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clang-p2996/llvm/test/CodeGen/AMDGPU/select-vectors.ll
Tom Stellard 0d23ebe888 AMDGPU/SI: Implement a custom MachineSchedStrategy 
Summary:
GCNSchedStrategy re-uses most of GenericScheduler, it's just uses
a different method to compute the excess and critical register
pressure limits.

It's not enabled by default, to enable it you need to pass -misched=gcn
to llc.

Shader DB stats:

32464 shaders in 17874 tests
Totals:
SGPRS: 1542846 -> 1643125 (6.50 %)
VGPRS: 1005595 -> 904653 (-10.04 %)
Spilled SGPRs: 29929 -> 27745 (-7.30 %)
Spilled VGPRs: 334 -> 352 (5.39 %)
Scratch VGPRs: 1612 -> 1624 (0.74 %) dwords per thread
Code Size: 36688188 -> 37034900 (0.95 %) bytes
LDS: 1913 -> 1913 (0.00 %) blocks
Max Waves: 254101 -> 265125 (4.34 %)
Wait states: 0 -> 0 (0.00 %)

Totals from affected shaders:
SGPRS: 1338220 -> 1438499 (7.49 %)
VGPRS: 886221 -> 785279 (-11.39 %)
Spilled SGPRs: 29869 -> 27685 (-7.31 %)
Spilled VGPRs: 334 -> 352 (5.39 %)
Scratch VGPRs: 1612 -> 1624 (0.74 %) dwords per thread
Code Size: 34315716 -> 34662428 (1.01 %) bytes
LDS: 1551 -> 1551 (0.00 %) blocks
Max Waves: 188127 -> 199151 (5.86 %)
Wait states: 0 -> 0 (0.00 %)

