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llvm-project/llvm/test/CodeGen/AMDGPU/smrd.ll
Matt Arsenault 8c4a35237a AMDGPU: Add pass to lower kernel arguments to loads 
This replaces most argument uses with loads, but for
now not all.

The code in SelectionDAG for calling convention lowering
is actively harmful for amdgpu_kernel. It attempts to
split the argument types into register legal types, which
results in low quality code for arbitary types. Since
all kernel arguments are passed in memory, we just want the
raw types.

I've tried a couple of methods of mitigating this in SelectionDAG,
but it's easier to just bypass this problem alltogether. It's
possible to hack around the problem in the initial lowering,
but the real problem is the DAG then expects to be able to use
CopyToReg/CopyFromReg for uses of the arguments outside the block.

Exposing the argument loads in the IR also has the advantage
that the LoadStoreVectorizer can merge them.

I'm not sure the best approach to dealing with the IR
argument list is. The patch as-is just leaves the IR arguments
in place, so all the existing code will still compute the same
kernarg size and pointlessly lowers the arguments.

Arguably the frontend should emit kernels with an empty argument
list in the first place. Alternatively a dummy array could be
inserted as a single argument just to reserve space.

This does have some disadvantages. Local pointer kernel arguments can
no longer have AssertZext placed  on them as the equivalent !range
metadata is not valid on pointer  typed loads. This is mostly bad
for SI which needs to know about the known bits in order to use the
DS instruction offset, so in this case this is not done.

More importantly, this skips noalias arguments since this pass
does not yet convert this to the equivalent !alias.scope and !noalias
metadata. Producing this metadata correctly seems to be tricky,
although this logically is the same as inlining into a function which
doesn't exist. Additionally, exposing these loads to the vectorizer
may result in degraded aliasing information if a pointer load is
merged with another argument load.

I'm also not entirely sure this is preserving the current clover
ABI, although I would greatly prefer if it would stop widening
arguments and match the HSA ABI. As-is I think it is extending
< 4-byte arguments to 4-bytes but doesn't align them to 4-bytes.

