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756309c45b
Summary: They correspond to BUFFER_LOAD/STORE_DWORD[_X2,X3,X4] and mostly behave like llvm.amdgcn.buffer.load/store.format. They will be used by Mesa for SSBO and atomic counters at least when robust buffer access behavior is desired. (These instructions perform no format conversion and do buffer range checking per component.) As a side effect of sharing patterns with llvm.amdgcn.buffer.store.format, it has become trivial to add support for the f32 and v2f32 variants of that intrinsic, so the patch does so. Also DAG-ify (and fix) some tests that I noticed intermittent failures in while developing this patch. Some tests were (temporarily) adjusted for the required mayLoad/hasSideEffects changes to the BUFFER_STORE_DWORD* instructions. See also http://reviews.llvm.org/D18291. Reviewers: arsenm, tstellarAMD, mareko Subscribers: arsenm, llvm-commits Differential Revision: http://reviews.llvm.org/D18292 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266126 91177308-0d34-0410-b5e6-96231b3b80d8
109 lines
4.4 KiB
LLVM
109 lines
4.4 KiB
LLVM
;RUN: llc < %s -march=amdgcn -mcpu=verde -verify-machineinstrs | FileCheck %s
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;RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck %s
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;CHECK-LABEL: {{^}}buffer_load:
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;CHECK: buffer_load_dwordx4 v[0:3], s[0:3], 0
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;CHECK: buffer_load_dwordx4 v[4:7], s[0:3], 0 glc
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;CHECK: buffer_load_dwordx4 v[8:11], s[0:3], 0 slc
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;CHECK: s_waitcnt
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define amdgpu_ps {<4 x float>, <4 x float>, <4 x float>} @buffer_load(<4 x i32> inreg) {
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main_body:
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%data = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 0, i32 0, i1 0, i1 0)
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%data_glc = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 0, i32 0, i1 1, i1 0)
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%data_slc = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 0, i32 0, i1 0, i1 1)
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%r0 = insertvalue {<4 x float>, <4 x float>, <4 x float>} undef, <4 x float> %data, 0
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%r1 = insertvalue {<4 x float>, <4 x float>, <4 x float>} %r0, <4 x float> %data_glc, 1
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%r2 = insertvalue {<4 x float>, <4 x float>, <4 x float>} %r1, <4 x float> %data_slc, 2
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ret {<4 x float>, <4 x float>, <4 x float>} %r2
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}
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;CHECK-LABEL: {{^}}buffer_load_immoffs:
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;CHECK: buffer_load_dwordx4 v[0:3], s[0:3], 0 offset:42
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;CHECK: s_waitcnt
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define amdgpu_ps <4 x float> @buffer_load_immoffs(<4 x i32> inreg) {
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main_body:
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%data = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 0, i32 42, i1 0, i1 0)
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ret <4 x float> %data
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}
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;CHECK-LABEL: {{^}}buffer_load_immoffs_large:
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;CHECK: s_movk_i32 [[OFFSET:s[0-9]+]], 0x1fff
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;CHECK: buffer_load_dwordx4 v[0:3], s[0:3], [[OFFSET]] offset:1
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;CHECK: s_waitcnt
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define amdgpu_ps <4 x float> @buffer_load_immoffs_large(<4 x i32> inreg) {
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main_body:
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%data = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 0, i32 8192, i1 0, i1 0)
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ret <4 x float> %data
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}
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;CHECK-LABEL: {{^}}buffer_load_idx:
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;CHECK: buffer_load_dwordx4 v[0:3], v0, s[0:3], 0 idxen
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;CHECK: s_waitcnt
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define amdgpu_ps <4 x float> @buffer_load_idx(<4 x i32> inreg, i32) {
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main_body:
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%data = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 %1, i32 0, i1 0, i1 0)
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ret <4 x float> %data
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}
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;CHECK-LABEL: {{^}}buffer_load_ofs:
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;CHECK: buffer_load_dwordx4 v[0:3], v0, s[0:3], 0 offen
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;CHECK: s_waitcnt
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define amdgpu_ps <4 x float> @buffer_load_ofs(<4 x i32> inreg, i32) {
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main_body:
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%data = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 0, i32 %1, i1 0, i1 0)
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ret <4 x float> %data
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}
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;CHECK-LABEL: {{^}}buffer_load_ofs_imm:
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;CHECK: buffer_load_dwordx4 v[0:3], v0, s[0:3], 0 offen offset:58
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;CHECK: s_waitcnt
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define amdgpu_ps <4 x float> @buffer_load_ofs_imm(<4 x i32> inreg, i32) {
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main_body:
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%ofs = add i32 %1, 58
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%data = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 0, i32 %ofs, i1 0, i1 0)
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ret <4 x float> %data
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}
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;CHECK-LABEL: {{^}}buffer_load_both:
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;CHECK: buffer_load_dwordx4 v[0:3], v[0:1], s[0:3], 0 idxen offen
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;CHECK: s_waitcnt
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define amdgpu_ps <4 x float> @buffer_load_both(<4 x i32> inreg, i32, i32) {
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main_body:
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%data = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 %1, i32 %2, i1 0, i1 0)
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ret <4 x float> %data
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}
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;CHECK-LABEL: {{^}}buffer_load_both_reversed:
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;CHECK: v_mov_b32_e32 v2, v0
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;CHECK: buffer_load_dwordx4 v[0:3], v[1:2], s[0:3], 0 idxen offen
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;CHECK: s_waitcnt
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define amdgpu_ps <4 x float> @buffer_load_both_reversed(<4 x i32> inreg, i32, i32) {
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main_body:
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%data = call <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32> %0, i32 %2, i32 %1, i1 0, i1 0)
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ret <4 x float> %data
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}
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;CHECK-LABEL: {{^}}buffer_load_x1:
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;CHECK: buffer_load_dword v0, v[0:1], s[0:3], 0 idxen offen
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;CHECK: s_waitcnt
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define amdgpu_ps float @buffer_load_x1(<4 x i32> inreg %rsrc, i32 %idx, i32 %ofs) {
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main_body:
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%data = call float @llvm.amdgcn.buffer.load.f32(<4 x i32> %rsrc, i32 %idx, i32 %ofs, i1 0, i1 0)
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ret float %data
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}
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;CHECK-LABEL: {{^}}buffer_load_x2:
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;CHECK: buffer_load_dwordx2 v[0:1], v[0:1], s[0:3], 0 idxen offen
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;CHECK: s_waitcnt
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define amdgpu_ps <2 x float> @buffer_load_x2(<4 x i32> inreg %rsrc, i32 %idx, i32 %ofs) {
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main_body:
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%data = call <2 x float> @llvm.amdgcn.buffer.load.v2f32(<4 x i32> %rsrc, i32 %idx, i32 %ofs, i1 0, i1 0)
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ret <2 x float> %data
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}
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declare float @llvm.amdgcn.buffer.load.f32(<4 x i32>, i32, i32, i1, i1) #0
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declare <2 x float> @llvm.amdgcn.buffer.load.v2f32(<4 x i32>, i32, i32, i1, i1) #0
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declare <4 x float> @llvm.amdgcn.buffer.load.v4f32(<4 x i32>, i32, i32, i1, i1) #0
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attributes #0 = { nounwind readonly }
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