8 @@ __m128 test_mm_cvt_roundu32_ss(__m128 __A, unsigned __B) {
__m128 test_mm_cvtu32_ss(__m128 __A, unsigned __B) {
// CHECK-LABEL: @test_mm_cvtu32_ss
// CHECK: @llvm.x86.avx512.cvtusi2ss
// CHECK: uitofp i32 %{{.*}} to float
// CHECK: insertelement <4 x float> %{{.*}}, float %{{.*}}, i32 0
return _mm_cvtu32_ss(__A, __B);
}
@ -7046,7 +7049,8 @@ __m128 test_mm_cvt_roundu64_ss(__m128 __A, unsigned long long __B) {
__m128 test_mm_cvtu64_ss(__m128 __A, unsigned long long __B) {
// CHECK-LABEL: @test_mm_cvtu64_ss
// CHECK: @llvm.x86.avx512.cvtusi642ss
// CHECK: uitofp i64 %{{.*}} to float
// CHECK: insertelement <4 x float> %{{.*}}, float %{{.*}}, i32 0
return _mm_cvtu64_ss(__A, __B);
}
#endif