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[libspirv][generic] re-use __clc_ctz implementation for __spirv_ocl_ctz #18478

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[libspirv][generic] re-use __clc_ctz implementation for __spirv_ocl_ctz #18478

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b94697c
[libspirv] re-use __clc_ctz implementation for __spirv_ocl_ctz
wenju-he May 15, 2025
a90c601
add schar variant of __clc_ctz
wenju-he May 15, 2025
bb4746c
Merge branch 'sycl' into libspirv-ctz-use-clc-ctz
wenju-he May 16, 2025
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5 changes: 5 additions & 0 deletions libclc/clc/lib/generic/integer/clc_ctz.cl
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,10 @@ _CLC_OVERLOAD _CLC_DEF char __clc_ctz(char x) {
return __clc_ctz(__clc_as_uchar(x));
}

_CLC_OVERLOAD _CLC_DEF schar __clc_ctz(schar x) {
return __clc_ctz(__clc_as_uchar(x));
}

_CLC_OVERLOAD _CLC_DEF uchar __clc_ctz(uchar x) { return __builtin_ctzg(x, 8); }

_CLC_OVERLOAD _CLC_DEF short __clc_ctz(short x) {
Expand All @@ -39,6 +43,7 @@ _CLC_OVERLOAD _CLC_DEF ulong __clc_ctz(ulong x) {
}

_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, char, __clc_ctz, char)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, schar, __clc_ctz, schar)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, uchar, __clc_ctz, uchar)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, short, __clc_ctz, short)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, ushort, __clc_ctz, ushort)
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50 changes: 5 additions & 45 deletions libclc/libspirv/lib/generic/integer/ctz.cl
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Expand Up @@ -6,51 +6,11 @@
//
//===----------------------------------------------------------------------===//

#include <clc/clcmacro.h>
#include <clc/integer/clc_ctz.h>
#include <libspirv/spirv.h>

_CLC_OVERLOAD _CLC_DEF short __spirv_ocl_ctz(short x) {
return x ? __builtin_ctzs(x) : 16;
}
#define FUNCTION __spirv_ocl_ctz
#define __CLC_FUNCTION(x) __clc_ctz
#define __CLC_BODY <clc/shared/unary_def.inc>

_CLC_OVERLOAD _CLC_DEF ushort __spirv_ocl_ctz(ushort x) {
return x ? __builtin_ctzs(x) : 16;
}

_CLC_OVERLOAD _CLC_DEF int __spirv_ocl_ctz(int x) {
return x ? __builtin_ctz(x) : 32;
}

_CLC_OVERLOAD _CLC_DEF uint __spirv_ocl_ctz(uint x) {
return x ? __builtin_ctz(x) : 32;
}

_CLC_OVERLOAD _CLC_DEF long __spirv_ocl_ctz(long x) {
return x ? __builtin_ctzl(x) : 64;
}

_CLC_OVERLOAD _CLC_DEF ulong __spirv_ocl_ctz(ulong x) {
return x ? __builtin_ctzl(x) : 64;
}

_CLC_OVERLOAD _CLC_DEF char __spirv_ocl_ctz(char x) {
return x ? __spirv_ocl_ctz((ushort)(uchar)x) : 8;
}

_CLC_OVERLOAD _CLC_DEF schar __spirv_ocl_ctz(schar x) {
return x ? __spirv_ocl_ctz((ushort)(uchar)x) : 8;
}

_CLC_OVERLOAD _CLC_DEF uchar __spirv_ocl_ctz(uchar x) {
return x ? __spirv_ocl_ctz((ushort)x) : 8;
}

_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, char, __spirv_ocl_ctz, char)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, schar, __spirv_ocl_ctz, schar)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, uchar, __spirv_ocl_ctz, uchar)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, short, __spirv_ocl_ctz, short)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, ushort, __spirv_ocl_ctz, ushort)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, int, __spirv_ocl_ctz, int)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, uint, __spirv_ocl_ctz, uint)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, long, __spirv_ocl_ctz, long)
_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, ulong, __spirv_ocl_ctz, ulong)
#include <clc/integer/gentype.inc>
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