| # RUN: llc %s -o - -run-pass=livedebugvalues | FileCheck %s |
| # |
| # The first func tests that, for two independent variable fragments defined in |
| # blocks 1 and 2, _both_ their locations are propagated into the exit block. |
| # LiveDebugValues previously ignored fragments and only propagated the last |
| # variable location seen. |
| # |
| # The second func tests that overlapping variable fragments are handled |
| # correctly -- that the redefinition of a particular fragment also clobbers |
| # any overlaps. The dbg value of $cx in block one should not be propagated to |
| # block two, because an overlapping dbg value inst has been encountered. |
| # |
| # The third function checks that DBG_VALUEs without fragments are seen as |
| # overlapping any DBG_VALUE with a fragment. |
| # |
| # CHECK-LABEL: foo |
| # CHECK-LABEL: bb.3.bb3: |
| # CHECK: DBG_VALUE $ebx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 32, 32) |
| # CHECK-NEXT: DBG_VALUE $eax, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| # CHECK-NEXT: XOR32rr |
| # CHECK-NEXT: RETQ |
| # |
| # CHECK-LABEL: bar |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE $cx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 0, 16) |
| |
| # CHECK-LABEL: bb.1.bb1: |
| # CHECK: DBG_VALUE $cx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 0, 16) |
| # CHECK-NEXT: MOV32rr |
| # CHECK-NEXT: DBG_VALUE $ax, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 8, 16) |
| # CHECK-NEXT: JMP_1 |
| |
| # CHECK-LABEL: bb.2.bb2: |
| # CHECK-NOT: DBG_VALUE |
| # CHECK: DBG_VALUE $ax, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 8, 16) |
| # CHECK-NEXT: MOV32rr |
| # CHECK-NEXT: ADD32ri8 |
| # CHECK-NEXT: DBG_VALUE $ebx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 32, 32) |
| # CHECK-NEXT: JMP_1 |
| |
| # CHECK-LABEL: bb.3.bb3: |
| # CHECK: DBG_VALUE $ebx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 32, 32) |
| # CHECK-NEXT: DBG_VALUE $ax, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 8, 16) |
| # CHECK-NEXT: XOR32rr |
| # CHECK-NEXT: RETQ |
| |
| # CHECK-LABEL: baz |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE $cx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 0, 16) |
| # CHECK-NEXT: JMP_1 %bb.1 |
| # |
| # CHECK-LABEL: bb.1.bb1: |
| # CHECK: DBG_VALUE $cx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 0, 16) |
| # CHECK-NEXT: MOV32rr |
| # CHECK-NEXT: DBG_VALUE $rdi, $noreg, !{{[0-9]+}}, !DIExpression() |
| # CHECK-NEXT: JMP_1 %bb.2 |
| # |
| # CHECK-LABEL: bb.2.bb2: |
| # CHECK-NOT: DBG_VALUE $cx |
| # CHECK: DBG_VALUE $rdi, $noreg, !{{[0-9]+}}, !DIExpression() |
| # CHECK-NEXT: MOV32rr |
| # CHECK-NEXT: ADD32ri8 |
| # CHECK-NEXT: DBG_VALUE $ebx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 32, 32) |
| # CHECK-NEXT: JMP_1 %bb.3 |
| # |
| # CHECK-LABEL: bb.3.bb3: |
| # CHECK-NOT: DBG_VALUE $rdi |
| # CHECK-NOT: DBG_VALUE $cx |
| # CHECK: DBG_VALUE $ebx, $noreg, !{{[0-9]+}}, |
| # CHECK-SAME: !DIExpression(DW_OP_LLVM_fragment, 32, 32) |
| # CHECK-NEXT: XOR32rr |
| # CHECK-NEXT: RETQ |
| |
| --- | |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i32 @foo(i32* %bees, i32* %output) !dbg !4 { |
| entry: |
| br label %bb1 |
| bb1: |
| br label %bb2 |
| bb2: |
| br label %bb3 |
| bb3: |
| ret i32 0 |
| } |
| |
| define i32 @bar(i32* %bees, i32* %output) !dbg !40 { |
| entry: |
| br label %bb1 |
| bb1: |
| br label %bb2 |
| bb2: |
| br label %bb3 |
| bb3: |
| ret i32 0 |
| } |
| |
| define i32 @baz(i32* %bees, i32* %output) !dbg !80 { |
| entry: |
| br label %bb1 |
| bb1: |
| br label %bb2 |
| bb2: |
| br label %bb3 |
| bb3: |
| ret i32 0 |
| } |
| |
| !llvm.module.flags = !{!0, !100} |
| !llvm.dbg.cu = !{!1} |
| |
| !100 = !{i32 2, !"Dwarf Version", i32 4} |
| !0 = !{i32 2, !"Debug Info Version", i32 3} |
| !1 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "beards", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug) |
| !2 = !DIFile(filename: "bees.cpp", directory: ".") |
| !3 = !DILocalVariable(name: "flannel", scope: !4, file: !2, line: 1, type: !16) |
