================
@@ -0,0 +1,261 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
UTC_ARGS: --version 5
+# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx942
-run-pass=greedy,amdgpu-rewrite-agpr-copy-mfma -verify-machineinstrs -o - %s |
FileCheck %s
+
+---
+name: test_rewrite_mfma_copy_from_agpr_physreg
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5, $agpr0_agpr1
+
+ ; CHECK-LABEL: name: test_rewrite_mfma_copy_from_agpr_physreg
+ ; CHECK: liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5,
$agpr0_agpr1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:vreg_64_align2 = COPY $vgpr4_vgpr5
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:av_64_align2 = COPY $vgpr0_vgpr1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:av_64_align2 = COPY $vgpr2_vgpr3
+ ; CHECK-NEXT: [[COPY3:%[0-9]+]]:vreg_64_align2 = COPY $agpr0_agpr1
+ ; CHECK-NEXT: [[V_MFMA_F64_4X4X4F64_vgprcd_e64_:%[0-9]+]]:vreg_64_align2 =
V_MFMA_F64_4X4X4F64_vgprcd_e64 [[COPY1]], [[COPY2]], [[COPY3]], 0, 0, 0,
implicit $mode, implicit $exec
+ ; CHECK-NEXT: GLOBAL_STORE_DWORDX2 [[COPY]],
[[V_MFMA_F64_4X4X4F64_vgprcd_e64_]], 0, 0, implicit $exec :: (store (s64),
addrspace 1)
+ ; CHECK-NEXT: SI_RETURN
+ %0:vreg_64_align2 = COPY $vgpr4_vgpr5
+ %1:av_64_align2 = COPY $vgpr0_vgpr1
+ %2:av_64_align2 = COPY $vgpr2_vgpr3
+ %3:vreg_64_align2 = COPY $agpr0_agpr1
+ %4:vreg_64_align2 = V_MFMA_F64_4X4X4F64_vgprcd_e64 %1, %2, %3, 0, 0, 0,
implicit $mode, implicit $exec
+ GLOBAL_STORE_DWORDX2 %0, %4, 0, 0, implicit $exec :: (store (s64),
addrspace 1)
+ SI_RETURN
+...
+
+---
+name: test_rewrite_mfma_copy_from_agpr_unrewritable_use
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+
+ ; CHECK-LABEL: name: test_rewrite_mfma_copy_from_agpr_unrewritable_use
+ ; CHECK: liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:vreg_64_align2 = COPY $vgpr4_vgpr5
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:av_64_align2 = COPY $vgpr0_vgpr1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:av_64_align2 = COPY $vgpr2_vgpr3
+ ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX4_:%[0-9]+]]:areg_128_align2 =
GLOBAL_LOAD_DWORDX4 [[COPY]], 0, 0, implicit $exec :: (load (s128), addrspace 1)
+ ; CHECK-NEXT: [[COPY3:%[0-9]+]]:vreg_128_align2 = COPY
[[GLOBAL_LOAD_DWORDX4_]]
+ ; CHECK-NEXT: [[V_MFMA_F64_4X4X4F64_vgprcd_e64_:%[0-9]+]]:vreg_64_align2 =
V_MFMA_F64_4X4X4F64_vgprcd_e64 [[COPY1]], [[COPY2]], [[COPY3]].sub0_sub1, 0, 0,
0, implicit $mode, implicit $exec
+ ; CHECK-NEXT: INLINEASM &"; use $0", 1 /* sideeffect attdialect */,
3866633 /* reguse:VReg_64_Align2 */, [[V_MFMA_F64_4X4X4F64_vgprcd_e64_]]
+ ; CHECK-NEXT: SI_RETURN
+ %0:vreg_64_align2 = COPY $vgpr4_vgpr5
+ %1:av_64_align2 = COPY $vgpr0_vgpr1
+ %2:av_64_align2 = COPY $vgpr2_vgpr3
+ %3:areg_128_align2 = GLOBAL_LOAD_DWORDX4 %0, 0, 0, implicit $exec :: (load
(s128), addrspace 1)
+ %4:vreg_128_align2 = COPY %3
+ %5:vreg_64_align2 = V_MFMA_F64_4X4X4F64_vgprcd_e64 %1, %2, %4.sub0_sub1,
0, 0, 0, implicit $mode, implicit $exec
+ INLINEASM &"; use $0", 1 /* sideeffect attdialect */, 3866633 /*
reguse:VReg_64_Align2 */, %5
+ SI_RETURN
+...
