forked from OSchip/llvm-project
[DebugInfo] Process DBG_VALUE_LIST in LiveDebugValues
This patch implements DBG_VALUE_LIST handling to the LiveDebugValues pass. This is a substantial change, and makes a few fundamental changes to the existing logic. We still use the basic model of a VarLocMap that is indexed by a LocIndex, with a VarLocSet (a CoalescingBitVector underneath) giving us efficient lookups of existing variable locations for a given location type. The main change is that the VarLocMap may contain a given VarLoc multiple times (once for each unique location operand), so that a VarLoc can be looked up from any of the registers that it uses. This means that each VarLoc has multiple corresponding LocIndexes; to allow us to iterate through the set of VarLocs (previously we would iterate through the VarLocSet), we now also maintain a single entry in the VarLocMap that contains every VarLoc exactly once. The VarLoc class itself is also changed; this change is much simpler, refactoring out location-specific members into a MachineLocation class and adding a vector of these locations. Differential Revision: https://reviews.llvm.org/D83890
This commit is contained in:
gbtozers
Stephen Tozer
parent
b4825a6d9c
commit
e2196ddcdb
File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,106 @@
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# RUN: llc -mtriple=x86_64-- -run-pass livedebugvalues -o - %s | FileCheck %s --implicit-check-not=DBG_VALUE_LIST
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#
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# Test that even after a move, clobbering a register terminates a DBG_VALUE_LIST.
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# Check the same for DBG_VALUE $noreg.
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#
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# CHECK: ![[VAR:[0-9]+]] = !DILocalVariable(name: "c"
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#
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# CHECK-LABEL: bb.0.entry:
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# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
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# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi
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# CHECK: $rbx = COPY killed $rdi
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# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
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# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi
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# CHECK-LABEL: bb.1:
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# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
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# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi
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# CHECK: $rsi = MOV64ri 0
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# CHECK-LABEL: bb.2:
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# no live-in!
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# CHECK: $rsi = MOV64ri 0
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# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
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# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi
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# CHECK-LABEL: bb.3:
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# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
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# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi
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# live-in to bb.3, then explicitly undef'd, should be no further locations
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# propagated.
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# CHECK-LABEL: bb.4:
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--- |
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; ModuleID = 'test.cpp'
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source_filename = "test.cpp"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: norecurse nounwind readnone uwtable
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define dso_local i32 @_Z3fooii(i32 %a, i32 %b) local_unnamed_addr !dbg !7 {
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entry:
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ret i32 0, !dbg !17
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}
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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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 = !{!"clang version 11.0.0"}
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!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooii", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12, !13, !14}
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!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 2, type: !10)
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!13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 2, type: !10)
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!14 = !DILocalVariable(name: "c", scope: !7, file: !1, line: 3, type: !10)
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!15 = !DILocation(line: 0, scope: !7)
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!16 = !DILocation(line: 4, column: 12, scope: !7)
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!17 = !DILocation(line: 4, column: 3, scope: !7)
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...
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---
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name: _Z3fooii
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fixedStack:
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- { id: 0, type: spill-slot, offset: -32, size: 8, alignment: 16, stack-id: default,
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callee-saved-register: '$rbx', callee-saved-restored: true }
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- { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
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callee-saved-register: '$rbp', callee-saved-restored: true }
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body: |
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bb.0.entry:
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liveins: $rdi, $rsi
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15
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$rbx = COPY killed $rdi
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$rdi = MOV64ri 0
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JMP_1 %bb.1
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bb.1:
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liveins: $rbx, $rsi
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$rsi = MOV64ri 0
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JMP_1 %bb.2
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bb.2:
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liveins: $rbx, $rsi
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$rsi = MOV64ri 0
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi, debug-location !15
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JMP_1 %bb.3
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bb.3:
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liveins: $rbx, $rsi
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DBG_VALUE $noreg, $noreg, !14, !DIExpression(), debug-location !15
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JMP_1 %bb.4
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bb.4:
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liveins: $rbx, $rsi
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RETQ $rbx, debug-location !17
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...
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@ -0,0 +1,160 @@
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# RUN: llc -mtriple=x86_64-- -run-pass livedebugvalues -o - %s | FileCheck %s --implicit-check-not=DBG_VALUE_LIST
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#
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# Test a series of joins, where:
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# * The locations agree, although registers have changed,
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# * A register down one of the predecessors has been def'd,
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# * The register operands to DBG_VALUE_LIST have been swapped,
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# * A spurious additional operand has been added to one path,
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# * The expressions are not the same (plus -> minus).
