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libclc: Add assembly versions of vload for global int4/8/16

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The assembly should be generic, but at least currently R600 only supports
32-bit loads of int1/4, and I believe that only global is well-supported.

R600 lowers the 8/16 component vectors to multiple 4-bit loads.

The unoptimized C versions of the other stuff is left in place.

Patch by: Aaron Watry

llvm-svn: 185008
This commit is contained in:
Tom Stellard 2013-06-26 18:22:15 +00:00
parent 51441f80c5
commit 922ac056e3
4 changed files with 162 additions and 2 deletions
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2
libclc/generic/lib/SOURCES
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@ -24,6 +24,8 @@ shared/clamp.cl
shared/max.cl
shared/min.cl
shared/vload.cl
shared/vload_if.ll
shared/vload_impl.ll
shared/vstore.cl
workitem/get_global_id.cl
workitem/get_global_size.cl

53
libclc/generic/lib/shared/vload.cl
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@ -27,13 +27,12 @@
VLOAD_VECTORIZE(SCALAR_GENTYPE, __constant) \
VLOAD_VECTORIZE(SCALAR_GENTYPE, __global) \
//int/uint are special... see below
#define VLOAD_TYPES() \
VLOAD_ADDR_SPACES(char) \
VLOAD_ADDR_SPACES(uchar) \
VLOAD_ADDR_SPACES(short) \
VLOAD_ADDR_SPACES(ushort) \
VLOAD_ADDR_SPACES(int) \
VLOAD_ADDR_SPACES(uint) \
VLOAD_ADDR_SPACES(long) \
VLOAD_ADDR_SPACES(ulong) \
VLOAD_ADDR_SPACES(float) \
@ -45,3 +44,53 @@ VLOAD_TYPES()
VLOAD_ADDR_SPACES(double)
#endif
VLOAD_VECTORIZE(int, __private)
VLOAD_VECTORIZE(int, __local)
VLOAD_VECTORIZE(int, __constant)
VLOAD_VECTORIZE(uint, __private)
VLOAD_VECTORIZE(uint, __local)
VLOAD_VECTORIZE(uint, __constant)
_CLC_OVERLOAD _CLC_DEF int2 vload2(size_t offset, const global int *x) {
return (int2)(x[offset] , x[offset+1]);
}
_CLC_OVERLOAD _CLC_DEF int3 vload3(size_t offset, const global int *x) {
return (int3)(vload2(offset, x), x[offset+2]);
}
_CLC_OVERLOAD _CLC_DEF uint2 vload2(size_t offset, const global uint *x) {
return (uint2)(x[offset] , x[offset+1]);
}
_CLC_OVERLOAD _CLC_DEF uint3 vload3(size_t offset, const global uint *x) {
return (uint3)(vload2(offset, x), x[offset+2]);
}
/*Note: It is known that R600 doesn't support load <2 x ?> and <3 x ?>... so
* they aren't actually overridden here
*/
_CLC_DECL int4 __clc_vload4_int__global(size_t offset, const __global int *);
_CLC_DECL int8 __clc_vload8_int__global(size_t offset, const __global int *);
_CLC_DECL int16 __clc_vload16_int__global(size_t offset, const __global int *);
_CLC_OVERLOAD _CLC_DEF int4 vload4(size_t offset, const global int *x) {
return __clc_vload4_int__global(offset, x);
}
_CLC_OVERLOAD _CLC_DEF int8 vload8(size_t offset, const global int *x) {
return __clc_vload8_int__global(offset, x);
}
_CLC_OVERLOAD _CLC_DEF int16 vload16(size_t offset, const global int *x) {
return __clc_vload16_int__global(offset, x);
}
_CLC_DECL uint4 __clc_vload4_uint__global(size_t offset, const __global uint *);
_CLC_DECL uint8 __clc_vload8_uint__global(size_t offset, const __global uint *);
_CLC_DECL uint16 __clc_vload16_uint__global(size_t offset, const __global uint *);
_CLC_OVERLOAD _CLC_DEF uint4 vload4(size_t offset, const global uint *x) {
return __clc_vload4_uint__global(offset, x);
}
_CLC_OVERLOAD _CLC_DEF uint8 vload8(size_t offset, const global uint *x) {
return __clc_vload8_uint__global(offset, x);
}
_CLC_OVERLOAD _CLC_DEF uint16 vload16(size_t offset, const global uint *x) {
return __clc_vload16_uint__global(offset, x);
}

