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clang-p2996/llvm/test/CodeGen/AMDGPU/flat-scratch-reg.ll
Stanislav Mekhanoshin 082e22f3d7 [AMDGPU] Always reserve flat scratch SGPR for architected flat scratch 
With architected flat scratch it becomes readonly. We must always
reserve SGPR pair for it even if we do not use scratch at all since
an attempt to write to SGPRs mapped to FLAT_SCRATCH results in
memory violation.

This is not needed since GFX10 with architected flat scratch though
since special SGPRs are not carving space from normal SGPRs.

Differential Revision: https://reviews.llvm.org/D110376
2021-09-24 09:46:31 -07:00

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; RUN: llc -march=amdgcn -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefix=CI -check-prefix=GCN %s
; RUN: llc -march=amdgcn -mcpu=fiji -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefix=VI-NOXNACK -check-prefix=GCN %s
; RUN: llc -march=amdgcn -mcpu=carrizo -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=VI-NOXNACK,GCN %s
; RUN: llc -march=amdgcn -mcpu=stoney -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=VI-NOXNACK,GCN %s
; RUN: llc -march=amdgcn -mcpu=carrizo -mattr=+xnack -verify-machineinstrs < %s | FileCheck -check-prefix=VI-XNACK -check-prefix=GCN %s
; RUN: llc -march=amdgcn -mcpu=stoney -mattr=+xnack -verify-machineinstrs < %s | FileCheck -check-prefix=VI-XNACK -check-prefix=GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=kaveri --amdhsa-code-object-version=2 -verify-machineinstrs < %s | FileCheck -check-prefixes=CI,HSA-CI-V2,GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo --amdhsa-code-object-version=2 -mattr=+xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=VI-XNACK,HSA-VI-XNACK-V2,GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=VI-NOXNACK,HSA-VI-NOXNACK,GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo -mattr=+xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=VI-XNACK,HSA-VI-XNACK,GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=gfx900 -mattr=+architected-flat-scratch -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=gfx900 -mattr=+architected-flat-scratch,-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=HSA-VI-NOXNACK,GFX9-ARCH-FLAT,GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=gfx900 -mattr=+architected-flat-scratch,+xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=HSA-VI-XNACK,GFX9-ARCH-FLAT,GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=gfx1010 -mattr=+architected-flat-scratch -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=gfx1010 -mattr=+architected-flat-scratch,-xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=HSA-VI-NOXNACK,GFX10-ARCH-FLAT,GCN %s
; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=gfx1010 -mattr=+architected-flat-scratch,+xnack -verify-machineinstrs < %s | FileCheck -check-prefixes=HSA-VI-XNACK,GFX10-ARCH-FLAT,GCN %s
; GCN-LABEL: {{^}}no_vcc_no_flat:
; HSA-CI-V2: is_xnack_enabled = 0
; HSA-VI-XNACK-V2: is_xnack_enabled = 1
; NOT-HSA-CI: .amdhsa_reserve_xnack_mask
; HSA-VI-NOXNACK: .amdhsa_reserve_xnack_mask 0
; HSA-VI-XNACK: .amdhsa_reserve_xnack_mask 1
; CI: ; NumSgprs: 8
; VI-NOXNACK: ; NumSgprs: 8
; VI-XNACK: ; NumSgprs: 12
; GFX9-ARCH-FLAT: ; NumSgprs: 14
; GFX10-ARCH-FLAT: ; NumSgprs: 8
