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150
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1 ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck --check-prefix=TONGA %s
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2
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3 ; On Tonga and Iceland, limited SGPR availability means care must be taken to
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4 ; allocate scratch registers correctly. Check that this test compiles without
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5 ; error.
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6 ; TONGA-LABEL: test
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252
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7 define amdgpu_kernel void @test(ptr addrspace(1) %out, ptr addrspace(1) %in) {
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150
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8 entry:
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9 %mbcnt.lo = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0)
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10 %tid = call i32 @llvm.amdgcn.mbcnt.hi(i32 -1, i32 %mbcnt.lo)
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252
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11 %aptr = getelementptr <256 x i32>, ptr addrspace(1) %in, i32 %tid
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12 %a = load <256 x i32>, ptr addrspace(1) %aptr
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150
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13 call void asm sideeffect "", "~{memory}" ()
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252
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14 %outptr = getelementptr <256 x i32>, ptr addrspace(1) %in, i32 %tid
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15 store <256 x i32> %a, ptr addrspace(1) %outptr
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150
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16
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17 ; mark 128-bit SGPR registers as used so they are unavailable for the
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18 ; scratch resource descriptor
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19 call void asm sideeffect "", "~{s4},~{s8},~{s12},~{s16},~{s20},~{s24},~{s28}" ()
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20 call void asm sideeffect "", "~{s32},~{s36},~{s40},~{s44},~{s48},~{s52},~{s56}" ()
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21 call void asm sideeffect "", "~{s60},~{s64},~{s68}" ()
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22 ret void
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23 }
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24
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25 declare i32 @llvm.amdgcn.mbcnt.lo(i32, i32) #0
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26 declare i32 @llvm.amdgcn.mbcnt.hi(i32, i32) #0
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27
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28 attributes #0 = { nounwind readnone }
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