llvm-svn: 335650
2018-06-26 19:10:00 +00:00

351 lines
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; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefix=SI -check-prefix=GCN -check-prefix=SICIVI -check-prefix=SICI -check-prefix=SIVIGFX9 %s
; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefix=CI -check-prefix=GCN -check-prefix=SICIVI -check-prefix=SICI %s
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefix=VI -check-prefix=GCN -check-prefix=SICIVI -check-prefix=VIGFX9 -check-prefix=SIVIGFX9 %s
; RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefix=GFX9 -check-prefix=GCN -check-prefix=VIGFX9 -check-prefix=SIVIGFX9 %s
; SMRD load with an immediate offset.
; GCN-LABEL: {{^}}smrd0:
; SICI: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x1 ; encoding: [0x01
; VIGFX9: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x4
define amdgpu_kernel void @smrd0(i32 addrspace(1)* %out, i32 addrspace(4)* %ptr) #0 {
entry:
%tmp = getelementptr i32, i32 addrspace(4)* %ptr, i64 1
%tmp1 = load i32, i32 addrspace(4)* %tmp
store i32 %tmp1, i32 addrspace(1)* %out
ret void
}
; SMRD load with the largest possible immediate offset.
; GCN-LABEL: {{^}}smrd1:
; SICI: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0xff ; encoding: [0xff,0x{{[0-9]+[137]}}
; VIGFX9: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x3fc
define amdgpu_kernel void @smrd1(i32 addrspace(1)* %out, i32 addrspace(4)* %ptr) #0 {
entry:
%tmp = getelementptr i32, i32 addrspace(4)* %ptr, i64 255
%tmp1 = load i32, i32 addrspace(4)* %tmp
store i32 %tmp1, i32 addrspace(1)* %out
ret void
}
; SMRD load with an offset greater than the largest possible immediate.
; GCN-LABEL: {{^}}smrd2:
; SI: s_movk_i32 s[[OFFSET:[0-9]]], 0x400
; SI: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], s[[OFFSET]] ; encoding: [0x0[[OFFSET]]
; CI: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x100
; VIGFX9: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x400
; GCN: s_endpgm
define amdgpu_kernel void @smrd2(i32 addrspace(1)* %out, i32 addrspace(4)* %ptr) #0 {
entry:
%tmp = getelementptr i32, i32 addrspace(4)* %ptr, i64 256
%tmp1 = load i32, i32 addrspace(4)* %tmp
store i32 %tmp1, i32 addrspace(1)* %out
ret void
}
; SMRD load with a 64-bit offset
; GCN-LABEL: {{^}}smrd3:
; FIXME: There are too many copies here because we don't fold immediates
; through REG_SEQUENCE
; SI: s_load_dwordx2 s[{{[0-9]:[0-9]}}], s[{{[0-9]:[0-9]}}], 0x13 ; encoding: [0x13
; TODO: Add VI checks
; GCN: s_endpgm
define amdgpu_kernel void @smrd3(i32 addrspace(1)* %out, [8 x i32], i32 addrspace(4)* %ptr) #0 {
entry:
%tmp = getelementptr i32, i32 addrspace(4)* %ptr, i64 4294967296
%tmp1 = load i32, i32 addrspace(4)* %tmp
store i32 %tmp1, i32 addrspace(1)* %out
ret void
}
; SMRD load with the largest possible immediate offset on VI
; GCN-LABEL: {{^}}smrd4:
; SI: s_mov_b32 [[OFFSET:s[0-9]+]], 0xffffc
; SI: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], [[OFFSET]]
; CI: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x3ffff
; VIGFX9: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0xffffc
define amdgpu_kernel void @smrd4(i32 addrspace(1)* %out, i32 addrspace(4)* %ptr) #0 {
entry:
%tmp = getelementptr i32, i32 addrspace(4)* %ptr, i64 262143
%tmp1 = load i32, i32 addrspace(4)* %tmp
store i32 %tmp1, i32 addrspace(1)* %out
ret void
}
; SMRD load with an offset greater than the largest possible immediate on VI
; GCN-LABEL: {{^}}smrd5:
; SIVIGFX9: s_mov_b32 [[OFFSET:s[0-9]+]], 0x100000
; SIVIGFX9: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], [[OFFSET]]
; CI: s_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x40000
; GCN: s_endpgm
define amdgpu_kernel void @smrd5(i32 addrspace(1)* %out, i32 addrspace(4)* %ptr) #0 {
entry:
%tmp = getelementptr i32, i32 addrspace(4)* %ptr, i64 262144
%tmp1 = load i32, i32 addrspace(4)* %tmp
store i32 %tmp1, i32 addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}smrd_hazard:
; GCN-DAG: s_mov_b32 s3, 3
; GCN-DAG: s_mov_b32 s2, 2
; GCN-DAG: s_mov_b32 s1, 1
; GCN-DAG: s_mov_b32 s0, 0
; SI-NEXT: nop 3
; GCN-NEXT: s_buffer_load_dword s0, s[0:3], 0x0
define amdgpu_ps float @smrd_hazard(<4 x i32> inreg %desc) #0 {
main_body:
%d0 = insertelement <4 x i32> undef, i32 0, i32 0
%d1 = insertelement <4 x i32> %d0, i32 1, i32 1