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#
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# Each join block below checks for one DBG_VALUE_LIST: either we re-state the var
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# location in a block for the next test, or it's created as a live-in and we
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# use that for the next test. Two DBG_VALUE_LISTs in a block would represent
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# a live-in that we didn't expect, and a test failure.
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#
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# Each conditional block should have at least one, possibly two.
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#
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# CHECK: ![[VAR:[0-9]+]] = !DILocalVariable(name: "c"
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#
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# CHECK-LABEL: bb.0.entry:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-LABEL: bb.1:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-LABEL: bb.2:
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# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
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# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi
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# CHECK-LABEL: bb.3:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-LABEL: bb.4:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-SAME: $rdi, $rsi
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# CHECK-LABEL: bb.5:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-SAME: $rsi, $rdi
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# CHECK-LABEL: bb.6:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-LABEL: bb.7:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-SAME: $rdi, $rsi, $rax
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# CHECK-LABEL: bb.8:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-LABEL: bb.9:
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK: DBG_VALUE_LIST ![[VAR]],
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# CHECK-SAME: DW_OP_minus
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# CHECK-LABEL: bb.10:
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--- |
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; ModuleID = 'test.cpp'
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source_filename = "test.cpp"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: norecurse nounwind readnone uwtable
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define dso_local i32 @_Z3fooii(i32 %a, i32 %b) local_unnamed_addr !dbg !7 {
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entry:
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ret i32 0, !dbg !17
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}
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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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 = !{!"clang version 11.0.0"}
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!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooii", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12, !13, !14}
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!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 2, type: !10)
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!13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 2, type: !10)
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!14 = !DILocalVariable(name: "c", scope: !7, file: !1, line: 3, type: !10)
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!15 = !DILocation(line: 0, scope: !7)
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!16 = !DILocation(line: 4, column: 12, scope: !7)
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!17 = !DILocation(line: 4, column: 3, scope: !7)
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...
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---
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name: _Z3fooii
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body: |
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bb.0.entry:
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liveins: $rdi, $rsi
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15
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CMP64ri8 $rdi, 0, implicit-def $eflags
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JCC_1 %bb.2, 4, implicit $eflags
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bb.1:
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liveins: $rdi, $rsi
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$rdi = MOV64ri 0
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$rsi = MOV64ri 0
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15
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bb.2:
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liveins: $rdi, $rsi
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; Should be a live-in loc here,
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CMP64ri8 $rdi, 0, implicit-def $eflags
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JCC_1 %bb.4, 4, implicit $eflags
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bb.3:
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liveins: $rdi, $rsi
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$rsi = MOV64ri 0
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bb.4:
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liveins: $rdi, $rsi
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; Should _not_ be a live-in loc here.
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15
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CMP64ri8 $rdi, 0, implicit-def $eflags
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JCC_1 %bb.6, 4, implicit $eflags
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bb.5:
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liveins: $rdi, $rsi
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; Flip some args,
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rsi, $rdi, debug-location !15
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bb.6:
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liveins: $rdi, $rsi
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; Should _not_ be a live-in loc here.
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$rax = MOV64ri 0
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15
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CMP64ri8 $rdi, 0, implicit-def $eflags
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JCC_1 %bb.8, 4, implicit $eflags
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bb.7:
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liveins: $rdi, $rsi
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; Add an extra, spurious, unused argument
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$rax = MOV64ri 1
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, $rax, debug-location !15
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bb.8:
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liveins: $rdi, $rsi
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; Should _not_ be a live-in loc here.
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$rax = MOV64ri 0
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15
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CMP64ri8 $rdi, 0, implicit-def $eflags
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JCC_1 %bb.10, 4, implicit $eflags
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bb.9:
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liveins: $rdi, $rsi
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; Replace add with sub in the expr
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$rax = MOV64ri 1
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DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_minus), $rdi, $rsi, debug-location !15
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bb.10:
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liveins: $rdi, $rsi
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; Should _not_ be a live-in loc here.
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RETQ
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...
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@ -0,0 +1,90 @@
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# RUN: llc -mtriple=x86_64-- -run-pass livedebugvalues -o - %s | FileCheck %s --implicit-check-not=DBG_VALUE_LIST
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#
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# The MIR below moves values from argument registers to callee saved registers,
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# moves that are followed by DBG_VALUEs and which should also result in
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# DBG_VALUE_LISTs moving their operands.