define amdgpu_kernel void @no_vcc_no_flat() {
entry:
call void asm sideeffect "", "~{s7}"()
ret void
}
; GCN-LABEL: {{^}}vcc_no_flat:
; HSA-CI-V2: is_xnack_enabled = 0
; HSA-VI-XNACK-V2: is_xnack_enabled = 1
; NOT-HSA-CI: .amdhsa_reserve_xnack_mask
; HSA-VI-NOXNACK: .amdhsa_reserve_xnack_mask 0
; HSA-VI-XNACK: .amdhsa_reserve_xnack_mask 1
; CI: ; NumSgprs: 10
; VI-NOXNACK: ; NumSgprs: 10
; VI-XNACK: ; NumSgprs: 12
; GFX9-ARCH-FLAT: ; NumSgprs: 14
; GFX10-ARCH-FLAT: ; NumSgprs: 10
define amdgpu_kernel void @vcc_no_flat() {
entry:
call void asm sideeffect "", "~{s7},~{vcc}"()
ret void
}
; GCN-LABEL: {{^}}no_vcc_flat:
; HSA-CI-V2: is_xnack_enabled = 0
; HSA-VI-XNACK-V2: is_xnack_enabled = 1
; NOT-HSA-CI: .amdhsa_reserve_xnack_mask
; HSA-VI-NOXNACK: .amdhsa_reserve_xnack_mask 0
; HSA-VI-XNACK: .amdhsa_reserve_xnack_mask 1
; CI: ; NumSgprs: 12
; VI-NOXNACK: ; NumSgprs: 14
; VI-XNACK: ; NumSgprs: 14
; GFX9-ARCH-FLAT: ; NumSgprs: 14
; GFX10-ARCH-FLAT: ; NumSgprs: 8
define amdgpu_kernel void @no_vcc_flat() {
entry:
call void asm sideeffect "", "~{s7},~{flat_scratch}"()
ret void
}
; GCN-LABEL: {{^}}vcc_flat:
; HSA-CI-V2: is_xnack_enabled = 0
; HSA-VI-XNACK-V2: is_xnack_enabled = 1
; NOT-HSA-CI: .amdhsa_reserve_xnack_mask
; HSA-VI-NOXNACK: .amdhsa_reserve_xnack_mask 0
; HSA-VI-XNACK: .amdhsa_reserve_xnack_mask 1
; CI: ; NumSgprs: 12
; VI-NOXNACK: ; NumSgprs: 14
; VI-XNACK: ; NumSgprs: 14
; GFX9-ARCH-FLAT: ; NumSgprs: 14
; GFX10-ARCH-FLAT: ; NumSgprs: 10
define amdgpu_kernel void @vcc_flat() {
entry:
call void asm sideeffect "", "~{s7},~{vcc},~{flat_scratch}"()
ret void
}
; Make sure used SGPR count for flat_scr is correct when there is no
; scratch usage and implicit flat uses.
; GCN-LABEL: {{^}}use_flat_scr:
; HSA-CI-V2: is_xnack_enabled = 0
; HSA-VI-XNACK-V2: is_xnack_enabled = 1
; NOT-HSA-CI: .amdhsa_reserve_xnack_mask
; HSA-VI-NOXNACK: .amdhsa_reserve_xnack_mask 0
; HSA-VI-XNACK: .amdhsa_reserve_xnack_mask 1
; CI: NumSgprs: 4
; VI-NOXNACK: NumSgprs: 6
; VI-XNACK: NumSgprs: 6
; GFX9-ARCH-FLAT: ; NumSgprs: 6
; GFX10-ARCH-FLAT: ; NumSgprs: 0
define amdgpu_kernel void @use_flat_scr() #0 {
entry:
call void asm sideeffect "; clobber ", "~{flat_scratch}"()
ret void
}
; GCN-LABEL: {{^}}use_flat_scr_lo:
; HSA-CI-V2: is_xnack_enabled = 0
; HSA-VI-XNACK-V2: is_xnack_enabled = 1
; NOT-HSA-CI: .amdhsa_reserve_xnack_mask
; HSA-VI-NOXNACK: .amdhsa_reserve_xnack_mask 0
; HSA-VI-XNACK: .amdhsa_reserve_xnack_mask 1
; CI: NumSgprs: 4
; VI-NOXNACK: NumSgprs: 6
; VI-XNACK: NumSgprs: 6
; GFX9-ARCH-FLAT: ; NumSgprs: 6
; GFX10-ARCH-FLAT: ; NumSgprs: 0
define amdgpu_kernel void @use_flat_scr_lo() #0 {
entry:
call void asm sideeffect "; clobber ", "~{flat_scratch_lo}"()
ret void
}
; GCN-LABEL: {{^}}use_flat_scr_hi:
; HSA-CI-V2: is_xnack_enabled = 0
; HSA-VI-XNACK-V2: is_xnack_enabled = 1
; NOT-HSA-CI: .amdhsa_reserve_xnack_mask
; HSA-VI-NOXNACK: .amdhsa_reserve_xnack_mask 0
; HSA-VI-XNACK: .amdhsa_reserve_xnack_mask 1
; CI: NumSgprs: 4
; VI-NOXNACK: NumSgprs: 6
; VI-XNACK: NumSgprs: 6
; GFX9-ARCH-FLAT: ; NumSgprs: 6
; GFX10-ARCH-FLAT: ; NumSgprs: 0
define amdgpu_kernel void @use_flat_scr_hi() #0 {
entry:
call void asm sideeffect "; clobber ", "~{flat_scratch_hi}"()
ret void
}
attributes #0 = { nounwind }
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