268 lines
8.5 KiB
LLVM
268 lines
8.5 KiB
LLVM
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=fiji -enable-ipra=0 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=hawaii -enable-ipra=0 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -enable-ipra=0 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
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declare void @external_void_func_void() #0
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; GCN-LABEL: {{^}}test_kernel_call_external_void_func_void_clobber_s30_s31_call_external_void_func_void:
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; GCN: s_mov_b32 s33, s7
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; GCN: s_getpc_b64 s[34:35]
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; GCN-NEXT: s_add_u32 s34, s34,
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; GCN-NEXT: s_addc_u32 s35, s35,
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; GCN-NEXT: s_mov_b32 s4, s33
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; GCN-NEXT: s_mov_b32 s32, s33
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; GCN: s_swappc_b64 s[30:31], s[34:35]
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; GCN-NEXT: s_mov_b32 s4, s33
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; GCN-NEXT: #ASMSTART
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; GCN-NEXT: #ASMEND
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; GCN-NEXT: s_swappc_b64 s[30:31], s[34:35]
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define amdgpu_kernel void @test_kernel_call_external_void_func_void_clobber_s30_s31_call_external_void_func_void() #0 {
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call void @external_void_func_void()
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call void asm sideeffect "", ""() #0
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call void @external_void_func_void()
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ret void
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}
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; GCN-LABEL: {{^}}test_func_call_external_void_func_void_clobber_s30_s31_call_external_void_func_void:
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; GCN: v_writelane_b32 v32, s33, 0
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; GCN: v_writelane_b32 v32, s34, 1
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; GCN: v_writelane_b32 v32, s35, 2
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; GCN: v_writelane_b32 v32, s36, 3
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; GCN: v_writelane_b32 v32, s37, 4
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; GCN: s_mov_b32 s33, s5
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; GCN-NEXT: s_swappc_b64
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; GCN-NEXT: s_mov_b32 s5, s33
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; GCN-NEXT: ;;#ASMSTART
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; GCN-NEXT: ;;#ASMEND
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; GCN-NEXT: s_mov_b32 s33, s5
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; GCN-NEXT: s_swappc_b64
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; GCN-NEXT: s_mov_b32 s5, s33
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; GCN: v_readlane_b32 s37, v32, 4
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; GCN: v_readlane_b32 s36, v32, 3
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; GCN: v_readlane_b32 s35, v32, 2
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; GCN: v_readlane_b32 s34, v32, 1
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; GCN: v_readlane_b32 s33, v32, 0
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; GCN: s_setpc_b64
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define void @test_func_call_external_void_func_void_clobber_s30_s31_call_external_void_func_void() #0 {
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call void @external_void_func_void()
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call void asm sideeffect "", ""() #0
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call void @external_void_func_void()
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ret void
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}
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; FIXME: Avoid extra restore of FP in between calls.
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; GCN-LABEL: {{^}}test_func_call_external_void_funcx2:
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; GCN: s_mov_b32 s33, s5
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; GCN-NEXT: s_swappc_b64
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; GCN-NEXT: s_mov_b32 s5, s33
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; GCN-NEXT: s_mov_b32 s33, s5
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; GCN-NEXT: s_swappc_b64
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; GCN-NEXT: s_mov_b32 s5, s33
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define void @test_func_call_external_void_funcx2() #0 {
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call void @external_void_func_void()
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call void @external_void_func_void()
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ret void
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}
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; GCN-LABEL: {{^}}void_func_void_clobber_s30_s31:
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; GCN: s_waitcnt
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; GCN-NEXT: s_mov_b64 [[SAVEPC:s\[[0-9]+:[0-9]+\]]], s[30:31]
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; GCN-NEXT: #ASMSTART
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; GCN: ; clobber
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; GCN-NEXT: #ASMEND
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; GCN-NEXT: s_mov_b64 s[30:31], [[SAVEPC]]
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; GCN-NEXT: s_setpc_b64 s[30:31]
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define void @void_func_void_clobber_s30_s31() #2 {
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call void asm sideeffect "; clobber", "~{s[30:31]}"() #0
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ret void
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}
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; GCN-LABEL: {{^}}void_func_void_clobber_vcc:
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; GCN: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: ;;#ASMSTART
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; GCN-NEXT: ;;#ASMEND
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; GCN-NEXT: s_setpc_b64 s[30:31]
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define void @void_func_void_clobber_vcc() #2 {
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call void asm sideeffect "", "~{VCC}"() #0
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ret void