+
+---
+name: test_rewrite_mfma_copy_from_agpr_src2_subreg_use
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+
+ ; CHECK-LABEL: name: test_rewrite_mfma_copy_from_agpr_src2_subreg_use
+ ; CHECK: liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:vreg_64_align2 = COPY $vgpr4_vgpr5
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:av_64_align2 = COPY $vgpr0_vgpr1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:av_64_align2 = COPY $vgpr2_vgpr3
+ ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX4_:%[0-9]+]]:areg_128_align2 =
GLOBAL_LOAD_DWORDX4 [[COPY]], 0, 0, implicit $exec :: (load (s128), addrspace 1)
+ ; CHECK-NEXT: [[COPY3:%[0-9]+]]:vreg_128_align2 = COPY
[[GLOBAL_LOAD_DWORDX4_]]
+ ; CHECK-NEXT: [[V_MFMA_F64_4X4X4F64_vgprcd_e64_:%[0-9]+]]:vreg_64_align2 =
V_MFMA_F64_4X4X4F64_vgprcd_e64 [[COPY1]], [[COPY2]], [[COPY3]].sub0_sub1, 0, 0,
0, implicit $mode, implicit $exec
+ ; CHECK-NEXT: GLOBAL_STORE_DWORDX2 [[COPY]],
[[V_MFMA_F64_4X4X4F64_vgprcd_e64_]], 0, 0, implicit $exec :: (store (s64),
addrspace 1)
+ ; CHECK-NEXT: SI_RETURN
+ %0:vreg_64_align2 = COPY $vgpr4_vgpr5
+ %1:av_64_align2 = COPY $vgpr0_vgpr1
+ %2:av_64_align2 = COPY $vgpr2_vgpr3
+ %3:areg_128_align2 = GLOBAL_LOAD_DWORDX4 %0, 0, 0, implicit $exec :: (load
(s128), addrspace 1)
+ %4:vreg_128_align2 = COPY %3
+ %5:vreg_64_align2 = V_MFMA_F64_4X4X4F64_vgprcd_e64 %1, %2, %4.sub0_sub1,
0, 0, 0, implicit $mode, implicit $exec
+ GLOBAL_STORE_DWORDX2 %0, %5, 0, 0, implicit $exec :: (store (s64),
addrspace 1)
+ SI_RETURN
+...
+
+---
+name: test_rewrite_mfma_copy_from_agpr_vdst_subreg_use
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+
+ ; CHECK-LABEL: name: test_rewrite_mfma_copy_from_agpr_vdst_subreg_use
+ ; CHECK: liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:vreg_64_align2 = COPY $vgpr4_vgpr5
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:av_64_align2 = COPY $vgpr0_vgpr1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:av_64_align2 = COPY $vgpr2_vgpr3
+ ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX4_:%[0-9]+]]:areg_128_align2 =
GLOBAL_LOAD_DWORDX4 [[COPY]], 0, 0, implicit $exec :: (load (s128), addrspace 1)
+ ; CHECK-NEXT: [[COPY3:%[0-9]+]]:vreg_128_align2 = COPY
[[GLOBAL_LOAD_DWORDX4_]]
+ ; CHECK-NEXT: [[COPY3:%[0-9]+]].sub0_sub1:vreg_128_align2 =
V_MFMA_F64_4X4X4F64_vgprcd_e64 [[COPY1]], [[COPY2]], [[COPY3]].sub2_sub3, 0, 0,
0, implicit $mode, implicit $exec
+ ; CHECK-NEXT: GLOBAL_STORE_DWORDX4 [[COPY]], [[COPY3]], 0, 0, implicit
$exec :: (store (s128), addrspace 1)
+ ; CHECK-NEXT: SI_RETURN
+ %0:vreg_64_align2 = COPY $vgpr4_vgpr5
+ %1:av_64_align2 = COPY $vgpr0_vgpr1
+ %2:av_64_align2 = COPY $vgpr2_vgpr3
+ %3:areg_128_align2 = GLOBAL_LOAD_DWORDX4 %0, 0, 0, implicit $exec :: (load
(s128), addrspace 1)
+ %4:vreg_128_align2 = COPY %3
+ %4.sub0_sub1:vreg_128_align2 = V_MFMA_F64_4X4X4F64_vgprcd_e64 %1, %2,
%4.sub2_sub3, 0, 0, 0, implicit $mode, implicit $exec
+ GLOBAL_STORE_DWORDX4 %0, %4, 0, 0, implicit $exec :: (store (s128),
addrspace 1)
+ SI_RETURN
+...
+
+# A-to-V copy is performed subregister at a time instead.
