MIR Serialization: Serialize the machine instruction's debug location.

llvm-svn: 242938

2 files changed, 126 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/MIR/X86/expected-metadata-node-after-debug-location.mir b/llvm/test/CodeGen/MIR/X86/expected-metadata-node-after-debug-location.mir
new file mode 100644
index 00000000000..14143751096
--- /dev/null
+++ b/llvm/test/CodeGen/MIR/X86/expected-metadata-node-after-debug-location.mir
@@ -0,0 +1,61 @@
+# RUN: not llc -march=x86-64 -start-after machine-sink -stop-after machine-sink -o /dev/null %s 2>&1 | FileCheck %s
+
+--- |
+
+  define i32 @test(i32 %x) #0 {
+  entry:
+    %x.addr = alloca i32, align 4
+    store i32 %x, i32* %x.addr, align 4
+    call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !12, metadata !13), !dbg !14
+    %0 = load i32, i32* %x.addr, align 4, !dbg !15
+    ret i32 %0, !dbg !15
+  }
+
+  declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+  attributes #0 = { nounwind "no-frame-pointer-elim"="false" }
+  attributes #1 = { nounwind readnone }
+
+  !llvm.dbg.cu = !{!0}
+  !llvm.module.flags = !{!9, !10}
+  !llvm.ident = !{!11}
+
+  !0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+  !1 = !DIFile(filename: "test.ll", directory: "")
+  !2 = !{}
+  !3 = !{!4}
+  !4 = !DISubprogram(name: "test", scope: !5, file: !5, line: 4, type: !6, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, function: i32 (i32)* @test, variables: !2)
+  !5 = !DIFile(filename: "test.c", directory: "")
+  !6 = !DISubroutineType(types: !7)
+  !7 = !{!8, !8}
+  !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+  !9 = !{i32 2, !"Dwarf Version", i32 4}
+  !10 = !{i32 2, !"Debug Info Version", i32 3}
+  !11 = !{!"clang version 3.7.0"}
+  !12 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "x", arg: 1, scope: !4, file: !5, line: 4, type: !8)
+  !13 = !DIExpression()
+  !14 = !DILocation(line: 4, scope: !4)
+  !15 = !DILocation(line: 8, scope: !4)
+
+...
+---
+name:            test
+isSSA:           true
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: gr32 }
+frameInfo:
+  maxAlignment:  4
+stack:
+  - { id: 0, name: x.addr, size: 4, alignment: 4 }
+body:
+  - id:          0
+    name:        entry
+    instructions:
+      - '%0 = COPY %edi'
+      # CHECK: [[@LINE+1]]:51: expected a metadata node after 'debug-location'
+      - 'DBG_VALUE _, 0, !12, !13, debug-location 14'
+      - 'MOV32mr %stack.x.addr, 1, _, 0, _, %0'
+      - '%eax = COPY %0'
+      - 'RETQ %eax'
+...
diff --git a/llvm/test/CodeGen/MIR/X86/instructions-debug-location.mir b/llvm/test/CodeGen/MIR/X86/instructions-debug-location.mir
new file mode 100644
index 00000000000..c769666b9af
--- /dev/null
+++ b/llvm/test/CodeGen/MIR/X86/instructions-debug-location.mir
@@ -0,0 +1,65 @@
+# RUN: llc -march=x86-64 -start-after machine-sink -stop-after machine-sink -o /dev/null %s | FileCheck %s
+# This test ensures that the MIR parser parses the machine instruction's
+# debug location metadata correctly.
+
+--- |
+
+  define i32 @test(i32 %x) #0 {
+  entry:
+    %x.addr = alloca i32, align 4
+    store i32 %x, i32* %x.addr, align 4
+    call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !12, metadata !13), !dbg !14
+    %0 = load i32, i32* %x.addr, align 4, !dbg !15
+    ret i32 %0, !dbg !15
+  }
+
+  declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+  attributes #0 = { nounwind "no-frame-pointer-elim"="false" }
+  attributes #1 = { nounwind readnone }
+
+  !llvm.dbg.cu = !{!0}
+  !llvm.module.flags = !{!9, !10}
+  !llvm.ident = !{!11}
+
+  !0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+  !1 = !DIFile(filename: "test.ll", directory: "")
+  !2 = !{}
+  !3 = !{!4}
+  !4 = !DISubprogram(name: "test", scope: !5, file: !5, line: 4, type: !6, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, function: i32 (i32)* @test, variables: !2)
+  !5 = !DIFile(filename: "test.c", directory: "")
+  !6 = !DISubroutineType(types: !7)
+  !7 = !{!8, !8}
+  !8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+  !9 = !{i32 2, !"Dwarf Version", i32 4}
+  !10 = !{i32 2, !"Debug Info Version", i32 3}
+  !11 = !{!"clang version 3.7.0"}
+  !12 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "x", arg: 1, scope: !4, file: !5, line: 4, type: !8)
+  !13 = !DIExpression()
+  !14 = !DILocation(line: 4, scope: !4)
+  !15 = !DILocation(line: 8, scope: !4)
+
+...
+---
+name:            test
+isSSA:           true
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: gr32 }
+frameInfo:
+  maxAlignment:  4
+stack:
+  - { id: 0, name: x.addr, size: 4, alignment: 4 }
+body:
+  - id:           0
+    name:         entry
+    instructions:
+      # CHECK: DBG_VALUE _, 0, !12, !13, debug-location !14
+      # CHECK: %eax = COPY %0, debug-location !15
+      # CHECK: RETQ %eax, debug-location !15
+      - '%0 = COPY %edi'
+      - 'DBG_VALUE _, 0, !12, !13, debug-location !14'
+      - 'MOV32mr %stack.0.x.addr, 1, _, 0, _, %0'
+      - '%eax = COPY %0, debug-location !15'
+      - 'RETQ %eax, debug-location !15'
+...