d391e4fe84
Be more consistent in the naming convention for the various RET instructions to specify in terms of bitwidth. Helps prevent future scheduler model mismatches like those that were only addressed in D44687. Differential Revision: https://reviews.llvm.org/D113302
223 lines
12 KiB
YAML
223 lines
12 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu -start-before=regallocfast -stop-after=livedebugvalues -verify-machineinstrs -o - %s | FileCheck %s
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# DBG_VALUEs for %0 should be present in the use blocks
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--- |
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define dso_local i32 @foo(i32 %a) #0 !dbg !6 {
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entry:
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%a.addr = alloca i32, align 4
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%saved_stack = alloca i8*, align 8
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%__vla_expr0 = alloca i64, align 8
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%i = alloca i32, align 4
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store i32 %a, i32* %a.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !11, metadata !DIExpression()), !dbg !12
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%0 = load i32, i32* %a.addr, align 4, !dbg !13
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%1 = zext i32 %0 to i64, !dbg !14
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%2 = call i8* @llvm.stacksave(), !dbg !14
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store i8* %2, i8** %saved_stack, align 8, !dbg !14
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%vla = alloca i32, i64 %1, align 16, !dbg !14
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store i64 %1, i64* %__vla_expr0, align 8, !dbg !14
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call void @llvm.dbg.declare(metadata i64* %__vla_expr0, metadata !15, metadata !DIExpression()), !dbg !17
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call void @llvm.dbg.declare(metadata i32* %vla, metadata !18, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.declare(metadata i32* %i, metadata !23, metadata !DIExpression()), !dbg !25
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store i32 0, i32* %i, align 4, !dbg !25
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br label %for.cond, !dbg !26
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for.cond: ; preds = %for.inc, %entry
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%3 = load i32, i32* %i, align 4, !dbg !27
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%4 = load i32, i32* %a.addr, align 4, !dbg !29
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%cmp = icmp slt i32 %3, %4, !dbg !30
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br i1 %cmp, label %for.body, label %for.end, !dbg !31
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for.body: ; preds = %for.cond
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%5 = load i32, i32* %a.addr, align 4, !dbg !32
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%6 = load i32, i32* %i, align 4, !dbg !33
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%sub = sub nsw i32 %5, %6, !dbg !34
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%7 = load i32, i32* %i, align 4, !dbg !35
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%idxprom = sext i32 %7 to i64, !dbg !36
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%arrayidx = getelementptr inbounds i32, i32* %vla, i64 %idxprom, !dbg !36
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store i32 %sub, i32* %arrayidx, align 4, !dbg !37
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br label %for.inc, !dbg !36
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for.inc: ; preds = %for.body
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%8 = load i32, i32* %i, align 4, !dbg !38
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%inc = add nsw i32 %8, 1, !dbg !38
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store i32 %inc, i32* %i, align 4, !dbg !38
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br label %for.cond, !dbg !39, !llvm.loop !40
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for.end: ; preds = %for.cond
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%9 = load i32, i32* %a.addr, align 4, !dbg !42
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%sub1 = sub nsw i32 %9, 1, !dbg !43
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%idxprom2 = sext i32 %sub1 to i64, !dbg !44
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%arrayidx3 = getelementptr inbounds i32, i32* %vla, i64 %idxprom2, !dbg !44
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%10 = load i32, i32* %arrayidx3, align 4, !dbg !44
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%11 = load i8*, i8** %saved_stack, align 8, !dbg !45
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call void @llvm.stackrestore(i8* %11), !dbg !45
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ret i32 %10, !dbg !45
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare i8* @llvm.stacksave() #2
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declare void @llvm.stackrestore(i8*) #2
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attributes #0 = { noinline nounwind optnone uwtable }
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attributes #1 = { nounwind readnone speculatable willreturn }
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attributes #2 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0 (git@github.com:llvm/llvm-project.git 954995d0a45729c7935b82258c166524ee87ad3f)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "/home/matt/src/llvm-project/lldb/test/API/lang/c/vla/main.c", directory: "/home/matt/src/llvm-project/build_debug_lldbg")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = distinct !DISubprogram(name: "foo", scope: !7, file: !7, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!7 = !DIFile(filename: "lldb/test/API/lang/c/vla/main.c", directory: "/home/matt/src/llvm-project")
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !DILocalVariable(name: "a", arg: 1, scope: !6, file: !7, line: 3, type: !10)
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!12 = !DILocation(line: 3, column: 13, scope: !6)
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!13 = !DILocation(line: 4, column: 11, scope: !6)
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!14 = !DILocation(line: 4, column: 3, scope: !6)
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!15 = !DILocalVariable(name: "__vla_expr0", scope: !6, type: !16, flags: DIFlagArtificial)
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!16 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned)
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!17 = !DILocation(line: 0, scope: !6)
