140e1894f2
Patch 1/4 adding bitcode support. Store whether or not a function is using Key Instructions in its DISubprogram so that we don't need to rely on the -mllvm flag -dwarf-use-key-instructions to determine whether or not to interpret Key Instructions metadata to decide is_stmt placement at DWARF emission time. This makes bitcode support simple and enables well defined mixing of non-key-instructions and key-instructions functions in an LTO context. This patch adds the bit (using DISubprogram::SubclassData1). PR 144104 and 144103 use it during DWARF emission. PR 44102 adds bitcode support. See pull request for overview of alternative attempts.
76 lines
2.9 KiB
LLVM
76 lines
2.9 KiB
LLVM
; RUN: opt --passes=loop-rotate %s -S -o - | FileCheck %s
|
|
|
|
;; Rotate:
|
|
;; +------------------> for.end.
|
|
;; |
|
|
;; entry -> for.cond -> for.body
|
|
;; ^ |
|
|
;; +-----------+
|
|
;;
|
|
;; Into:
|
|
;;
|
|
;; +------> for.end.
|
|
;; |
|
|
;; entry (+ for.cond`0) -> for.body (+ for.cond) -+
|
|
;; ^ |
|
|
;; +-------------------+
|
|
;; Check for.cond's duplicated store and br have their source atoms remapped.
|
|
|
|
; CHECK: entry:
|
|
; CHECK: store i32 0, ptr @glob, align 16, !dbg [[G3R1:![0-9]+]]
|
|
; CHECK: br label %for.body, !dbg [[G4R1:![0-9]+]]
|
|
;
|
|
; CHECK: for.body:
|
|
; CHECK: store i32 {{.*}}, ptr @glob, align 16, !dbg [[G1R1:![0-9]+]]
|
|
; CHECK: [[CMP:%.*]] = icmp slt i32 {{.*}}, 100, !dbg [[G2R2:![0-9]+]]
|
|
; CHECK: br i1 [[CMP]], label %for.body, label %for.end, !dbg [[G2R1:![0-9]+]]
|
|
;
|
|
; CHECK: distinct !DISubprogram(name: "test1", {{.*}}keyInstructions: true)
|
|
; CHECK: [[G3R1]] = !DILocation(line: 4{{.*}}, atomGroup: 3, atomRank: 1)
|
|
; CHECK: [[G4R1]] = !DILocation(line: 6{{.*}}, atomGroup: 4, atomRank: 1)
|
|
; CHECK: [[G1R1]] = !DILocation(line: 4{{.*}}, atomGroup: 1, atomRank: 1)
|
|
; CHECK: [[G2R2]] = !DILocation(line: 5{{.*}}, atomGroup: 2, atomRank: 2)
|
|
; CHECK: [[G2R1]] = !DILocation(line: 6{{.*}}, atomGroup: 2, atomRank: 1)
|
|
|
|
@glob = global i32 0
|
|
|
|
define void @test1() #0 !dbg !5 {
|
|
entry:
|
|
%array = alloca [20 x i32], align 16
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
store i32 %i.0, ptr @glob, align 16, !dbg !DILocation(line: 4, scope: !5, atomGroup: 1, atomRank: 1)
|
|
%cmp = icmp slt i32 %i.0, 100, !dbg !DILocation(line: 5, scope: !5, atomGroup: 2, atomRank: 2)
|
|
br i1 %cmp, label %for.body, label %for.end, !dbg !DILocation(line: 6, scope: !5, atomGroup: 2, atomRank: 1)
|
|
|
|
for.body: ; preds = %for.cond
|
|
%inc = add nsw i32 %i.0, 1
|
|
store i32 0, ptr %array, align 16
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
%arrayidx.lcssa = phi ptr [ %array, %for.cond ]
|
|
call void @g(ptr %arrayidx.lcssa)
|
|
ret void
|
|
}
|
|
|
|
declare void @g(ptr)
|
|
|
|
attributes #0 = { nounwind ssp }
|
|
attributes #1 = { noduplicate }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.debugify = !{!2, !3}
|
|
!llvm.module.flags = !{!4}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
|
|
!1 = !DIFile(filename: "test.ll", directory: "/")
|
|
!2 = !{i32 12}
|
|
!3 = !{i32 0}
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!5 = distinct !DISubprogram(name: "test1", linkageName: "test1", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, keyInstructions: true)
|
|
!6 = !DISubroutineType(types: !7)
|
|
!7 = !{}
|