a5cbd2ab0b
…133242)"
This reverts commit 130080fab1 because it
causes issues in testcases similar to coalescer_remat.ll [1], i.e. when
we use a VGPR tuple but only write to its lower parts. The high VGPRs
would then not be included in the vgpr_count, and accessing them would
be an out of bounds violation.
[1]
https://github.com/llvm/llvm-project/blob/main/llvm/test/CodeGen/AMDGPU/coalescer_remat.ll
37 lines
1.5 KiB
LLVM
37 lines
1.5 KiB
LLVM
; RUN: llc -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 < %s | FileCheck -check-prefix=ALL %s
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; RUN: llc -O0 -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a < %s | FileCheck -check-prefixes=ALL,GFX90A %s
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; CallGraphAnalysis, which CodeGenSCC order depends on, does not look
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; through aliases. If GlobalOpt is never run, we do not see direct
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; calls,
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@alias = hidden alias void (), ptr @aliasee_default
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; ALL-LABEL: {{^}}kernel:
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; ALL: .amdhsa_next_free_vgpr max(totalnumvgprs(kernel.num_agpr, kernel.num_vgpr), 1, 0)
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; ALL-NEXT: .amdhsa_next_free_sgpr max(kernel.numbered_sgpr+extrasgprs(kernel.uses_vcc, kernel.uses_flat_scratch, 1), 1, 0)-extrasgprs(kernel.uses_vcc, kernel.uses_flat_scratch, 1)
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; GFX90A-NEXT: .amdhsa_accum_offset (((((alignto(max(1, kernel.num_vgpr), 4)/4)-1)&~65536)&63)+1)*4
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; ALL: .set kernel.num_vgpr, max(41, .Laliasee_default.num_vgpr)
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; ALL-NEXT: .set kernel.num_agpr, max(0, .Laliasee_default.num_agpr)
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; ALL-NEXT: .set kernel.numbered_sgpr, max(33, .Laliasee_default.numbered_sgpr)
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define amdgpu_kernel void @kernel() #0 {
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bb:
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call void @alias() #2
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ret void
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}
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define internal void @aliasee_default() #1 {
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bb:
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call void asm sideeffect "; clobber a26 ", "~{a26}"()
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ret void
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}
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; ALL: .set .Laliasee_default.num_vgpr, 0
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; ALL-NEXT: .set .Laliasee_default.num_agpr, 27
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; ALL-NEXT: .set .Laliasee_default.numbered_sgpr, 32
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attributes #0 = { noinline norecurse nounwind optnone }
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attributes #1 = { noinline norecurse nounwind readnone willreturn }
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attributes #2 = { nounwind readnone willreturn }
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