%d2 = insertelement <4 x i32> %d1, i32 2, i32 2
%d3 = insertelement <4 x i32> %d2, i32 3, i32 3
%r = call float @llvm.SI.load.const.v4i32(<4 x i32> %d3, i32 0)
ret float %r
}
; SMRD load using the load.const.v4i32 intrinsic with an immediate offset
; GCN-LABEL: {{^}}smrd_load_const0:
; SICI: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x4 ; encoding: [0x04
; VIGFX9: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x10
define amdgpu_ps void @smrd_load_const0(<4 x i32> addrspace(4)* inreg %arg, <4 x i32> addrspace(4)* inreg %arg1, <32 x i8> addrspace(4)* inreg %arg2, i32 inreg %arg3, <2 x i32> %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <3 x i32> %arg7, <2 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, float %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19) #0 {
main_body:
%tmp = getelementptr <4 x i32>, <4 x i32> addrspace(4)* %arg, i32 0
%tmp20 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp
%tmp21 = call float @llvm.SI.load.const.v4i32(<4 x i32> %tmp20, i32 16)
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %tmp21, float %tmp21, float %tmp21, float %tmp21, i1 true, i1 true) #0
ret void
}
; SMRD load using the load.const.v4i32 intrinsic with the largest possible immediate
; offset.
; GCN-LABEL: {{^}}smrd_load_const1:
; SICI: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0xff ; encoding: [0xff
; VIGFX9: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x3fc
define amdgpu_ps void @smrd_load_const1(<4 x i32> addrspace(4)* inreg %arg, <4 x i32> addrspace(4)* inreg %arg1, <32 x i8> addrspace(4)* inreg %arg2, i32 inreg %arg3, <2 x i32> %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <3 x i32> %arg7, <2 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, float %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19) #0 {
main_body:
%tmp = getelementptr <4 x i32>, <4 x i32> addrspace(4)* %arg, i32 0
%tmp20 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp
%tmp21 = call float @llvm.SI.load.const.v4i32(<4 x i32> %tmp20, i32 1020)
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %tmp21, float %tmp21, float %tmp21, float %tmp21, i1 true, i1 true) #0
ret void
}
; SMRD load using the load.const.v4i32 intrinsic with an offset greater than the
; largets possible immediate.
; immediate offset.
; GCN-LABEL: {{^}}smrd_load_const2:
; SI: s_movk_i32 s[[OFFSET:[0-9]]], 0x400
; SI: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], s[[OFFSET]] ; encoding: [0x0[[OFFSET]]
; CI: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x100
; VIGFX9: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x400
define amdgpu_ps void @smrd_load_const2(<4 x i32> addrspace(4)* inreg %arg, <4 x i32> addrspace(4)* inreg %arg1, <32 x i8> addrspace(4)* inreg %arg2, i32 inreg %arg3, <2 x i32> %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <3 x i32> %arg7, <2 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, float %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19) #0 {
main_body:
%tmp = getelementptr <4 x i32>, <4 x i32> addrspace(4)* %arg, i32 0
%tmp20 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp
%tmp21 = call float @llvm.SI.load.const.v4i32(<4 x i32> %tmp20, i32 1024)
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %tmp21, float %tmp21, float %tmp21, float %tmp21, i1 true, i1 true) #0
ret void
}
; SMRD load with the largest possible immediate offset on VI
; GCN-LABEL: {{^}}smrd_load_const3:
; SI: s_mov_b32 [[OFFSET:s[0-9]+]], 0xffffc
; SI: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], [[OFFSET]]
; CI: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x3ffff
; VIGFX9: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0xffffc
define amdgpu_ps void @smrd_load_const3(<4 x i32> addrspace(4)* inreg %arg, <4 x i32> addrspace(4)* inreg %arg1, <32 x i8> addrspace(4)* inreg %arg2, i32 inreg %arg3, <2 x i32> %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <3 x i32> %arg7, <2 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, float %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19) #0 {
main_body:
%tmp = getelementptr <4 x i32>, <4 x i32> addrspace(4)* %arg, i32 0
%tmp20 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp
%tmp21 = call float @llvm.SI.load.const.v4i32(<4 x i32> %tmp20, i32 1048572)
