AMDGPU: Add baseline test for gws handling with AGPR inputs #169372

arsenm · 2025-11-24T17:25:06Z

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arsenm · 2025-11-24T17:25:22Z

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llvmbot · 2025-11-24T17:25:59Z

@llvm/pr-subscribers-backend-amdgpu

Author: Matt Arsenault (arsenm)

Changes

Full diff: https://github.com/llvm/llvm-project/pull/169372.diff

1 Files Affected:

(added) llvm/test/CodeGen/AMDGPU/gws_agpr.ll (+395)

diff --git a/llvm/test/CodeGen/AMDGPU/gws_agpr.ll b/llvm/test/CodeGen/AMDGPU/gws_agpr.ll
new file mode 100644
index 0000000000000..2082a519d4f83
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/gws_agpr.ll
@@ -0,0 +1,395 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
+; RUN: llc -global-isel=0 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a < %s | FileCheck -check-prefixes=CHECK,SDAG %s
+; RUN: llc -global-isel=1 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a < %s | FileCheck -check-prefixes=CHECK,GISEL %s
+
+define void @gws_init_offset0() #0 {
+; SDAG-LABEL: gws_init_offset0:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_mov_b32 m0, 0
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_init a0 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_init_offset0:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a0
+; GISEL-NEXT:    s_mov_b32 m0, 0
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_init v0 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.init(i32 %val, i32 0)
+  ret void
+}
+
+define void @gws_init_offset63() #0 {
+; SDAG-LABEL: gws_init_offset63:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_mov_b32 m0, 0
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_init a0 offset:63 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_init_offset63:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a0
+; GISEL-NEXT:    s_mov_b32 m0, 0
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_init v0 offset:63 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.init(i32 %val, i32 63)
+  ret void
+}
+
+define void @gws_init_sgpr_offset(i32 inreg %offset) #0 {
+; SDAG-LABEL: gws_init_sgpr_offset:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_lshl_b32 m0, s16, 16
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_init a0 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_init_sgpr_offset:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a0
+; GISEL-NEXT:    s_lshl_b32 m0, s16, 16
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_init v0 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.init(i32 %val, i32 %offset)
+  ret void
+}
+
+define amdgpu_kernel void @gws_init_agpr_offset() #0 {
+; SDAG-LABEL: gws_init_agpr_offset:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a1
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    v_accvgpr_read_b32 v0, a1
+; SDAG-NEXT:    v_readfirstlane_b32 s0, v0
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_lshl_b32 m0, s0, 16
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_init a0 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_endpgm
+;
+; GISEL-LABEL: gws_init_agpr_offset:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a1
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a1
+; GISEL-NEXT:    v_readfirstlane_b32 s0, v0
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v2, a0
+; GISEL-NEXT:    s_lshl_b32 m0, s0, 16
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_init v2 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_endpgm
+  %val = call i32 asm "; def $0", "=a"()
+  %offset = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.init(i32 %val, i32 %offset)
+  ret void
+}
+
+define void @gws_init_agpr_offset_add1() #0 {
+; SDAG-LABEL: gws_init_agpr_offset_add1:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a1
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    v_accvgpr_read_b32 v0, a1
+; SDAG-NEXT:    v_readfirstlane_b32 s4, v0
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_lshl_b32 m0, s4, 16
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_init a0 offset:1 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_init_agpr_offset_add1:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a1
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a1
+; GISEL-NEXT:    v_readfirstlane_b32 s4, v0
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v2, a0
+; GISEL-NEXT:    s_lshl_b32 m0, s4, 16
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_init v2 offset:1 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  %offset.base = call i32 asm "; def $0", "=a"()
+  %offset = add i32 %offset.base, 1
+  call void @llvm.amdgcn.ds.gws.init(i32 %val, i32 %offset)
+  ret void
+}
+
+define amdgpu_kernel void @gws_init_vgpr_offset_add(i32 %val) #0 {
+; CHECK-LABEL: gws_init_vgpr_offset_add:
+; CHECK:       ; %bb.0:
+; CHECK-NEXT:    s_load_dword s0, s[8:9], 0x0
+; CHECK-NEXT:    ;;#ASMSTART
+; CHECK-NEXT:    ; def a0
+; CHECK-NEXT:    ;;#ASMEND
+; CHECK-NEXT:    v_accvgpr_read_b32 v0, a0
+; CHECK-NEXT:    v_readfirstlane_b32 s1, v0
+; CHECK-NEXT:    s_lshl_b32 m0, s1, 16
+; CHECK-NEXT:    s_waitcnt lgkmcnt(0)
+; CHECK-NEXT:    v_mov_b32_e32 v0, s0
+; CHECK-NEXT:    ds_gws_init v0 offset:3 gds
+; CHECK-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; CHECK-NEXT:    s_endpgm
+  %agpr.offset.base = call i32 asm "; def $0", "=a"()
+  %agpr.offset = add i32 %agpr.offset.base, 3
+  call void @llvm.amdgcn.ds.gws.init(i32 %val, i32 %agpr.offset)
+  ret void
+}
+
+define void @gws_barrier_offset0() #0 {
+; SDAG-LABEL: gws_barrier_offset0:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_mov_b32 m0, 0
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_barrier a0 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_barrier_offset0:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a0
+; GISEL-NEXT:    s_mov_b32 m0, 0
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_barrier v0 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.barrier(i32 %val, i32 0)
+  ret void
+}
+
+define void @gws_barrier_offset63() #0 {
+; SDAG-LABEL: gws_barrier_offset63:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_mov_b32 m0, 0
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_barrier a0 offset:63 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_barrier_offset63:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a0
+; GISEL-NEXT:    s_mov_b32 m0, 0
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_barrier v0 offset:63 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.barrier(i32 %val, i32 63)
+  ret void
+}
+
+define void @gws_barrier_sgpr_offset(i32 inreg %offset) #0 {
+; SDAG-LABEL: gws_barrier_sgpr_offset:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_lshl_b32 m0, s16, 16
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_barrier a0 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_barrier_sgpr_offset:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a0
+; GISEL-NEXT:    s_lshl_b32 m0, s16, 16
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_barrier v0 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.barrier(i32 %val, i32 %offset)
+  ret void
+}
+
+define void @gws_sema_v_offset0() #0 {
+; SDAG-LABEL: gws_sema_v_offset0:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_mov_b32 m0, 0
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_sema_v gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_sema_v_offset0:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_mov_b32 m0, 0
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_sema_v gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.sema.v(i32 0)
+  ret void
+}
+
+define void @gws_sema_br_offset0() #0 {
+; SDAG-LABEL: gws_sema_br_offset0:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    ;;#ASMSTART
+; SDAG-NEXT:    ; def a0
+; SDAG-NEXT:    ;;#ASMEND
+; SDAG-NEXT:    s_mov_b32 m0, 0
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_sema_br a0 gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_sema_br_offset0:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    v_accvgpr_read_b32 v0, a0
+; GISEL-NEXT:    s_mov_b32 m0, 0
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_sema_br v0 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.sema.br(i32 %val, i32 0)
+  ret void
+}
+
+define void @gws_sema_p_offset0() #0 {
+; SDAG-LABEL: gws_sema_p_offset0:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_mov_b32 m0, 0
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_sema_p gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_sema_p_offset0:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_mov_b32 m0, 0
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_sema_p gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.sema.p(i32 0)
+  ret void
+}
+
+define void @gws_sema_release_all_offset0() #0 {
+; SDAG-LABEL: gws_sema_release_all_offset0:
+; SDAG:       ; %bb.0:
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_mov_b32 m0, 0
+; SDAG-NEXT:    s_nop 0
+; SDAG-NEXT:    ds_gws_sema_release_all gds
+; SDAG-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; SDAG-NEXT:    s_setpc_b64 s[30:31]
+;
+; GISEL-LABEL: gws_sema_release_all_offset0:
+; GISEL:       ; %bb.0:
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_mov_b32 m0, 0
+; GISEL-NEXT:    s_nop 0
+; GISEL-NEXT:    ds_gws_sema_release_all gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    ;;#ASMSTART
+; GISEL-NEXT:    ; def a0
+; GISEL-NEXT:    ;;#ASMEND
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()
+  call void @llvm.amdgcn.ds.gws.sema.release.all(i32 0)
+  ret void
+}
+
+attributes #0 = { nounwind }