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}
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; GCN-LABEL: {{^}}test_call_void_func_void_clobber_vcc:
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; GCN: s_getpc_b64
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; GCN-NEXT: s_add_u32
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; GCN-NEXT: s_addc_u32
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; GCN: s_mov_b64 s[34:35], vcc
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; GCN-NEXT: s_swappc_b64
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; GCN: s_mov_b64 vcc, s[34:35]
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define amdgpu_kernel void @test_call_void_func_void_clobber_vcc(i32 addrspace(1)* %out) #0 {
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%vcc = call i64 asm sideeffect "; def $0", "={vcc}"()
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call void @void_func_void_clobber_vcc()
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%val0 = load volatile i32, i32 addrspace(1)* undef
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%val1 = load volatile i32, i32 addrspace(1)* undef
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call void asm sideeffect "; use $0", "{vcc}"(i64 %vcc)
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ret void
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}
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; GCN-LABEL: {{^}}test_call_void_func_void_mayclobber_s31:
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; GCN: s_mov_b32 s33, s31
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; GCN-NEXT: s_swappc_b64
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; GCN-NEXT: s_mov_b32 s31, s33
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define amdgpu_kernel void @test_call_void_func_void_mayclobber_s31(i32 addrspace(1)* %out) #0 {
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%s31 = call i32 asm sideeffect "; def $0", "={s31}"()
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call void @external_void_func_void()
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call void asm sideeffect "; use $0", "{s31}"(i32 %s31)
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ret void
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}
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; GCN-LABEL: {{^}}test_call_void_func_void_mayclobber_v31:
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; GCN: v_mov_b32_e32 v32, v31
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; GCN-NEXT: s_swappc_b64
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; GCN-NEXT: v_mov_b32_e32 v31, v32
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define amdgpu_kernel void @test_call_void_func_void_mayclobber_v31(i32 addrspace(1)* %out) #0 {
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%v31 = call i32 asm sideeffect "; def $0", "={v31}"()
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call void @external_void_func_void()
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call void asm sideeffect "; use $0", "{v31}"(i32 %v31)
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ret void
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}
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; GCN-LABEL: {{^}}test_call_void_func_void_preserves_s33:
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; GCN: s_mov_b32 s34, s9
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; GCN: ; def s33
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; GCN-NEXT: #ASMEND
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; GCN: s_getpc_b64 s[6:7]
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; GCN-NEXT: s_add_u32 s6, s6, external_void_func_void@rel32@lo+4
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; GCN-NEXT: s_addc_u32 s7, s7, external_void_func_void@rel32@hi+4
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; GCN-NEXT: s_mov_b32 s4, s34
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; GCN-NEXT: s_mov_b32 s32, s34
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; GCN-NEXT: s_swappc_b64 s[30:31], s[6:7]
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; GCN-NEXT: ;;#ASMSTART
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; GCN-NEXT: ; use s33
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; GCN-NEXT: ;;#ASMEND
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; GCN-NEXT: s_endpgm
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define amdgpu_kernel void @test_call_void_func_void_preserves_s33(i32 addrspace(1)* %out) #0 {
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%s33 = call i32 asm sideeffect "; def $0", "={s33}"()
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call void @external_void_func_void()
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call void asm sideeffect "; use $0", "{s33}"(i32 %s33)
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ret void
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}
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; GCN-LABEL: {{^}}test_call_void_func_void_preserves_v32:
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; GCN: s_mov_b32 s33, s9
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; GCN: ; def v32
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; GCN-NEXT: #ASMEND
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; GCN: s_getpc_b64 s[6:7]
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; GCN-NEXT: s_add_u32 s6, s6, external_void_func_void@rel32@lo+4
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; GCN-NEXT: s_addc_u32 s7, s7, external_void_func_void@rel32@hi+4
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; GCN-NEXT: s_mov_b32 s4, s33
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; GCN-NEXT: s_mov_b32 s32, s33
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; GCN-NEXT: s_swappc_b64 s[30:31], s[6:7]
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; GCN-NEXT: ;;#ASMSTART
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; GCN-NEXT: ; use v32
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; GCN-NEXT: ;;#ASMEND
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; GCN-NEXT: s_endpgm
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define amdgpu_kernel void @test_call_void_func_void_preserves_v32(i32 addrspace(1)* %out) #0 {
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%v32 = call i32 asm sideeffect "; def $0", "={v32}"()
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call void @external_void_func_void()
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call void asm sideeffect "; use $0", "{v32}"(i32 %v32)
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ret void
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}
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; GCN-LABEL: {{^}}void_func_void_clobber_s33:
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; GCN: v_writelane_b32 v0, s33, 0
