26f8f3db39
If we know we have stack objects, we reserve the registers that the private buffer resource and wave offset are passed and use them directly. If not, reserve the last 5 SGPRs just in case we need to spill. After register allocation, try to pick the next available registers instead of the last SGPRs, and then insert copies from the inputs to the reserved registers in the progloue. This also only selectively enables all of the input registers which are really required instead of always enabling them. llvm-svn: 254331
38 lines
2.0 KiB
LLVM
38 lines
2.0 KiB
LLVM
; RUN: llc -O0 -march=amdgcn -mtriple=amdgcn-unknown-amdhsa -verify-machineinstrs < %s | FileCheck %s
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; CHECK-LABEL: {{^}}test_debug_value:
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; CHECK: s_load_dwordx2 s[4:5]
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; CHECK: DEBUG_VALUE: test_debug_value:globalptr_arg <- %SGPR4_SGPR5
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; CHECK: buffer_store_dword
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; CHECK: s_endpgm
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define void @test_debug_value(i32 addrspace(1)* nocapture %globalptr_arg) #0 !dbg !4 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 addrspace(1)* %globalptr_arg, i64 0, metadata !10, metadata !13), !dbg !14
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store i32 123, i32 addrspace(1)* %globalptr_arg, align 4
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ret void
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!11, !12}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 244715) (llvm/trunk 244718)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)
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!1 = !DIFile(filename: "/tmp/test_debug_value.cl", directory: "/Users/matt/src/llvm/build_debug")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DISubprogram(name: "test_debug_value", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, variables: !9)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null, !7}
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!7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64, align: 32)
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!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !{!10}
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!10 = !DILocalVariable(name: "globalptr_arg", arg: 1, scope: !4, file: !1, line: 1, type: !7)
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!11 = !{i32 2, !"Dwarf Version", i32 4}
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!12 = !{i32 2, !"Debug Info Version", i32 3}
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!13 = !DIExpression()
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!14 = !DILocation(line: 1, column: 42, scope: !4)
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