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!18 = !DILocalVariable(name: "vla", scope: !6, file: !7, line: 4, type: !19)
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!19 = !DICompositeType(tag: DW_TAG_array_type, baseType: !10, elements: !20)
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!20 = !{!21}
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!21 = !DISubrange(count: !15)
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!22 = !DILocation(line: 4, column: 7, scope: !6)
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!23 = !DILocalVariable(name: "i", scope: !24, file: !7, line: 6, type: !10)
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!24 = distinct !DILexicalBlock(scope: !6, file: !7, line: 6, column: 3)
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!25 = !DILocation(line: 6, column: 12, scope: !24)
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!26 = !DILocation(line: 6, column: 8, scope: !24)
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!27 = !DILocation(line: 6, column: 19, scope: !28)
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!28 = distinct !DILexicalBlock(scope: !24, file: !7, line: 6, column: 3)
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!29 = !DILocation(line: 6, column: 23, scope: !28)
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!30 = !DILocation(line: 6, column: 21, scope: !28)
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!31 = !DILocation(line: 6, column: 3, scope: !24)
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!32 = !DILocation(line: 7, column: 14, scope: !28)
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!33 = !DILocation(line: 7, column: 16, scope: !28)
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!34 = !DILocation(line: 7, column: 15, scope: !28)
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!35 = !DILocation(line: 7, column: 9, scope: !28)
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!36 = !DILocation(line: 7, column: 5, scope: !28)
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!37 = !DILocation(line: 7, column: 12, scope: !28)
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!38 = !DILocation(line: 6, column: 26, scope: !28)
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!39 = !DILocation(line: 6, column: 3, scope: !28)
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!40 = distinct !{!40, !31, !41}
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!41 = !DILocation(line: 7, column: 16, scope: !24)
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!42 = !DILocation(line: 10, column: 14, scope: !6)
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!43 = !DILocation(line: 10, column: 15, scope: !6)
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!44 = !DILocation(line: 10, column: 10, scope: !6)
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!45 = !DILocation(line: 11, column: 1, scope: !6)
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...
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---
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name: foo
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tracksRegLiveness: true
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frameInfo:
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hasCalls: true
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stack:
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- { id: 0, name: a.addr, size: 4, alignment: 4, debug-info-variable: '!11',
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debug-info-expression: '!DIExpression()', debug-info-location: '!12' }
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- { id: 1, name: __vla_expr0, size: 8, alignment: 8, debug-info-variable: '!15',
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debug-info-expression: '!DIExpression()', debug-info-location: '!17' }
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- { id: 2, name: i, size: 4, alignment: 4, debug-info-variable: '!23',
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debug-info-expression: '!DIExpression()', debug-info-location: '!25' }
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- { id: 3, name: vla, type: variable-sized, alignment: 1 }
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body: |
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; CHECK-LABEL: name: foo
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; CHECK: bb.0.entry:
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; CHECK: successors: %bb.1(0x80000000)
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; CHECK: liveins: $edi, $rbx
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; CHECK: frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
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; CHECK: CFI_INSTRUCTION def_cfa_offset 16
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; CHECK: CFI_INSTRUCTION offset $rbp, -16
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; CHECK: $rbp = frame-setup MOV64rr $rsp
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; CHECK: CFI_INSTRUCTION def_cfa_register $rbp
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; CHECK: frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp, debug-location !13
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; CHECK: $rsp = frame-setup SUB64ri8 $rsp, 40, implicit-def dead $eflags
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; CHECK: CFI_INSTRUCTION offset $rbx, -24
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; CHECK: renamable $eax = MOV32rm $rbp, 1, $noreg, -12, $noreg, debug-location !13 :: (dereferenceable load (s32) from %ir.a.addr)
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; CHECK: renamable $rax = KILL killed renamable $eax, debug-location !13
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; CHECK: $rcx = MOV64rr $rsp, debug-location !14
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; CHECK: MOV64mr $rbp, 1, $noreg, -40, $noreg, $rcx :: (store (s64) into %stack.4)
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; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22
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; CHECK: $rsp = MOV64rr $rcx, debug-location !14
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; CHECK: MOV64mr $rbp, 1, $noreg, -24, $noreg, killed renamable $rax, debug-location !14 :: (store (s64) into %ir.__vla_expr0)
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; CHECK: DBG_VALUE renamable $rcx, 0, !18, !DIExpression(), debug-location !22
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; CHECK: MOV32mi $rbp, 1, $noreg, -28, $noreg, 0, debug-location !25 :: (store (s32) into %ir.i)
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; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22
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; CHECK: bb.1.for.cond:
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; CHECK: successors: %bb.4(0x40000000), %bb.2(0x40000000)
