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llvm-6502/test/CodeGen/R600/load.ll
Tom Stellard 8ea83d4999 R600: Treat CONSTANT_ADDRESS loads like GLOBAL_ADDRESS loads when necessary 
These are really the same address space in hardware.  The only
difference is that CONSTANT_ADDRESS uses a special cache for faster
access.  When we are unable to use the constant kcache for some reason
(e.g. smaller types or lack of indirect addressing) then the instruction
selector must use GLOBAL_ADDRESS loads instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187006 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-23 23:54:56 +00:00

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; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck --check-prefix=R600-CHECK %s
; RUN: llc < %s -march=r600 -mcpu=cayman | FileCheck --check-prefix=R600-CHECK %s
; RUN: llc < %s -march=r600 -mcpu=SI | FileCheck --check-prefix=SI-CHECK %s
;===------------------------------------------------------------------------===;
; GLOBAL ADDRESS SPACE
;===------------------------------------------------------------------------===;
; Load an i8 value from the global address space.
; R600-CHECK: @load_i8
; R600-CHECK: VTX_READ_8 T{{[0-9]+\.X, T[0-9]+\.X}}
; SI-CHECK: @load_i8
; SI-CHECK: BUFFER_LOAD_UBYTE VGPR{{[0-9]+}},
define void @load_i8(i32 addrspace(1)* %out, i8 addrspace(1)* %in) {
%1 = load i8 addrspace(1)* %in
%2 = zext i8 %1 to i32
store i32 %2, i32 addrspace(1)* %out
ret void
}
; R600-CHECK: @load_i8_sext
; R600-CHECK: VTX_READ_8 [[DST:T[0-9]\.[XYZW]]], [[DST]]
; R600-CHECK: LSHL {{[* ]*}}T{{[0-9]}}.[[LSHL_CHAN:[XYZW]]], [[DST]]
; R600-CHECK: 24
; R600-CHECK: ASHR {{[* ]*}}T{{[0-9]\.[XYZW]}}, PV.[[LSHL_CHAN]]
; R600-CHECK: 24
; SI-CHECK: @load_i8_sext
; SI-CHECK: BUFFER_LOAD_SBYTE
define void @load_i8_sext(i32 addrspace(1)* %out, i8 addrspace(1)* %in) {
entry:
%0 = load i8 addrspace(1)* %in
%1 = sext i8 %0 to i32
store i32 %1, i32 addrspace(1)* %out
ret void
}
; Load an i16 value from the global address space.
; R600-CHECK: @load_i16
; R600-CHECK: VTX_READ_16 T{{[0-9]+\.X, T[0-9]+\.X}}
; SI-CHECK: @load_i16
; SI-CHECK: BUFFER_LOAD_USHORT
define void @load_i16(i32 addrspace(1)* %out, i16 addrspace(1)* %in) {
entry:
%0 = load i16 addrspace(1)* %in
%1 = zext i16 %0 to i32
store i32 %1, i32 addrspace(1)* %out
ret void
}
; R600-CHECK: @load_i16_sext
; R600-CHECK: VTX_READ_16 [[DST:T[0-9]\.[XYZW]]], [[DST]]
; R600-CHECK: LSHL {{[* ]*}}T{{[0-9]}}.[[LSHL_CHAN:[XYZW]]], [[DST]]
; R600-CHECK: 16
; R600-CHECK: ASHR {{[* ]*}}T{{[0-9]\.[XYZW]}}, PV.[[LSHL_CHAN]]
; R600-CHECK: 16
; SI-CHECK: @load_i16_sext
; SI-CHECK: BUFFER_LOAD_SSHORT
define void @load_i16_sext(i32 addrspace(1)* %out, i16 addrspace(1)* %in) {
entry:
%0 = load i16 addrspace(1)* %in
%1 = sext i16 %0 to i32
store i32 %1, i32 addrspace(1)* %out
ret void
}
; load an i32 value from the global address space.
; R600-CHECK: @load_i32
; R600-CHECK: VTX_READ_32 T{{[0-9]+}}.X, T{{[0-9]+}}.X, 0
; SI-CHECK: @load_i32
; SI-CHECK: BUFFER_LOAD_DWORD VGPR{{[0-9]+}}
define void @load_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
entry:
%0 = load i32 addrspace(1)* %in
store i32 %0, i32 addrspace(1)* %out
ret void
}
; load a f32 value from the global address space.