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#
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# CHECK: ![[VAR:[0-9]+]] = !DILocalVariable(name: "c"
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#
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# CHECK-LABEL: bb.0.entry:
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# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
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# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi
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# CHECK: $rbx = COPY killed $rdi
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# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
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# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi
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# CHECK-LABEL: bb.1:
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||||||
|
# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
|
||||||
|
# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rsi
|
||||||
|
# CHECK: $rbp = COPY killed $rsi
|
||||||
|
# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
|
||||||
|
# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rbp
|
||||||
|
# CHECK-LABEL: bb.2:
|
||||||
|
# CHECK: DBG_VALUE_LIST ![[VAR]], !DIExpression(DW_OP_LLVM_arg, 0,
|
||||||
|
# CHECK-SAME: DW_OP_LLVM_arg, 1, DW_OP_plus), $rbx, $rbp
|
||||||
|
--- |
|
||||||
|
; ModuleID = 'test.cpp'
|
||||||
|
source_filename = "test.cpp"
|
||||||
|
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
||||||
|
target triple = "x86_64-unknown-linux-gnu"
|
||||||
|
|
||||||
|
; Function Attrs: norecurse nounwind readnone uwtable
|
||||||
|
define dso_local i32 @_Z3fooii(i32 %a, i32 %b) local_unnamed_addr !dbg !7 {
|
||||||
|
entry:
|
||||||
|
ret i32 0, !dbg !17
|
||||||
|
}
|
||||||
|
|
||||||
|
; Function Attrs: nounwind readnone speculatable willreturn
|
||||||
|
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
||||||
|
|
||||||
|
!llvm.dbg.cu = !{!0}
|
||||||
|
!llvm.module.flags = !{!3, !4, !5}
|
||||||
|
!llvm.ident = !{!6}
|
||||||
|
|
||||||
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
||||||
|
!1 = !DIFile(filename: "test.cpp", directory: "/")
|
||||||
|
!2 = !{}
|
||||||
|
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
||||||
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
||||||
|
!5 = !{i32 1, !"wchar_size", i32 4}
|
||||||
|
!6 = !{!"clang version 11.0.0"}
|
||||||
|
!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooii", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
|
||||||
|
!8 = !DISubroutineType(types: !9)
|
||||||
|
!9 = !{!10, !10, !10}
|
||||||
|
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||||
|
!11 = !{!12, !13, !14}
|
||||||
|
!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 2, type: !10)
|
||||||
|
!13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 2, type: !10)
|
||||||
|
!14 = !DILocalVariable(name: "c", scope: !7, file: !1, line: 3, type: !10)
|
||||||
|
!15 = !DILocation(line: 0, scope: !7)
|
||||||
|
!16 = !DILocation(line: 4, column: 12, scope: !7)
|
||||||
|
!17 = !DILocation(line: 4, column: 3, scope: !7)
|
||||||
|
|
||||||
|
...
|
||||||
|
---
|
||||||
|
name: _Z3fooii
|
||||||
|
fixedStack:
|
||||||
|
- { id: 0, type: spill-slot, offset: -32, size: 8, alignment: 16, stack-id: default,
|
||||||
|
callee-saved-register: '$rbx', callee-saved-restored: true }
|
||||||
|
- { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
|
||||||
|
callee-saved-register: '$rbp', callee-saved-restored: true }
|
||||||
|
body: |
|
||||||
|
bb.0.entry:
|
||||||
|
liveins: $rdi, $rsi
|
||||||
|
|
||||||
|
DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15
|
||||||
|
$rbx = COPY killed $rdi
|
||||||
|
$rdi = MOV64ri 0
|
||||||
|
JMP_1 %bb.1
|
||||||
|
|
||||||
|
bb.1:
|
||||||
|
liveins: $rbx, $rsi
|
||||||
|
$rbp = COPY killed $rsi
|
||||||
|
$rsi = MOV64ri 0
|
||||||
|
JMP_1 %bb.2
|
||||||
|
|
||||||
|
bb.2:
|
||||||
|
liveins: $rbx, $rbp
|
||||||
|
RETQ $rbp, debug-location !17
|
||||||
|
|
||||||
|
...