Reviewers: arsenm, mareko, nhaehnle, MatzeB, atrick

Subscribers: arsenm, kzhuravl, llvm-commits

Differential Revision: https://reviews.llvm.org/D23688

llvm-svn: 279995
2016-08-29 19:42:52 +00:00

220 lines
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; RUN: llc -verify-machineinstrs -march=amdgcn < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tonga < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; Test expansion of scalar selects on vectors.
; Evergreen not enabled since it seems to be having problems with doubles.
; FUNC-LABEL: {{^}}select_v4i8:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
define void @select_v4i8(<4 x i8> addrspace(1)* %out, <4 x i8> %a, <4 x i8> %b, i8 %c) nounwind {
%cmp = icmp eq i8 %c, 0
%select = select i1 %cmp, <4 x i8> %a, <4 x i8> %b
store <4 x i8> %select, <4 x i8> addrspace(1)* %out, align 4
ret void
}
; FUNC-LABEL: {{^}}select_v4i16:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
define void @select_v4i16(<4 x i16> addrspace(1)* %out, <4 x i16> %a, <4 x i16> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <4 x i16> %a, <4 x i16> %b
store <4 x i16> %select, <4 x i16> addrspace(1)* %out, align 4
ret void
}
; FIXME: Expansion with bitwise operations may be better if doing a
; vector select with SGPR inputs.
; FUNC-LABEL: {{^}}s_select_v2i32:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: buffer_store_dwordx2
define void @s_select_v2i32(<2 x i32> addrspace(1)* %out, <2 x i32> %a, <2 x i32> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <2 x i32> %a, <2 x i32> %b
store <2 x i32> %select, <2 x i32> addrspace(1)* %out, align 8
ret void
}
; FUNC-LABEL: {{^}}s_select_v4i32:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: buffer_store_dwordx4
define void @s_select_v4i32(<4 x i32> addrspace(1)* %out, <4 x i32> %a, <4 x i32> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <4 x i32> %a, <4 x i32> %b
store <4 x i32> %select, <4 x i32> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}v_select_v4i32:
; SI: buffer_load_dwordx4
; SI: v_cmp_gt_u32_e64 vcc, 32, s{{[0-9]+}}
; SI: v_cndmask_b32_e32 v{{[0-9]+}}, 0, v{{[0-9]+}}
; SI: v_cndmask_b32_e32 v{{[0-9]+}}, 0, v{{[0-9]+}}
; SI: v_cndmask_b32_e32 v{{[0-9]+}}, 0, v{{[0-9]+}}
; SI: v_cndmask_b32_e32 v{{[0-9]+}}, 0, v{{[0-9]+}}
; SI: buffer_store_dwordx4
define void @v_select_v4i32(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in, i32 %cond) #0 {
bb:
%tmp2 = icmp ult i32 %cond, 32
%val = load <4 x i32>, <4 x i32> addrspace(1)* %in
%tmp3 = select i1 %tmp2, <4 x i32> %val, <4 x i32> zeroinitializer
store <4 x i32> %tmp3, <4 x i32> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}select_v8i32:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
define void @select_v8i32(<8 x i32> addrspace(1)* %out, <8 x i32> %a, <8 x i32> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <8 x i32> %a, <8 x i32> %b
store <8 x i32> %select, <8 x i32> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}s_select_v2f32:
; SI-DAG: s_load_dwordx2 s{{\[}}[[ALO:[0-9]+]]:[[AHI:[0-9]+]]{{\]}}, s{{\[[0-9]+:[0-9]+\]}}, {{0xb|0x2c}}
; SI-DAG: s_load_dwordx2 s{{\[}}[[BLO:[0-9]+]]:[[BHI:[0-9]+]]{{\]}}, s{{\[[0-9]+:[0-9]+\]}}, {{0xd|0x34}}
; SI-DAG: v_mov_b32_e32 v{{[0-9]+}}, s[[AHI]]
; SI-DAG: v_mov_b32_e32 v{{[0-9]+}}, s[[BHI]]
; SI-DAG: v_mov_b32_e32 v{{[0-9]+}}, s[[ALO]]
; SI-DAG: v_cmp_eq_i32_e64 vcc, 0, s{{[0-9]+}}
; SI: v_cndmask_b32_e32
; SI: v_mov_b32_e32 v{{[0-9]+}}, s[[BLO]]
; SI: v_cndmask_b32_e32
; SI: buffer_store_dwordx2
define void @s_select_v2f32(<2 x float> addrspace(1)* %out, <2 x float> %a, <2 x float> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <2 x float> %a, <2 x float> %b
store <2 x float> %select, <2 x float> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}s_select_v4f32:
; SI: s_load_dwordx4
; SI: s_load_dwordx4
; SI: v_cmp_eq_i32_e64 vcc, 0, s{{[0-9]+}}
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: buffer_store_dwordx4
define void @s_select_v4f32(<4 x float> addrspace(1)* %out, <4 x float> %a, <4 x float> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <4 x float> %a, <4 x float> %b
store <4 x float> %select, <4 x float> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}v_select_v4f32:
; SI: buffer_load_dwordx4
; SI: v_cmp_gt_u32_e64 vcc, 32, s{{[0-9]+}}
; SI: v_cndmask_b32_e32 v{{[0-9]+}}, 0, v{{[0-9]+}}
; SI: v_cndmask_b32_e32 v{{[0-9]+}}, 0, v{{[0-9]+}}
; SI: v_cndmask_b32_e32 v{{[0-9]+}}, 0, v{{[0-9]+}}
; SI: v_cndmask_b32_e32 v{{[0-9]+}}, 0, v{{[0-9]+}}
; SI: buffer_store_dwordx4
define void @v_select_v4f32(<4 x float> addrspace(1)* %out, <4 x float> addrspace(1)* %in, i32 %cond) #0 {
bb:
%tmp2 = icmp ult i32 %cond, 32
%val = load <4 x float>, <4 x float> addrspace(1)* %in
%tmp3 = select i1 %tmp2, <4 x float> %val, <4 x float> zeroinitializer
store <4 x float> %tmp3, <4 x float> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}select_v8f32:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
define void @select_v8f32(<8 x float> addrspace(1)* %out, <8 x float> %a, <8 x float> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <8 x float> %a, <8 x float> %b
store <8 x float> %select, <8 x float> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}select_v2f64:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
define void @select_v2f64(<2 x double> addrspace(1)* %out, <2 x double> %a, <2 x double> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <2 x double> %a, <2 x double> %b
store <2 x double> %select, <2 x double> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}select_v4f64:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
define void @select_v4f64(<4 x double> addrspace(1)* %out, <4 x double> %a, <4 x double> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <4 x double> %a, <4 x double> %b
store <4 x double> %select, <4 x double> addrspace(1)* %out, align 16
ret void
}
; FUNC-LABEL: {{^}}select_v8f64:
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
; SI: v_cndmask_b32_e32
define void @select_v8f64(<8 x double> addrspace(1)* %out, <8 x double> %a, <8 x double> %b, i32 %c) nounwind {
%cmp = icmp eq i32 %c, 0
%select = select i1 %cmp, <8 x double> %a, <8 x double> %b
store <8 x double> %select, <8 x double> addrspace(1)* %out, align 16
ret void
}
; Function Attrs: nounwind readnone
declare i32 @llvm.amdgcn.workitem.id.x() #1
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }
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