| !4 = distinct !DISubprogram(name: "nope", scope: !2, file: !2, line: 1, spFlags: DISPFlagDefinition, unit: !1, retainedNodes: !13, type: !14, isDefinition: true) |
| !8 = !DILocation(line: 4, scope: !4) |
| !13 = !{!3} |
| !14 = !DISubroutineType(types: !15) |
| !15 = !{!16} |
| !16 = !DIBasicType(name: "looong", size: 64, align: 64, encoding: DW_ATE_signed) |
| !40 = distinct !DISubprogram(name: "toast", scope: !2, file: !2, line: 1, spFlags: DISPFlagDefinition, unit: !1, retainedNodes: !53, type: !14, isDefinition: true) |
| !43 = !DILocalVariable(name: "charm", scope: !40, file: !2, line: 1, type: !16) |
| !48 = !DILocation(line: 4, scope: !40) |
| !53 = !{!43} |
| !80 = distinct !DISubprogram(name: "mort", scope: !2, file: !2, line: 1, spFlags: DISPFlagDefinition, unit: !1, retainedNodes: !93, type: !14, isDefinition: true) |
| !83 = !DILocalVariable(name: "bodkin", scope: !80, file: !2, line: 1, type: !16) |
| !88 = !DILocation(line: 4, scope: !80) |
| !93 = !{!83} |
| |
| ... |
| --- |
| name: foo |
| tracksRegLiveness: true |
| registers: [] |
| liveins: |
| - { reg: '$rdi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| successors: %bb.1 |
| liveins: $rdi |
| |
| $ecx = XOR32rr undef $ecx, undef $ecx, implicit-def $eflags |
| JMP_1 %bb.1 |
| |
| bb.1.bb1 (align 4): |
| successors: %bb.2 |
| liveins: $ecx, $rdi |
| |
| $eax = MOV32rr killed $ecx, implicit-def $rax |
| DBG_VALUE $eax, $noreg, !3, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !8 |
| JMP_1 %bb.2 |
| |
| bb.2.bb2: |
| successors: %bb.3 |
| liveins: $eax |
| |
| $ebx = MOV32rr $eax |
| $ebx = ADD32ri8 $ebx, 3, implicit-def dead $eflags, implicit killed $rbx, implicit-def $rbx |
| DBG_VALUE $ebx, $noreg, !3, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location !8 |
| JMP_1 %bb.3 |
| |
| bb.3.bb3: |
| liveins: $eax, $ebx |
| $eax = XOR32rr killed $eax, killed $ebx, implicit-def $eflags |
| RETQ $eax, debug-location !8 |
| |
| ... |
| --- |
| name: bar |
| tracksRegLiveness: true |
| registers: [] |
| liveins: |
| - { reg: '$rdi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| successors: %bb.1 |
| liveins: $rdi |
| |
| $ecx = XOR32rr undef $ecx, undef $ecx, implicit-def $eflags |
| DBG_VALUE $cx, $noreg, !43, !DIExpression(DW_OP_LLVM_fragment, 0, 16), debug-location !48 |
| JMP_1 %bb.1 |
| |
| bb.1.bb1: |
| successors: %bb.2 |
| liveins: $ecx, $rdi |
| |
| $eax = MOV32rr killed $ecx, implicit-def $rax |
| DBG_VALUE $ax, $noreg, !43, !DIExpression(DW_OP_LLVM_fragment, 8, 16), debug-location !48 |
| JMP_1 %bb.2 |
| |
| bb.2.bb2: |
| successors: %bb.3 |
| liveins: $eax |
| |
| $ebx = MOV32rr $eax |
| $ebx = ADD32ri8 $ebx, 3, implicit-def dead $eflags, implicit killed $rbx, implicit-def $rbx |
| DBG_VALUE $ebx, $noreg, !43, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location !48 |
| JMP_1 %bb.3 |
| |
| bb.3.bb3: |
| liveins: $eax, $ebx |
| $eax = XOR32rr killed $eax, killed $ebx, implicit-def $eflags |
| RETQ $eax, debug-location !48 |
| |
| ... |
| --- |
| name: baz |
| tracksRegLiveness: true |
| registers: [] |
| liveins: |
| - { reg: '$rdi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| successors: %bb.1 |
| liveins: $rdi |
| |
| $ecx = XOR32rr undef $ecx, undef $ecx, implicit-def $eflags |
| DBG_VALUE $cx, $noreg, !83, !DIExpression(DW_OP_LLVM_fragment, 0, 16), debug-location !88 |
| JMP_1 %bb.1 |
| |
| bb.1.bb1: |
| successors: %bb.2 |
| liveins: $ecx, $rdi |
| |
| $eax = MOV32rr killed $ecx, implicit-def $rax |
| DBG_VALUE $rdi, $noreg, !83, !DIExpression(), debug-location !88 |
| JMP_1 %bb.2 |
| |
| bb.2.bb2: |
| successors: %bb.3 |
| liveins: $eax |
| |
| $ebx = MOV32rr $eax |
| $ebx = ADD32ri8 $ebx, 3, implicit-def dead $eflags, implicit killed $rbx, implicit-def $rbx |
| DBG_VALUE $ebx, $noreg, !83, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location !88 |
| JMP_1 %bb.3 |
| |
| bb.3.bb3: |
| liveins: $eax, $ebx |
| $eax = XOR32rr killed $eax, killed $ebx, implicit-def $eflags |
| RETQ $eax, debug-location !88 |
| |
| ... |
