[llvm] 17a3385 - [AMDGPU] Test for in-order waitcnt insertion for bvh instructions

Thu Dec 2 06:26:01 PST 2021

Author: David Stuttard
Date: 2021-12-02T14:25:37Z
New Revision: 17a3385c3538530dc06851559a62eb8ec15f88d1

URL: https://github.com/llvm/llvm-project/commit/17a3385c3538530dc06851559a62eb8ec15f88d1
DIFF: https://github.com/llvm/llvm-project/commit/17a3385c3538530dc06851559a62eb8ec15f88d1.diff

LOG: [AMDGPU] Test for in-order waitcnt insertion for bvh instructions

In-order bvh instructions don't require a waitcnt as order is
guaranteed.

However, waitcnt IS required for other image instruction types vs
bvh.

Pre-commit test for new functionality in https://reviews.llvm.org/D114794

Differential Revision: https://reviews.llvm.org/D114792

Added: 
    llvm/test/CodeGen/AMDGPU/waitcnt-bvh.mir

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/CodeGen/AMDGPU/waitcnt-bvh.mir b/llvm/test/CodeGen/AMDGPU/waitcnt-bvh.mir
new file mode 100644
index 000000000000..34316179ed4a

--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/waitcnt-bvh.mir
@@ -0,0 +1,75 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -march=amdgcn -mcpu=gfx1030 -run-pass=si-insert-waitcnts -verify-machineinstrs %s -o - | FileCheck -check-prefix=GCN %s
+
+---
+name: waitcnt-check-inorder
+body: |
+  bb.0:
+    ; GCN-LABEL: name: waitcnt-check-inorder
+    ; GCN: S_WAITCNT 0
+    ; GCN-NEXT: S_WAITCNT_VSCNT undef $sgpr_null, 0
+    ; GCN-NEXT: $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    ; GCN-NEXT: $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr20_vgpr21_vgpr22_vgpr23_vgpr24_vgpr25_vgpr26_vgpr27_vgpr28_vgpr29_vgpr30_vgpr31_vgpr32_vgpr33_vgpr34_vgpr35, killed renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    ; GCN-NEXT: S_ENDPGM 0
+    $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr20_vgpr21_vgpr22_vgpr23_vgpr24_vgpr25_vgpr26_vgpr27_vgpr28_vgpr29_vgpr30_vgpr31_vgpr32_vgpr33_vgpr34_vgpr35, killed renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    S_ENDPGM 0
+...
+---
+name: waitcnt-check-vs-vmem
+body: |
+  bb.0:
+    ; GCN-LABEL: name: waitcnt-check-vs-vmem
+    ; GCN: S_WAITCNT 0
+    ; GCN-NEXT: S_WAITCNT_VSCNT undef $sgpr_null, 0
+    ; GCN-NEXT: $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    ; GCN-NEXT: $vgpr0 = BUFFER_LOAD_DWORD_OFFEN $vgpr16, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 0, 0, 0, 0, implicit $exec
+    ; GCN-NEXT: S_ENDPGM 0
+    $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    $vgpr0 = BUFFER_LOAD_DWORD_OFFEN $vgpr16, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 0, 0, 0, 0, implicit $exec
+    S_ENDPGM 0
+...
+---
+name: waitcnt-check-vs-mimg-samp
+body: |
+  bb.0:
+    ; GCN-LABEL: name: waitcnt-check-vs-mimg-samp
+    ; GCN: S_WAITCNT 0
+    ; GCN-NEXT: S_WAITCNT_VSCNT undef $sgpr_null, 0
+    ; GCN-NEXT: $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, killed renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    ; GCN-NEXT: S_WAITCNT 16240
+    ; GCN-NEXT: $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_SAMPLE_V4_V2 $vgpr20_vgpr21, $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11, $sgpr0_sgpr1_sgpr2_sgpr3, 15, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load (s128), align 4, addrspace 4)
+    ; GCN-NEXT: S_ENDPGM 0
+    $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, killed renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_SAMPLE_V4_V2 $vgpr20_vgpr21, $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11, $sgpr0_sgpr1_sgpr2_sgpr3, 15, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load (s128), align 4, addrspace 4)
+    S_ENDPGM 0
+...
+---
+name: waitcnt-check-vs-vmem-reverse
+body: |
+  bb.0:
+    ; GCN-LABEL: name: waitcnt-check-vs-vmem-reverse
+    ; GCN: S_WAITCNT 0
+    ; GCN-NEXT: S_WAITCNT_VSCNT undef $sgpr_null, 0
+    ; GCN-NEXT: $vgpr0 = BUFFER_LOAD_DWORD_OFFEN $vgpr20, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 0, 0, 0, 0, implicit $exec
+    ; GCN-NEXT: $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, killed renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    ; GCN-NEXT: S_ENDPGM 0
+    $vgpr0 = BUFFER_LOAD_DWORD_OFFEN $vgpr20, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 0, 0, 0, 0, implicit $exec
+    $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, killed renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    S_ENDPGM 0
+...
+---
+name: waitcnt-check-vs-mimg-samp-reverse
+body: |
+  bb.0:
+    ; GCN-LABEL: name: waitcnt-check-vs-mimg-samp-reverse
+    ; GCN: S_WAITCNT 0
+    ; GCN-NEXT: S_WAITCNT_VSCNT undef $sgpr_null, 0
+    ; GCN-NEXT: $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_SAMPLE_V4_V2 $vgpr16_vgpr17, $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11, $sgpr0_sgpr1_sgpr2_sgpr3, 15, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load (s128), align 4, addrspace 4)
+    ; GCN-NEXT: S_WAITCNT 16240
+    ; GCN-NEXT: $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, killed renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    ; GCN-NEXT: S_ENDPGM 0
+    $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_SAMPLE_V4_V2 $vgpr16_vgpr17, $sgpr4_sgpr5_sgpr6_sgpr7_sgpr8_sgpr9_sgpr10_sgpr11, $sgpr0_sgpr1_sgpr2_sgpr3, 15, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load (s128), align 4, addrspace 4)
+    $vgpr0_vgpr1_vgpr2_vgpr3 = IMAGE_BVH_INTERSECT_RAY_sa_gfx10 killed $vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15_vgpr16_vgpr17_vgpr18_vgpr19, killed renamable $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec :: (dereferenceable load (s128) from custom "ImageResource")
+    S_ENDPGM 0
+...


        