; R600-CHECK: @load_f32
; R600-CHECK: VTX_READ_32 T{{[0-9]+}}.X, T{{[0-9]+}}.X, 0
; SI-CHECK: @load_f32
; SI-CHECK: BUFFER_LOAD_DWORD VGPR{{[0-9]+}}
define void @load_f32(float addrspace(1)* %out, float addrspace(1)* %in) {
entry:
%0 = load float addrspace(1)* %in
store float %0, float addrspace(1)* %out
ret void
}
; load a v2f32 value from the global address space
; R600-CHECK: @load_v2f32
; R600-CHECK: VTX_READ_32
; R600-CHECK: VTX_READ_32
; SI-CHECK: @load_v2f32
; SI-CHECK: BUFFER_LOAD_DWORDX2
define void @load_v2f32(<2 x float> addrspace(1)* %out, <2 x float> addrspace(1)* %in) {
entry:
%0 = load <2 x float> addrspace(1)* %in
store <2 x float> %0, <2 x float> addrspace(1)* %out
ret void
}
; R600-CHECK: @load_i64
; R600-CHECK: RAT
; R600-CHECK: RAT
; SI-CHECK: @load_i64
; SI-CHECK: BUFFER_LOAD_DWORDX2
define void @load_i64(i64 addrspace(1)* %out, i64 addrspace(1)* %in) {
entry:
%0 = load i64 addrspace(1)* %in
store i64 %0, i64 addrspace(1)* %out
ret void
}
; R600-CHECK: @load_i64_sext
; R600-CHECK: RAT
; R600-CHECK: RAT
; R600-CHECK: ASHR {{[* ]*}}T{{[0-9]\.[XYZW]}}, T{{[0-9]\.[XYZW]}}, literal.x
; R600-CHECK: 31
; SI-CHECK: @load_i64_sext
; SI-CHECK: BUFFER_LOAD_DWORDX2 [[VAL:VGPR[0-9]_VGPR[0-9]]]
; SI-CHECK: V_LSHL_B64 [[LSHL:VGPR[0-9]_VGPR[0-9]]], [[VAL]], 32
; SI-CHECK: V_ASHR_I64 VGPR{{[0-9]}}_VGPR{{[0-9]}}, [[LSHL]], 32
define void @load_i64_sext(i64 addrspace(1)* %out, i32 addrspace(1)* %in) {
entry:
%0 = load i32 addrspace(1)* %in
%1 = sext i32 %0 to i64
store i64 %1, i64 addrspace(1)* %out
ret void
}
; R600-CHECK: @load_i64_zext
; R600-CHECK: RAT
; R600-CHECK: RAT
define void @load_i64_zext(i64 addrspace(1)* %out, i32 addrspace(1)* %in) {
entry:
%0 = load i32 addrspace(1)* %in
%1 = zext i32 %0 to i64
store i64 %1, i64 addrspace(1)* %out
ret void
}
;===------------------------------------------------------------------------===;
; CONSTANT ADDRESS SPACE
;===------------------------------------------------------------------------===;
; Load a sign-extended i8 value
; R600-CHECK: @load_const_i8_sext
; R600-CHECK: VTX_READ_8 [[DST:T[0-9]\.[XYZW]]], [[DST]]
; R600-CHECK: LSHL {{[* ]*}}T{{[0-9]}}.[[LSHL_CHAN:[XYZW]]], [[DST]]
; R600-CHECK: 24
; R600-CHECK: ASHR {{[* ]*}}T{{[0-9]\.[XYZW]}}, PV.[[LSHL_CHAN]]
; R600-CHECK: 24
; SI-CHECK: @load_const_i8_sext
; SI-CHECK: BUFFER_LOAD_SBYTE VGPR{{[0-9]+}},
define void @load_const_i8_sext(i32 addrspace(1)* %out, i8 addrspace(2)* %in) {
entry:
%0 = load i8 addrspace(2)* %in
%1 = sext i8 %0 to i32
store i32 %1, i32 addrspace(1)* %out
ret void
}
; Load an aligned i8 value
; R600-CHECK: @load_const_i8_aligned
; R600-CHECK: VTX_READ_8 T{{[0-9]+\.X, T[0-9]+\.X}}
; SI-CHECK: @load_const_i8_aligned
; SI-CHECK: BUFFER_LOAD_UBYTE VGPR{{[0-9]+}},
define void @load_const_i8_aligned(i32 addrspace(1)* %out, i8 addrspace(2)* %in) {