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %tmp21, float %tmp21, float %tmp21, float %tmp21, i1 true, i1 true) #0
ret void
}
; SMRD load with an offset greater than the largest possible immediate on VI
; GCN-LABEL: {{^}}smrd_load_const4:
; SIVIGFX9: s_mov_b32 [[OFFSET:s[0-9]+]], 0x100000
; SIVIGFX9: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], [[OFFSET]]
; CI: s_buffer_load_dword s{{[0-9]}}, s[{{[0-9]:[0-9]}}], 0x40000
; GCN: s_endpgm
define amdgpu_ps void @smrd_load_const4(<4 x i32> addrspace(4)* inreg %arg, <4 x i32> addrspace(4)* inreg %arg1, <32 x i8> addrspace(4)* inreg %arg2, i32 inreg %arg3, <2 x i32> %arg4, <2 x i32> %arg5, <2 x i32> %arg6, <3 x i32> %arg7, <2 x i32> %arg8, <2 x i32> %arg9, <2 x i32> %arg10, float %arg11, float %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, float %arg18, float %arg19) #0 {
main_body:
%tmp = getelementptr <4 x i32>, <4 x i32> addrspace(4)* %arg, i32 0
%tmp20 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp
%tmp21 = call float @llvm.SI.load.const.v4i32(<4 x i32> %tmp20, i32 1048576)
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %tmp21, float %tmp21, float %tmp21, float %tmp21, i1 true, i1 true) #0
ret void
}
; GCN-LABEL: {{^}}smrd_sgpr_offset:
; GCN: s_buffer_load_dword s{{[0-9]}}, s[0:3], s4
define amdgpu_ps float @smrd_sgpr_offset(<4 x i32> inreg %desc, i32 inreg %offset) #0 {
main_body:
%r = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %offset)
ret float %r
}
; GCN-LABEL: {{^}}smrd_vgpr_offset:
; GCN: buffer_load_dword v{{[0-9]}}, v0, s[0:3], 0 offen ;
define amdgpu_ps float @smrd_vgpr_offset(<4 x i32> inreg %desc, i32 %offset) #0 {
main_body:
%r = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %offset)
ret float %r
}
; GCN-LABEL: {{^}}smrd_vgpr_offset_imm:
; GCN-NEXT: %bb.
; GCN-NEXT: buffer_load_dword v{{[0-9]}}, v0, s[0:3], 0 offen offset:4095 ;
define amdgpu_ps float @smrd_vgpr_offset_imm(<4 x i32> inreg %desc, i32 %offset) #0 {
main_body:
%off = add i32 %offset, 4095
%r = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %off)
ret float %r
}
; GCN-LABEL: {{^}}smrd_vgpr_offset_imm_too_large:
; GCN-NEXT: %bb.
; GCN-NEXT: v_add_{{i|u}}32_e32 v0, {{(vcc, )?}}0x1000, v0
; GCN-NEXT: buffer_load_dword v{{[0-9]}}, v0, s[0:3], 0 offen ;
define amdgpu_ps float @smrd_vgpr_offset_imm_too_large(<4 x i32> inreg %desc, i32 %offset) #0 {
main_body:
%off = add i32 %offset, 4096
%r = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %off)
ret float %r
}
; GCN-LABEL: {{^}}smrd_imm_merged:
; GCN-NEXT: %bb.
; SICI-NEXT: s_buffer_load_dwordx4 s[{{[0-9]}}:{{[0-9]}}], s[0:3], 0x1
; SICI-NEXT: s_buffer_load_dwordx2 s[{{[0-9]}}:{{[0-9]}}], s[0:3], 0x7
; VIGFX9-NEXT: s_buffer_load_dwordx4 s[{{[0-9]}}:{{[0-9]}}], s[0:3], 0x4
; VIGFX9-NEXT: s_buffer_load_dwordx2 s[{{[0-9]}}:{{[0-9]}}], s[0:3], 0x1c
define amdgpu_ps void @smrd_imm_merged(<4 x i32> inreg %desc) #0 {
main_body:
%r1 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 4)
%r2 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 8)
%r3 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 12)
%r4 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 16)
%r5 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 28)
%r6 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 32)
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %r1, float %r2, float %r3, float %r4, i1 true, i1 true) #0
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %r5, float %r6, float undef, float undef, i1 true, i1 true) #0
ret void
}
; GCN-LABEL: {{^}}smrd_imm_merge_m0:
;
; SICIVI: s_buffer_load_dwordx2
; SICIVI: s_mov_b32 m0
; SICIVI_DAG: v_interp_p1_f32
; SICIVI_DAG: v_interp_p1_f32
; SICIVI_DAG: v_interp_p1_f32
; SICIVI_DAG: v_interp_p2_f32
; SICIVI_DAG: v_interp_p2_f32
; SICIVI_DAG: v_interp_p2_f32
; SICIVI: s_mov_b32 m0
; SICIVI: v_movrels_b32_e32
;
; Merging is still thwarted on GFX9 due to s_set_gpr_idx
;
; GFX9: s_buffer_load_dword
; GFX9: s_buffer_load_dword
define amdgpu_ps float @smrd_imm_merge_m0(<4 x i32> inreg %desc, i32 inreg %prim, float %u, float %v) #0 {
main_body:
%idx1.f = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 0)
%idx1 = bitcast float %idx1.f to i32
%v0.x1 = call nsz float @llvm.amdgcn.interp.p1(float %u, i32 0, i32 0, i32 %prim)
%v0.x = call nsz float @llvm.amdgcn.interp.p2(float %v0.x1, float %v, i32 0, i32 0, i32 %prim)