|
||||||
|
|
||||||
|
|
@ -0,0 +1,77 @@
|
||||||
|
# RUN: llc -mtriple=x86_64-- -run-pass livedebugvalues -o - %s | FileCheck %s --implicit-check-not=DBG_VALUE_LIST
|
||||||
|
#
|
||||||
|
# A DBG_VALUE_LIST that has a component spilt and restored should had its
|
||||||
|
# expression and operands updated to refer to the stack for that period, and
|
||||||
|
# then return to normal once the value is restored.
|
||||||
|
#
|
||||||
|
# CHECK: ![[VAR:[0-9]+]] = !DILocalVariable(name: "c"
|
||||||
|
#
|
||||||
|
# CHECK-LABEL: bb.0.entry:
|
||||||
|
# CHECK: DBG_VALUE_LIST ![[VAR]],
|
||||||
|
# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus),
|
||||||
|
# CHECK-SAME: $rdi, $rsi,
|
||||||
|
# CHECK: MOV64mr $rsp, 1, $noreg, -16, $noreg, $rdi
|
||||||
|
# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]],
|
||||||
|
# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_LLVM_arg, 1, DW_OP_plus),
|
||||||
|
# CHECK-SAME: $rsp, $rsi,
|
||||||
|
# CHECK: $rdi = MOV64rm $rsp, 1, $noreg, -16,
|
||||||
|
# CHECK-NEXT: DBG_VALUE_LIST ![[VAR]],
|
||||||
|
# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus),
|
||||||
|
# CHECK-SAME: $rdi, $rsi,
|
||||||
|
|
||||||
|
--- |
|
||||||
|
; ModuleID = 'test.cpp'
|
||||||
|
source_filename = "test.cpp"
|
||||||
|
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
||||||
|
target triple = "x86_64-unknown-linux-gnu"
|
||||||
|
|
||||||
|
; Function Attrs: norecurse nounwind readnone uwtable
|
||||||
|
define dso_local i32 @_Z3fooii(i32 %a, i32 %b) local_unnamed_addr !dbg !7 {
|
||||||
|
entry:
|
||||||
|
ret i32 0, !dbg !17
|
||||||
|
}
|
||||||
|
|
||||||
|
; Function Attrs: nounwind readnone speculatable willreturn
|
||||||
|
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
||||||
|
|
||||||
|
!llvm.dbg.cu = !{!0}
|
||||||
|
!llvm.module.flags = !{!3, !4, !5}
|
||||||
|
!llvm.ident = !{!6}
|
||||||
|
|
||||||
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
||||||
|
!1 = !DIFile(filename: "test.cpp", directory: "/")
|
||||||
|
!2 = !{}
|
||||||
|
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
||||||
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
||||||
|
!5 = !{i32 1, !"wchar_size", i32 4}
|
||||||
|
!6 = !{!"clang version 11.0.0"}
|
||||||
|
!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooii", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
|
||||||
|
!8 = !DISubroutineType(types: !9)
|
||||||
|
!9 = !{!10, !10, !10}
|
||||||
|
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||||
|
!11 = !{!12, !13, !14}
|
||||||
|
!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 2, type: !10)
|
||||||
|
!13 = !DILocalVariable(name: "b", arg: 2, scope: !7, file: !1, line: 2, type: !10)
|
||||||
|
!14 = !DILocalVariable(name: "c", scope: !7, file: !1, line: 3, type: !10)
|
||||||
|
!15 = !DILocation(line: 0, scope: !7)
|
||||||
|
!16 = !DILocation(line: 4, column: 12, scope: !7)
|
||||||
|
!17 = !DILocation(line: 4, column: 3, scope: !7)
|
||||||
|
|
||||||
|
...
|
||||||
|
---
|
||||||
|
name: _Z3fooii
|
||||||
|
stack:
|
||||||
|
- { id: 0, offset: -16, size: 8, alignment: 8, type: spill-slot }
|
||||||
|
body: |
|
||||||
|
bb.0.entry:
|
||||||
|
liveins: $rdi, $rsi
|
||||||
|
|
||||||
|
$rsp = frame-setup SUB64ri8 $rsp, 24, implicit-def dead $eflags
|
||||||
|
DBG_VALUE_LIST !14, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $rsi, debug-location !15
|
||||||
|
MOV64mr $rsp, 1, _, -16, _, $rdi, debug-location !15 :: (store 8 into %stack.0)
|
||||||
|
$rax = COPY killed $rdi
|
||||||
|
$rdi = MOV64ri 0
|
||||||
|
$rdi = MOV64rm $rsp, 1, $noreg, -16, $noreg, debug-location !15 :: (load 8 from %stack.0)
|
||||||
|
RETQ
|
||||||
|
...
|
||||||
|
|
||||||
Loading…
Reference in New Issue