0f55fbae6c
Summary:
This frees 2 additional scalar registers.
These are results from all of my 3 patches combined:
Polaris:
Spilled SGPRs: 2231 -> 1517 (-32.00 %)
Tonga:
Spilled SGPRs: 3829 -> 2608 (-31.89 %)
Spilled VGPRs: 100 -> 84 (-16.00 %)
Tonga even spills SGPRs via VGPRs to scratch. That's a compute shader
limited to 64 VGPRs.
Reviewers: tstellarAMD
Subscribers: arsenm, kzhuravl, wdng, nhaehnle, yaxunl, tony-tye
Differential Revision: https://reviews.llvm.org/D27151
llvm-svn: 289262
74 lines
2.6 KiB
LLVM
74 lines
2.6 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefix=CI -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mcpu=fiji -verify-machineinstrs < %s | FileCheck -check-prefix=VI-NOXNACK -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mcpu=carrizo -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefix=VI-NOXNACK -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mcpu=stoney -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefix=VI-NOXNACK -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mcpu=carrizo -verify-machineinstrs < %s | FileCheck -check-prefix=VI-XNACK -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mcpu=stoney -verify-machineinstrs < %s | FileCheck -check-prefix=VI-XNACK -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefix=HSA-CI -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefix=HSA-VI-NOXNACK -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo -mattr=+xnack -verify-machineinstrs < %s | FileCheck -check-prefix=HSA-VI-XNACK -check-prefix=GCN %s
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; GCN-LABEL: {{^}}no_vcc_no_flat:
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; HSA-CI: is_xnack_enabled = 0
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; HSA-VI-NOXNACK: is_xnack_enabled = 0
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; HSA-VI-XNACK: is_xnack_enabled = 1
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; CI: ; NumSgprs: 8
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; VI-NOXNACK: ; NumSgprs: 8
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; VI-XNACK: ; NumSgprs: 12
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define void @no_vcc_no_flat() {
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entry:
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call void asm sideeffect "", "~{SGPR7}"()
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ret void
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}
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; GCN-LABEL: {{^}}vcc_no_flat:
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; HSA-CI: is_xnack_enabled = 0
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; HSA-VI-NOXNACK: is_xnack_enabled = 0
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; HSA-VI-XNACK: is_xnack_enabled = 1
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; CI: ; NumSgprs: 10
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; VI-NOXNACK: ; NumSgprs: 10
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; VI-XNACK: ; NumSgprs: 12
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define void @vcc_no_flat() {
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entry:
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call void asm sideeffect "", "~{SGPR7},~{VCC}"()
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ret void
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}
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; GCN-LABEL: {{^}}no_vcc_flat:
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; HSA-CI: is_xnack_enabled = 0
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; HSA-VI-NOXNACK: is_xnack_enabled = 0
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; HSA-VI-XNACK: is_xnack_enabled = 1
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; CI: ; NumSgprs: 8
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; VI-NOXNACK: ; NumSgprs: 8
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; VI-XNACK: ; NumSgprs: 12
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; HSA-CI: ; NumSgprs: 8
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; HSA-VI-NOXNACK: ; NumSgprs: 8
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; HSA-VI-XNACK: ; NumSgprs: 12
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define void @no_vcc_flat() {
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entry:
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call void asm sideeffect "", "~{SGPR7},~{FLAT_SCR}"()
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ret void
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}
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; GCN-LABEL: {{^}}vcc_flat:
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; HSA-NOXNACK: is_xnack_enabled = 0
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; HSA-XNACK: is_xnack_enabled = 1
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; CI: ; NumSgprs: 10
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; VI-NOXNACK: ; NumSgprs: 10
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; VI-XNACK: ; NumSgprs: 12
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; HSA-CI: ; NumSgprs: 10
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; HSA-VI-NOXNACK: ; NumSgprs: 10
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; HSA-VI-XNACK: ; NumSgprs: 12
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define void @vcc_flat() {
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entry:
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call void asm sideeffect "", "~{SGPR7},~{VCC},~{FLAT_SCR}"()
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ret void
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}
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