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; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22
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; CHECK: renamable $eax = MOV32rm $rbp, 1, $noreg, -28, $noreg, debug-location !27 :: (load (s32) from %ir.i)
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; CHECK: CMP32rm killed renamable $eax, $rbp, 1, $noreg, -12, $noreg, implicit-def $eflags, debug-location !30 :: (load (s32) from %ir.a.addr)
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; CHECK: JCC_1 %bb.4, 13, implicit killed $eflags, debug-location !31
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; CHECK: bb.2.for.body:
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; CHECK: successors: %bb.3(0x80000000)
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; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22
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; CHECK: $rax = MOV64rm $rbp, 1, $noreg, -40, $noreg :: (load (s64) from %stack.4)
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; CHECK: renamable $edx = MOV32rm $rbp, 1, $noreg, -12, $noreg, debug-location !32 :: (load (s32) from %ir.a.addr)
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; CHECK: renamable $rcx = MOVSX64rm32 $rbp, 1, $noreg, -28, $noreg, debug-location !36 :: (load (s32) from %ir.i)
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; CHECK: MOV32mr renamable $rax, 4, killed renamable $rcx, 0, $noreg, killed renamable $edx, debug-location !37 :: (store (s32) into %ir.arrayidx)
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; CHECK: bb.3.for.inc:
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; CHECK: successors: %bb.1(0x80000000)
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; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22
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; CHECK: JMP_1 %bb.1, debug-location !39
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; CHECK: bb.4.for.end:
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; CHECK: DBG_VALUE $rbp, 0, !18, !DIExpression(DW_OP_constu, 40, DW_OP_minus, DW_OP_deref), debug-location !22
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; CHECK: $rax = IMPLICIT_DEF
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; CHECK: $rax = MOV64rm $rbp, 1, $noreg, -40, $noreg :: (load (s64) from %stack.4)
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; CHECK: dead $rbx = IMPLICIT_DEF
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; CHECK: dead $rcx = IMPLICIT_DEF
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; CHECK: dead $rdx = IMPLICIT_DEF
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; CHECK: renamable $rcx = IMPLICIT_DEF
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; CHECK: renamable $eax = MOV32rm killed renamable $rax, 4, killed renamable $rcx, 0, $noreg, debug-location !44 :: (load (s32) from %ir.arrayidx3)
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; CHECK: $rsp = LEA64r $rbp, 1, $noreg, -8, $noreg, debug-location !45
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; CHECK: $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !45
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; CHECK: $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !45
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; CHECK: CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !45
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; CHECK: RET64 implicit killed $eax, debug-location !45
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bb.0.entry:
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liveins: $edi
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%0:gr32 = COPY $edi
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%1:gr32 = MOV32rm %stack.0.a.addr, 1, $noreg, 0, $noreg, debug-location !13 :: (dereferenceable load (s32) from %ir.a.addr)
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%2:gr64_nosp = SUBREG_TO_REG 0, killed %1, %subreg.sub_32bit, debug-location !13
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ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !14
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%3:gr64 = COPY $rsp, debug-location !14
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$rsp = COPY %3, debug-location !14
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ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !14
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MOV64mr %stack.1.__vla_expr0, 1, $noreg, 0, $noreg, %2, debug-location !14 :: (store (s64) into %ir.__vla_expr0)
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DBG_VALUE %3, 0, !18, !DIExpression(), debug-location !22
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MOV32mi %stack.2.i, 1, $noreg, 0, $noreg, 0, debug-location !25 :: (store (s32) into %ir.i)
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bb.1.for.cond:
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%4:gr32 = MOV32rm %stack.2.i, 1, $noreg, 0, $noreg, debug-location !27 :: (load (s32) from %ir.i)
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CMP32rm %4, %stack.0.a.addr, 1, $noreg, 0, $noreg, implicit-def $eflags, debug-location !30 :: (load (s32) from %ir.a.addr)
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JCC_1 %bb.4, 13, implicit $eflags, debug-location !31
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bb.2.for.body:
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%5:gr32 = MOV32rm %stack.0.a.addr, 1, $noreg, 0, $noreg, debug-location !32 :: (load (s32) from %ir.a.addr)
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%6:gr64_nosp = MOVSX64rm32 %stack.2.i, 1, $noreg, 0, $noreg, debug-location !36 :: (load (s32) from %ir.i)
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MOV32mr %3, 4, %6, 0, $noreg, killed %5, debug-location !37 :: (store (s32) into %ir.arrayidx)
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bb.3.for.inc:
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JMP_1 %bb.1, debug-location !39
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bb.4.for.end:
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$rax = IMPLICIT_DEF
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$rbx = IMPLICIT_DEF
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$rcx = IMPLICIT_DEF
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$rdx = IMPLICIT_DEF
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%7:gr64_nosp = IMPLICIT_DEF
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%8:gr32 = MOV32rm %3, 4, %7, 0, $noreg, debug-location !44 :: (load (s32) from %ir.arrayidx3)
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$eax = COPY %8, debug-location !45
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RET64 implicit $eax, debug-location !45
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...
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