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cb2ad1e249
Due to the SGPR init bug, every program claims to use the same number of SGPRs anyway, so there's no point in trying to shift those registers down from their initial spot of reservation. Add a test that uses VGPR spilling and blocks most SGPRs from being used for the scratch resource register. Previously, this would run into an assertion. Differential Revision: http://reviews.llvm.org/D15724 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256870 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.8 KiB
LLVM
48 lines
1.8 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=bonaire < %s | FileCheck -check-prefix=GCN -check-prefix=CI -check-prefix=ALL %s
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; RUN: llc -march=amdgcn -mcpu=carrizo < %s | FileCheck -check-prefix=GCN -check-prefix=VI -check-prefix=ALL %s
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; ALL-LABEL: {{^}}large_alloca_pixel_shader:
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; GCN: s_mov_b32 s8, SCRATCH_RSRC_DWORD0
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; GCN: s_mov_b32 s9, SCRATCH_RSRC_DWORD1
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; GCN: s_mov_b32 s10, -1
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; CI: s_mov_b32 s11, 0x80f000
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; VI: s_mov_b32 s11, 0x800000
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; GCN: buffer_store_dword {{v[0-9]+}}, {{v[0-9]+}}, s[8:11], s1 offen
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; GCN: buffer_load_dword {{v[0-9]+}}, {{v[0-9]+}}, s[8:11], s1 offen
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; ALL: ; ScratchSize: 32772
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define void @large_alloca_pixel_shader(i32 %x, i32 %y) #1 {
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%large = alloca [8192 x i32], align 4
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%gep = getelementptr [8192 x i32], [8192 x i32]* %large, i32 0, i32 8191
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store volatile i32 %x, i32* %gep
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%gep1 = getelementptr [8192 x i32], [8192 x i32]* %large, i32 0, i32 %y
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%val = load volatile i32, i32* %gep1
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store volatile i32 %val, i32 addrspace(1)* undef
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ret void
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}
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; ALL-LABEL: {{^}}large_alloca_pixel_shader_inreg:
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; GCN: s_mov_b32 s8, SCRATCH_RSRC_DWORD0
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; GCN: s_mov_b32 s9, SCRATCH_RSRC_DWORD1
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; GCN: s_mov_b32 s10, -1
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; CI: s_mov_b32 s11, 0x80f000
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; VI: s_mov_b32 s11, 0x800000
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; GCN: buffer_store_dword {{v[0-9]+}}, {{v[0-9]+}}, s[8:11], s1 offen
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; GCN: buffer_load_dword {{v[0-9]+}}, {{v[0-9]+}}, s[8:11], s1 offen
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; ALL: ; ScratchSize: 32772
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define void @large_alloca_pixel_shader_inreg(i32 inreg %x, i32 inreg %y) #1 {
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%large = alloca [8192 x i32], align 4
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%gep = getelementptr [8192 x i32], [8192 x i32]* %large, i32 0, i32 8191
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store volatile i32 %x, i32* %gep
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%gep1 = getelementptr [8192 x i32], [8192 x i32]* %large, i32 0, i32 %y
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%val = load volatile i32, i32* %gep1
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store volatile i32 %val, i32 addrspace(1)* undef
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ret void
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}
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attributes #0 = { nounwind }
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attributes #1 = { nounwind "ShaderType"="0" }
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