shiltian · 2025-11-25T17:03:14Z

llvm/test/CodeGen/AMDGPU/gws_agpr.ll

+; GISEL-NEXT:    ds_gws_init v0 gds
+; GISEL-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
+; GISEL-NEXT:    s_setpc_b64 s[30:31]
+  %val = call i32 asm "; def $0", "=a"()


Is this the canonical way to do an implicit define at IR level?

This is the only way to get a known AGPR

AMDGPU: Add baseline test for gws handling with AGPR inputs

9a17612

arsenm mentioned this pull request Nov 24, 2025

AMDGPU: Use RegClassByHwMode to manage GWS operand special case #169373

Merged

arsenm added the backend:AMDGPU label Nov 24, 2025 — with Graphite App

arsenm requested review from Sisyph, jayfoad, kosarev, rampitec and shiltian November 24, 2025 17:25

arsenm marked this pull request as ready for review November 24, 2025 17:25

arsenm mentioned this pull request Nov 24, 2025

[AMDGPU] Allow folding of non-subregs through REG_SEQUENCE #151033

Open

shiltian approved these changes Nov 25, 2025

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arsenm merged commit 5017370 into main Nov 25, 2025
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arsenm deleted the users/arsenm/amdgpu/add-baseline-tests-gws-intrinsics-agpr-inputs branch November 25, 2025 17:04

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AMDGPU: Add baseline test for gws handling with AGPR inputs #169372

AMDGPU: Add baseline test for gws handling with AGPR inputs #169372

arsenm commented Nov 24, 2025

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AMDGPU: Add baseline test for gws handling with AGPR inputs #169372

AMDGPU: Add baseline test for gws handling with AGPR inputs #169372

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arsenm commented Nov 24, 2025 •

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