60
libclc/generic/lib/shared/vload_if.ll Normal file
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@ -0,0 +1,60 @@
;Start int global vload
declare <2 x i32> @__clc_vload2_impl_i32__global(i32 %x, i32 %y)
declare <3 x i32> @__clc_vload3_impl_i32__global(i32 %x, i32 %y)
declare <4 x i32> @__clc_vload4_impl_i32__global(i32 %x, i32 %y)
declare <8 x i32> @__clc_vload8_impl_i32__global(i32 %x, i32 %y)
declare <16 x i32> @__clc_vload16_impl_i32__global(i32 %x, i32 %y)
define <2 x i32> @__clc_vload2_int__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <2 x i32> @__clc_vload2_impl_i32__global(i32 %x, i32 %y)
ret <2 x i32> %call
}
define <3 x i32> @__clc_vload3_int__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <3 x i32> @__clc_vload3_impl_i32__global(i32 %x, i32 %y)
ret <3 x i32> %call
}
define <4 x i32> @__clc_vload4_int__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <4 x i32> @__clc_vload4_impl_i32__global(i32 %x, i32 %y)
ret <4 x i32> %call
}
define <8 x i32> @__clc_vload8_int__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <8 x i32> @__clc_vload8_impl_i32__global(i32 %x, i32 %y)
ret <8 x i32> %call
}
define <16 x i32> @__clc_vload16_int__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <16 x i32> @__clc_vload16_impl_i32__global(i32 %x, i32 %y)
ret <16 x i32> %call
}
;Start uint global vload
define <2 x i32> @__clc_vload2_uint__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <2 x i32> @__clc_vload2_impl_i32__global(i32 %x, i32 %y)
ret <2 x i32> %call
}
define <3 x i32> @__clc_vload3_uint__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <3 x i32> @__clc_vload3_impl_i32__global(i32 %x, i32 %y)
ret <3 x i32> %call
}
define <4 x i32> @__clc_vload4_uint__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <4 x i32> @__clc_vload4_impl_i32__global(i32 %x, i32 %y)
ret <4 x i32> %call
}
define <8 x i32> @__clc_vload8_uint__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <8 x i32> @__clc_vload8_impl_i32__global(i32 %x, i32 %y)
ret <8 x i32> %call
}
define <16 x i32> @__clc_vload16_uint__global(i32 %x, i32 %y) nounwind readonly alwaysinline {
%call = call <16 x i32> @__clc_vload16_impl_i32__global(i32 %x, i32 %y)
ret <16 x i32> %call
}

49
libclc/generic/lib/shared/vload_impl.ll Normal file
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@ -0,0 +1,49 @@
; This provides optimized implementations of vload4/8/16 for 32-bit int/uint
define <2 x i32> @__clc_vload2_impl_i32__global(i32 %offset, i32 addrspace(1)* nocapture %addr) nounwind readonly alwaysinline {
%1 = ptrtoint i32 addrspace(1)* %addr to i32
%2 = add i32 %1, %offset
%3 = inttoptr i32 %2 to <2 x i32> addrspace(1)*
%4 = load <2 x i32> addrspace(1)* %3, align 4, !tbaa !3
ret <2 x i32> %4
}
define <3 x i32> @__clc_vload3_impl_i32__global(i32 %offset, i32 addrspace(1)* nocapture %addr) nounwind readonly alwaysinline {
%1 = ptrtoint i32 addrspace(1)* %addr to i32
%2 = add i32 %1, %offset
%3 = inttoptr i32 %2 to <3 x i32> addrspace(1)*
%4 = load <3 x i32> addrspace(1)* %3, align 4, !tbaa !3
ret <3 x i32> %4
}
define <4 x i32> @__clc_vload4_impl_i32__global(i32 %offset, i32 addrspace(1)* nocapture %addr) nounwind readonly alwaysinline {
%1 = ptrtoint i32 addrspace(1)* %addr to i32
%2 = add i32 %1, %offset
%3 = inttoptr i32 %2 to <4 x i32> addrspace(1)*
%4 = load <4 x i32> addrspace(1)* %3, align 4, !tbaa !3
ret <4 x i32> %4
}
define <8 x i32> @__clc_vload8_impl_i32__global(i32 %offset, i32 addrspace(1)* nocapture %addr) nounwind readonly alwaysinline {
%1 = ptrtoint i32 addrspace(1)* %addr to i32
%2 = add i32 %1, %offset
%3 = inttoptr i32 %2 to <8 x i32> addrspace(1)*
%4 = load <8 x i32> addrspace(1)* %3, align 4, !tbaa !3
ret <8 x i32> %4
}
define <16 x i32> @__clc_vload16_impl_i32__global(i32 %offset, i32 addrspace(1)* nocapture %addr) nounwind readonly alwaysinline {
%1 = ptrtoint i32 addrspace(1)* %addr to i32
%2 = add i32 %1, %offset
%3 = inttoptr i32 %2 to <16 x i32> addrspace(1)*
%4 = load <16 x i32> addrspace(1)* %3, align 4, !tbaa !3
ret <16 x i32> %4
}
!1 = metadata !{metadata !"char", metadata !5}
!2 = metadata !{metadata !"short", metadata !5}
!3 = metadata !{metadata !"int", metadata !5}
!4 = metadata !{metadata !"long", metadata !5}
!5 = metadata !{metadata !"omnipotent char", metadata !6}
!6 = metadata !{metadata !"Simple C/C++ TBAA"}