entry:
%0 = load i8 addrspace(2)* %in
%1 = zext i8 %0 to i32
store i32 %1, i32 addrspace(1)* %out
ret void
}
; Load an un-aligned i8 value
; R600-CHECK: @load_const_i8_unaligned
; R600-CHECK: VTX_READ_8 T{{[0-9]+\.X, T[0-9]+\.X}}
; SI-CHECK: @load_const_i8_unaligned
; SI-CHECK: BUFFER_LOAD_UBYTE VGPR{{[0-9]+}},
define void @load_const_i8_unaligned(i32 addrspace(1)* %out, i8 addrspace(2)* %in) {
entry:
%0 = getelementptr i8 addrspace(2)* %in, i32 1
%1 = load i8 addrspace(2)* %0
%2 = zext i8 %1 to i32
store i32 %2, i32 addrspace(1)* %out
ret void
}
; Load a sign-extended i16 value
; R600-CHECK: @load_const_i16_sext
; R600-CHECK: VTX_READ_16 [[DST:T[0-9]\.[XYZW]]], [[DST]]
; R600-CHECK: LSHL {{[* ]*}}T{{[0-9]}}.[[LSHL_CHAN:[XYZW]]], [[DST]]
; R600-CHECK: 16
; R600-CHECK: ASHR {{[* ]*}}T{{[0-9]\.[XYZW]}}, PV.[[LSHL_CHAN]]
; R600-CHECK: 16
; SI-CHECK: @load_const_i16_sext
; SI-CHECK: BUFFER_LOAD_SSHORT
define void @load_const_i16_sext(i32 addrspace(1)* %out, i16 addrspace(2)* %in) {
entry:
%0 = load i16 addrspace(2)* %in
%1 = sext i16 %0 to i32
store i32 %1, i32 addrspace(1)* %out
ret void
}
; Load an aligned i16 value
; R600-CHECK: @load_const_i16_aligned
; R600-CHECK: VTX_READ_16 T{{[0-9]+\.X, T[0-9]+\.X}}
; SI-CHECK: @load_const_i16_aligned
; SI-CHECK: BUFFER_LOAD_USHORT
define void @load_const_i16_aligned(i32 addrspace(1)* %out, i16 addrspace(2)* %in) {
entry:
%0 = load i16 addrspace(2)* %in
%1 = zext i16 %0 to i32
store i32 %1, i32 addrspace(1)* %out
ret void
}
; Load an un-aligned i16 value
; R600-CHECK: @load_const_i16_unaligned
; R600-CHECK: VTX_READ_16 T{{[0-9]+\.X, T[0-9]+\.X}}
; SI-CHECK: @load_const_i16_unaligned
; SI-CHECK: BUFFER_LOAD_USHORT
define void @load_const_i16_unaligned(i32 addrspace(1)* %out, i16 addrspace(2)* %in) {
entry:
%0 = getelementptr i16 addrspace(2)* %in, i32 1
%1 = load i16 addrspace(2)* %0
%2 = zext i16 %1 to i32
store i32 %2, i32 addrspace(1)* %out
ret void
}
; Load an i32 value from the constant address space.
; R600-CHECK: @load_const_addrspace_i32
; R600-CHECK: VTX_READ_32 T{{[0-9]+}}.X, T{{[0-9]+}}.X, 0
; SI-CHECK: @load_const_addrspace_i32
; SI-CHECK: S_LOAD_DWORD SGPR{{[0-9]+}}
define void @load_const_addrspace_i32(i32 addrspace(1)* %out, i32 addrspace(2)* %in) {
entry:
%0 = load i32 addrspace(2)* %in
store i32 %0, i32 addrspace(1)* %out
ret void
}
; Load a f32 value from the constant address space.
; R600-CHECK: @load_const_addrspace_f32
; R600-CHECK: VTX_READ_32 T{{[0-9]+}}.X, T{{[0-9]+}}.X, 0
; SI-CHECK: @load_const_addrspace_f32
; SI-CHECK: S_LOAD_DWORD SGPR{{[0-9]+}}
define void @load_const_addrspace_f32(float addrspace(1)* %out, float addrspace(2)* %in) {
%1 = load float addrspace(2)* %in
store float %1, float addrspace(1)* %out
ret void
}
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