[MachineOutliner] Recommit r312194, missed optimization remarks

Before, this commit caused a buildbot failure:

http://bb.pgr.jp/builders/test-llvm-i686-linux-RA/builds/6026/steps/test_llvm/logs/LLVM%20%3A%3A%20CodeGen__AArch64__machine-outliner-remarks.ll

This was caused by the Key value in DiagnosticInfoOptimizationBase being
deallocated before emitting the remarks defined in MachineOutliner.cpp. As of
r312277 this should no longer be an issue.
 

llvm-svn: 312280

1 files changed, 73 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/AArch64/machine-outliner-remarks.ll b/llvm/test/CodeGen/AArch64/machine-outliner-remarks.ll
new file mode 100644
index 00000000000..113f3431101
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/machine-outliner-remarks.ll
@@ -0,0 +1,73 @@
+; RUN: llc %s -enable-machine-outliner -mtriple=aarch64-unknown-unknown -pass-remarks-missed=machine-outliner -o /dev/null 2>&1 | FileCheck %s
+; CHECK: machine-outliner-remarks.ll:5:9:
+; CHECK-SAME: Did not outline 2 instructions from 2 locations.
+; CHECK-SAME: Instructions from outlining all occurrences (9) >=
+; CHECK-SAME: Unoutlined instruction count (4)
+; CHECK-SAME: (Also found at: machine-outliner-remarks.ll:13:9)
+; RUN: llc %s -enable-machine-outliner -mtriple=aarch64-unknown-unknown -o /dev/null -pass-remarks-missed=machine-outliner -pass-remarks-output=%t.yaml
+; RUN: cat %t.yaml | FileCheck %s -check-prefix=YAML
+; YAML: --- !Missed
+; YAML-NEXT: Pass:            machine-outliner
+; YAML-NEXT: Name:            NotOutliningCheaper
+; YAML-NEXT: DebugLoc:        { File: machine-outliner-remarks.ll, Line: 5, Column: 9 }
+; YAML-NEXT: Function:        dog
+; YAML-NEXT: Args:            
+; YAML-NEXT:   - String:          'Did not outline '
+; YAML-NEXT:   - Length:          '2'
+; YAML-NEXT:   - String:          ' instructions'
+; YAML-NEXT:   - String:          ' from '
+; YAML-NEXT:   - NumOccurrences:  '2'
+; YAML-NEXT:   - String:          ' locations.'
+; YAML-NEXT:   - String:          ' Instructions from outlining all occurrences ('
+; YAML-NEXT:   - OutliningCost:   '9'
+; YAML-NEXT:   - String:          ')'
+; YAML-NEXT:   - String:          ' >= Unoutlined instruction count ('
+; YAML-NEXT:   - NotOutliningCost: '4'
+; YAML-NEXT:   - String:          ')'
+; YAML-NEXT:   - String:          ' (Also found at: '
+; YAML-NEXT:   - OtherStartLoc1:  'machine-outliner-remarks.ll:13:9'
+; YAML-NEXT:     DebugLoc:        { File: machine-outliner-remarks.ll, Line: 13, Column: 9 }
+; YAML-NEXT:   - String:          ')'
+
+define void @dog() #0 !dbg !8 {
+entry:
+  %x = alloca i32, align 4
+  %y = alloca i32, align 4
+  store i32 0, i32* %x, align 4, !dbg !11
+  store i32 1, i32* %y, align 4, !dbg !12
+  ret void, !dbg !13
+}
+
+define void @cat() #0 !dbg !14 {
+entry:
+  %x = alloca i32, align 4
+  %y = alloca i32, align 4
+  store i32 0, i32* %x, align 4, !dbg !15
+  store i32 1, i32* %y, align 4, !dbg !16
+  ret void, !dbg !17
+}
+
+attributes #0 = { noredzone nounwind ssp uwtable "no-frame-pointer-elim"="false" "target-cpu"="cyclone" }
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5, !6}
+!llvm.ident = !{!7}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
+!1 = !DIFile(filename: "machine-outliner-remarks.ll", directory: "/tmp")
+!2 = !{}
+!3 = !{i32 2, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"wchar_size", i32 4}
+!6 = !{i32 7, !"PIC Level", i32 2}
+!7 = !{!""}
+!8 = distinct !DISubprogram(name: "dog", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
+!9 = !DISubroutineType(types: !10)
+!10 = !{null}
+!11 = !DILocation(line: 4, column: 9, scope: !8)
+!12 = !DILocation(line: 5, column: 9, scope: !8)
+!13 = !DILocation(line: 6, column: 1, scope: !8)
+!14 = distinct !DISubprogram(name: "cat", scope: !1, file: !1, line: 10, type: !9, isLocal: false, isDefinition: true, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
+!15 = !DILocation(line: 12, column: 9, scope: !14)
+!16 = !DILocation(line: 13, column: 9, scope: !14)
+!17 = !DILocation(line: 14, column: 1, scope: !14)