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; GCN-NEXT: #ASMSTART
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; GCN-NEXT: ; clobber
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; GCN-NEXT: #ASMEND
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; GCN-NEXT: v_readlane_b32 s33, v0, 0
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; GCN-NEXT: s_setpc_b64
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define void @void_func_void_clobber_s33() #2 {
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call void asm sideeffect "; clobber", "~{s33}"() #0
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ret void
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}
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; GCN-LABEL: {{^}}test_call_void_func_void_clobber_s33:
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; GCN: s_mov_b32 s33, s7
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; GCN: s_getpc_b64
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; GCN-NEXT: s_add_u32
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; GCN-NEXT: s_addc_u32
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; GCN-NEXT: s_mov_b32 s4, s33
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; GCN-NEXT: s_mov_b32 s32, s33
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; GCN: s_swappc_b64
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; GCN-NEXT: s_endpgm
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define amdgpu_kernel void @test_call_void_func_void_clobber_s33() #0 {
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call void @void_func_void_clobber_s33()
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ret void
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}
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; GCN-LABEL: {{^}}callee_saved_sgpr_func:
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; GCN-NOT: s40
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; GCN: v_writelane_b32 v32, s40
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; GCN: s_swappc_b64
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; GCN-NOT: s40
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; GCN: ; use s40
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; GCN-NOT: s40
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; GCN: v_readlane_b32 s40, v32
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; GCN-NOT: s40
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define void @callee_saved_sgpr_func() #2 {
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%s40 = call i32 asm sideeffect "; def s40", "={s40}"() #0
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call void @external_void_func_void()
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call void asm sideeffect "; use $0", "s"(i32 %s40) #0
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ret void
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}
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; GCN-LABEL: {{^}}callee_saved_sgpr_kernel:
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; GCN-NOT: s40
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; GCN: ; def s40
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; GCN-NOT: s40
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; GCN: s_swappc_b64
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; GCN-NOT: s40
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; GCN: ; use s40
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; GCN-NOT: s40
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define amdgpu_kernel void @callee_saved_sgpr_kernel() #2 {
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%s40 = call i32 asm sideeffect "; def s40", "={s40}"() #0
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call void @external_void_func_void()
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call void asm sideeffect "; use $0", "s"(i32 %s40) #0
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ret void
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}
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; First call preserved VGPR is used so it can't be used for SGPR spills.
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; GCN-LABEL: {{^}}callee_saved_sgpr_vgpr_func:
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; GCN-NOT: s40
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; GCN: v_writelane_b32 v33, s40
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; GCN: s_swappc_b64
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; GCN-NOT: s40
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; GCN: ; use s40
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; GCN-NOT: s40
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; GCN: v_readlane_b32 s40, v33
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; GCN-NOT: s40
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define void @callee_saved_sgpr_vgpr_func() #2 {
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%s40 = call i32 asm sideeffect "; def s40", "={s40}"() #0
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%v32 = call i32 asm sideeffect "; def v32", "={v32}"() #0
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call void @external_void_func_void()
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call void asm sideeffect "; use $0", "s"(i32 %s40) #0
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call void asm sideeffect "; use $0", "v"(i32 %v32) #0
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ret void
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}
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; GCN-LABEL: {{^}}callee_saved_sgpr_vgpr_kernel:
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; GCN-NOT: s40
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; GCN: ; def s40
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; GCN-NOT: s40
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; GCN: s_swappc_b64
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; GCN-NOT: s40
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; GCN: ; use s40
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; GCN-NOT: s40
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define amdgpu_kernel void @callee_saved_sgpr_vgpr_kernel() #2 {
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%s40 = call i32 asm sideeffect "; def s40", "={s40}"() #0
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%v32 = call i32 asm sideeffect "; def v32", "={v32}"() #0
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call void @external_void_func_void()
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call void asm sideeffect "; use $0", "s"(i32 %s40) #0
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call void asm sideeffect "; use $0", "v"(i32 %v32) #0
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ret void
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}
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind noinline }
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