%v0.y1 = call nsz float @llvm.amdgcn.interp.p1(float %u, i32 0, i32 1, i32 %prim)
%v0.y = call nsz float @llvm.amdgcn.interp.p2(float %v0.y1, float %v, i32 0, i32 1, i32 %prim)
%v0.z1 = call nsz float @llvm.amdgcn.interp.p1(float %u, i32 0, i32 2, i32 %prim)
%v0.z = call nsz float @llvm.amdgcn.interp.p2(float %v0.z1, float %v, i32 0, i32 2, i32 %prim)
%v0.tmp0 = insertelement <3 x float> undef, float %v0.x, i32 0
%v0.tmp1 = insertelement <3 x float> %v0.tmp0, float %v0.y, i32 1
%v0 = insertelement <3 x float> %v0.tmp1, float %v0.z, i32 2
%a = extractelement <3 x float> %v0, i32 %idx1
%v1.x1 = call nsz float @llvm.amdgcn.interp.p1(float %u, i32 1, i32 0, i32 %prim)
%v1.x = call nsz float @llvm.amdgcn.interp.p2(float %v1.x1, float %v, i32 1, i32 0, i32 %prim)
%v1.y1 = call nsz float @llvm.amdgcn.interp.p1(float %u, i32 1, i32 1, i32 %prim)
%v1.y = call nsz float @llvm.amdgcn.interp.p2(float %v1.y1, float %v, i32 1, i32 1, i32 %prim)
%v1.z1 = call nsz float @llvm.amdgcn.interp.p1(float %u, i32 1, i32 2, i32 %prim)
%v1.z = call nsz float @llvm.amdgcn.interp.p2(float %v1.z1, float %v, i32 1, i32 2, i32 %prim)
%v1.tmp0 = insertelement <3 x float> undef, float %v0.x, i32 0
%v1.tmp1 = insertelement <3 x float> %v0.tmp0, float %v0.y, i32 1
%v1 = insertelement <3 x float> %v0.tmp1, float %v0.z, i32 2
%b = extractelement <3 x float> %v1, i32 %idx1
%c = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 4)
%res.tmp = fadd float %a, %b
%res = fadd float %res.tmp, %c
ret float %res
}
; GCN-LABEL: {{^}}smrd_vgpr_merged:
; GCN-NEXT: %bb.
; GCN-NEXT: buffer_load_dwordx4 v[{{[0-9]}}:{{[0-9]}}], v0, s[0:3], 0 offen offset:4
; GCN-NEXT: buffer_load_dwordx2 v[{{[0-9]}}:{{[0-9]}}], v0, s[0:3], 0 offen offset:28
define amdgpu_ps void @smrd_vgpr_merged(<4 x i32> inreg %desc, i32 %a) #0 {
main_body:
%a1 = add i32 %a, 4
%a2 = add i32 %a, 8
%a3 = add i32 %a, 12
%a4 = add i32 %a, 16
%a5 = add i32 %a, 28
%a6 = add i32 %a, 32
%r1 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %a1)
%r2 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %a2)
%r3 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %a3)
%r4 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %a4)
%r5 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %a5)
%r6 = call float @llvm.SI.load.const.v4i32(<4 x i32> %desc, i32 %a6)
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %r1, float %r2, float %r3, float %r4, i1 true, i1 true) #0
call void @llvm.amdgcn.exp.f32(i32 0, i32 15, float %r5, float %r6, float undef, float undef, i1 true, i1 true) #0
ret void
}
; GCN-LABEL: {{^}}smrd_sgpr_descriptor_promoted
; GCN: v_readfirstlane
define amdgpu_cs void @smrd_sgpr_descriptor_promoted([0 x i8] addrspace(4)* inreg noalias dereferenceable(18446744073709551615), i32) #0 {
main_body:
%descptr = bitcast [0 x i8] addrspace(4)* %0 to <4 x i32> addrspace(4)*, !amdgpu.uniform !0
br label %.outer_loop_header
ret_block: ; preds = %.outer, %.label22, %main_body
ret void
.outer_loop_header:
br label %.inner_loop_header
.inner_loop_header: ; preds = %.inner_loop_body, %.outer_loop_header
%loopctr.1 = phi i32 [ 0, %.outer_loop_header ], [ %loopctr.2, %.inner_loop_body ]
%loopctr.2 = add i32 %loopctr.1, 1
%inner_br1 = icmp slt i32 %loopctr.2, 10
br i1 %inner_br1, label %.inner_loop_body, label %ret_block
.inner_loop_body:
%descriptor = load <4 x i32>, <4 x i32> addrspace(4)* %descptr, align 16, !invariant.load !0
%load1result = call float @llvm.SI.load.const.v4i32(<4 x i32> %descriptor, i32 0)
%inner_br2 = icmp uge i32 %1, 10
br i1 %inner_br2, label %.inner_loop_header, label %.outer_loop_body
.outer_loop_body:
%offset = shl i32 %loopctr.2, 6
%load2result = call float @llvm.SI.load.const.v4i32(<4 x i32> %descriptor, i32 %offset)
%outer_br = fcmp ueq float %load2result, 0x0
br i1 %outer_br, label %.outer_loop_header, label %ret_block
}
declare void @llvm.amdgcn.exp.f32(i32, i32, float, float, float, float, i1, i1) #0
declare float @llvm.SI.load.const.v4i32(<4 x i32>, i32) #1
declare float @llvm.amdgcn.interp.p1(float, i32, i32, i32) #2
declare float @llvm.amdgcn.interp.p2(float, float, i32, i32, i32) #2
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }
attributes #2 = { nounwind readnone speculatable }
!0 = !{}
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