+---
+name: test_rewrite_mfma_copy_from_agpr_split_copy
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+
+ ; CHECK-LABEL: name: test_rewrite_mfma_copy_from_agpr_split_copy
+ ; CHECK: liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:vreg_64_align2 = COPY $vgpr4_vgpr5
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:av_64_align2 = COPY $vgpr0_vgpr1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:av_64_align2 = COPY $vgpr2_vgpr3
+ ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX2_:%[0-9]+]]:areg_64_align2 =
GLOBAL_LOAD_DWORDX2 [[COPY]], 0, 0, implicit $exec :: (load (s64), addrspace 1)
+ ; CHECK-NEXT: undef [[COPY3:%[0-9]+]].sub0:vreg_64_align2 = COPY
[[GLOBAL_LOAD_DWORDX2_]].sub0
+ ; CHECK-NEXT: [[COPY3:%[0-9]+]].sub1:vreg_64_align2 = COPY
[[GLOBAL_LOAD_DWORDX2_]].sub1
+ ; CHECK-NEXT: [[V_MFMA_F64_4X4X4F64_vgprcd_e64_:%[0-9]+]]:vreg_64_align2 =
V_MFMA_F64_4X4X4F64_vgprcd_e64 [[COPY1]], [[COPY2]], [[COPY3]], 0, 0, 0,
implicit $mode, implicit $exec
+ ; CHECK-NEXT: GLOBAL_STORE_DWORDX2 [[COPY]],
[[V_MFMA_F64_4X4X4F64_vgprcd_e64_]], 0, 0, implicit $exec :: (store (s64),
addrspace 1)
+ ; CHECK-NEXT: SI_RETURN
+ %0:vreg_64_align2 = COPY $vgpr4_vgpr5
+ %1:av_64_align2 = COPY $vgpr0_vgpr1
+ %2:av_64_align2 = COPY $vgpr2_vgpr3
+ %3:areg_64_align2 = GLOBAL_LOAD_DWORDX2 %0, 0, 0, implicit $exec :: (load
(s64), addrspace 1)
+ undef %4.sub0:vreg_64_align2 = COPY %3.sub0
+ %4.sub1:vreg_64_align2 = COPY %3.sub1
+ %5:vreg_64_align2 = V_MFMA_F64_4X4X4F64_vgprcd_e64 %1, %2, %4, 0, 0, 0,
implicit $mode, implicit $exec
+ GLOBAL_STORE_DWORDX2 %0, %5, 0, 0, implicit $exec :: (store (s64),
addrspace 1)
+ SI_RETURN
+...
+
+---
+name: test_rewrite_mfma_copy_from_agpr_copyback
+tracksRegLiveness: true
+body: |
+ bb.0:
+ liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+
+ ; CHECK-LABEL: name: test_rewrite_mfma_copy_from_agpr_copyback
+ ; CHECK: liveins: $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:vreg_64_align2 = COPY $vgpr4_vgpr5
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:av_64_align2 = COPY $vgpr0_vgpr1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:av_64_align2 = COPY $vgpr2_vgpr3
+ ; CHECK-NEXT: [[GLOBAL_LOAD_DWORDX2_:%[0-9]+]]:areg_64_align2 =
GLOBAL_LOAD_DWORDX2 [[COPY]], 0, 0, implicit $exec :: (load (s64), addrspace 1)
+ ; CHECK-NEXT: [[COPY3:%[0-9]+]]:areg_64_align2 = COPY
[[GLOBAL_LOAD_DWORDX2_]]
+ ; CHECK-NEXT: [[V_MFMA_F64_4X4X4F64_e64_:%[0-9]+]]:areg_64_align2 =
V_MFMA_F64_4X4X4F64_e64 [[COPY1]], [[COPY2]], [[COPY3]], 0, 0, 0, implicit
$mode, implicit $exec
+ ; CHECK-NEXT: [[COPY4:%[0-9]+]]:areg_64_align2 = COPY
[[V_MFMA_F64_4X4X4F64_e64_]]
+ ; CHECK-NEXT: GLOBAL_STORE_DWORDX2 [[COPY]], [[COPY4]], 0, 0, implicit
$exec :: (store (s64), addrspace 1)
+ ; CHECK-NEXT: SI_RETURN
+ %0:vreg_64_align2 = COPY $vgpr4_vgpr5
+ %1:av_64_align2 = COPY $vgpr0_vgpr1
+ %2:av_64_align2 = COPY $vgpr2_vgpr3
+ %3:areg_64_align2 = GLOBAL_LOAD_DWORDX2 %0, 0, 0, implicit $exec :: (load
(s64), addrspace 1)
+ %4:vreg_64_align2 = COPY %3
+ %5:vreg_64_align2 = V_MFMA_F64_4X4X4F64_vgprcd_e64 %1, %2, %4, 0, 0, 0,
implicit $mode, implicit $exec
+ %6:areg_64_align2 = COPY %5
+ GLOBAL_STORE_DWORDX2 %0, %6, 0, 0, implicit $exec :: (store (s64),
addrspace 1)
+ SI_RETURN
+...
+
+# There is a read of the coy-from-agpr in the dst operand of the MFMA.
----------------
perlfu wrote:
```suggestion
# There is a read of the copy from AGPR to VGPR in the dst operand of the MFMA.
```
https://github.com/llvm/llvm-project/pull/153020
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