AMDGPU/SI: Don't reserve FLAT_SCR on non-HSA targets & without stack objects
Summary: This frees 2 scalar registers.
Reviewers: tstellarAMD
Subscribers: qcolombet, arsenm, kzhuravl, wdng, nhaehnle, yaxunl, tony-tye
Differential Revision: https://reviews.llvm.org/D27150
llvm-svn: 289261
diff --git a/llvm/test/CodeGen/AMDGPU/flat-scratch-reg.ll b/llvm/test/CodeGen/AMDGPU/flat-scratch-reg.ll
index d8807e6..1ee9100 100644
--- a/llvm/test/CodeGen/AMDGPU/flat-scratch-reg.ll
+++ b/llvm/test/CodeGen/AMDGPU/flat-scratch-reg.ll
@@ -1,18 +1,20 @@
-; RUN: llc -march=amdgcn -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefix=NOXNACK -check-prefix=CI -check-prefix=GCN %s
-; RUN: llc -march=amdgcn -mcpu=fiji -verify-machineinstrs < %s | FileCheck -check-prefix=NOXNACK -check-prefix=VI -check-prefix=GCN %s
-; RUN: llc -march=amdgcn -mcpu=carrizo -verify-machineinstrs < %s | FileCheck -check-prefix=XNACK -check-prefix=VI -check-prefix=GCN %s
-; RUN: llc -march=amdgcn -mcpu=stoney -verify-machineinstrs < %s | FileCheck -check-prefix=XNACK -check-prefix=VI -check-prefix=GCN %s
+; RUN: llc -march=amdgcn -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefix=CI -check-prefix=GCN %s
+; RUN: llc -march=amdgcn -mcpu=fiji -verify-machineinstrs < %s | FileCheck -check-prefix=VI-NOXNACK -check-prefix=GCN %s
+; RUN: llc -march=amdgcn -mcpu=carrizo -verify-machineinstrs < %s | FileCheck -check-prefix=VI-XNACK -check-prefix=GCN %s
+; RUN: llc -march=amdgcn -mcpu=stoney -verify-machineinstrs < %s | FileCheck -check-prefix=VI-XNACK -check-prefix=GCN %s
-; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefix=CI -check-prefix=NOXNACK -check-prefix=HSA-NOXNACK -check-prefix=HSA -check-prefix=GCN %s
-; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefix=VI -check-prefix=NOXNACK -check-prefix=HSA-NOXNACK -check-prefix=HSA -check-prefix=GCN %s
-; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo -mattr=+xnack -verify-machineinstrs < %s | FileCheck -check-prefix=VI -check-prefix=XNACK -check-prefix=HSA-XNACK -check-prefix=HSA -check-prefix=GCN %s
+; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefix=HSA-CI -check-prefix=GCN %s
+; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo -mattr=-xnack -verify-machineinstrs < %s | FileCheck -check-prefix=HSA-VI-NOXNACK -check-prefix=GCN %s
+; RUN: llc -march=amdgcn -mtriple=amdgcn--amdhsa -mcpu=carrizo -mattr=+xnack -verify-machineinstrs < %s | FileCheck -check-prefix=HSA-VI-XNACK -check-prefix=GCN %s
; GCN-LABEL: {{^}}no_vcc_no_flat:
-; HSA-NOXNACK: is_xnack_enabled = 0
-; HSA-XNACK: is_xnack_enabled = 1
+; HSA-CI: is_xnack_enabled = 0
+; HSA-VI-NOXNACK: is_xnack_enabled = 0
+; HSA-VI-XNACK: is_xnack_enabled = 1
-; NOXNACK: ; NumSgprs: 8
-; XNACK: ; NumSgprs: 12
+; CI: ; NumSgprs: 8
+; VI-NOXNACK: ; NumSgprs: 8
+; VI-XNACK: ; NumSgprs: 12
define void @no_vcc_no_flat() {
entry:
call void asm sideeffect "", "~{SGPR7}"()
@@ -20,11 +22,13 @@
}
; GCN-LABEL: {{^}}vcc_no_flat:
-; HSA-NOXNACK: is_xnack_enabled = 0
-; HSA-XNACK: is_xnack_enabled = 1
+; HSA-CI: is_xnack_enabled = 0
+; HSA-VI-NOXNACK: is_xnack_enabled = 0
+; HSA-VI-XNACK: is_xnack_enabled = 1
-; NOXNACK: ; NumSgprs: 10
-; XNACK: ; NumSgprs: 12
+; CI: ; NumSgprs: 10
+; VI-NOXNACK: ; NumSgprs: 10
+; VI-XNACK: ; NumSgprs: 12
define void @vcc_no_flat() {
entry:
call void asm sideeffect "", "~{SGPR7},~{VCC}"()
@@ -32,11 +36,16 @@
}
; GCN-LABEL: {{^}}no_vcc_flat:
-; HSA-NOXNACK: is_xnack_enabled = 0
-; HSA-XNACK: is_xnack_enabled = 1
+; HSA-CI: is_xnack_enabled = 0
+; HSA-VI-NOXNACK: is_xnack_enabled = 0
+; HSA-VI-XNACK: is_xnack_enabled = 1
-; CI: ; NumSgprs: 12
-; VI: ; NumSgprs: 14
+; CI: ; NumSgprs: 8
+; VI-NOXNACK: ; NumSgprs: 8
+; VI-XNACK: ; NumSgprs: 12
+; HSA-CI: ; NumSgprs: 8
+; HSA-VI-NOXNACK: ; NumSgprs: 8
+; HSA-VI-XNACK: ; NumSgprs: 12
define void @no_vcc_flat() {
entry:
call void asm sideeffect "", "~{SGPR7},~{FLAT_SCR}"()
@@ -47,8 +56,12 @@
; HSA-NOXNACK: is_xnack_enabled = 0
; HSA-XNACK: is_xnack_enabled = 1
-; CI: ; NumSgprs: 12
-; VI: ; NumSgprs: 14
+; CI: ; NumSgprs: 10
+; VI-NOXNACK: ; NumSgprs: 10
+; VI-XNACK: ; NumSgprs: 12
+; HSA-CI: ; NumSgprs: 10
+; HSA-VI-NOXNACK: ; NumSgprs: 10
+; HSA-VI-XNACK: ; NumSgprs: 12
define void @vcc_flat() {
entry:
call void asm sideeffect "", "~{SGPR7},~{VCC},~{FLAT_SCR}"()