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llvm-project/llvm/test/CodeGen/X86/tail-dup-debugloc.ll

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X86: Do not use llc -march in tests. `llc -march` is problematic because it only switches the target architecture, but leaves the operating system unchanged. This occasionally leads to indeterministic tests because the OS from LLVM_DEFAULT_TARGET_TRIPLE is used. However we can simply always use `llc -mtriple` instead. This changes all the tests to do this to avoid people using -march when they copy and paste parts of tests. See also the discussion in https://reviews.llvm.org/D35287 llvm-svn: 309774
2017-08-02 08:28:10 +08:00
; RUN: llc -stop-after=tailduplication < %s | FileCheck %s
[TailDuplicator] Maintain DebugLoc for branch instructions Summary: Existing implementation of duplicateSimpleBB function drops DebugLoc metadata of branch instructions during the transformation. This patch addresses this issue by making newly created branch instructions to keep the metadata of replaced branch instructions. Reviewers: qcolombet, craig.topper, aprantl, MatzeB, sanjoy, dblaikie Reviewed By: dblaikie Subscribers: dblaikie, llvm-commits Differential Revision: https://reviews.llvm.org/D30026 llvm-svn: 296371
2017-02-28 03:30:01 +08:00
;
; Check that DebugLoc attached to the branch instruction of
; 'while.cond1.preheader.lr.ph' survives after tailduplication pass.
;
; CHECK: [[DLOC:![0-9]+]] = !DILocation(line: 9, column: 5, scope: !{{[0-9]+}})
; CHECK: [[VREG:%[^ ]+]] = COPY %rdi
; CHECK: TEST64rr [[VREG]], [[VREG]]
; CHECK-NEXT: JE_1 {{.+}}, debug-location [[DLOC]]
; CHECK-NEXT: JMP_1 {{.+}}, debug-location [[DLOC]]
target triple = "x86_64-unknown-linux-gnu"
%struct.Node = type { %struct.Node* }
define i32 @foo(%struct.Node* readonly %node, %struct.Node* readnone %root) !dbg !6 {
entry:
%cmp = icmp eq %struct.Node* %node, %root, !dbg !8
br i1 %cmp, label %while.end4, label %while.cond1.preheader.lr.ph, !dbg !10
while.cond1.preheader.lr.ph: ; preds = %entry
%tobool = icmp eq %struct.Node* %node, null
br i1 %tobool, label %while.cond1.preheader.us.preheader, label %while.body2.preheader, !dbg !11
while.body2.preheader: ; preds = %while.cond1.preheader.lr.ph
br label %while.body2, !dbg !11
while.cond1.preheader.us.preheader: ; preds = %while.cond1.preheader.lr.ph
br label %while.cond1.preheader.us, !dbg !10
while.cond1.preheader.us: ; preds = %while.cond1.preheader.us.preheader, %while.cond1.preheader.us
br label %while.cond1.preheader.us, !dbg !10
while.body2: ; preds = %while.body2.preheader, %while.body2
br label %while.body2, !dbg !11
while.end4: ; preds = %entry
ret i32 0, !dbg !12
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, emissionKind: LineTablesOnly)
!1 = !DIFile(filename: "foo.c", directory: "b/")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 4}
!4 = !{i32 2, !"Debug Info Version", i32 3}
!5 = !{}
!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 5, type: !7, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
!7 = !DISubroutineType(types: !2)
!8 = !DILocation(line: 7, column: 15, scope: !9)
!9 = !DILexicalBlockFile(scope: !6, file: !1, discriminator: 2)
!10 = !DILocation(line: 7, column: 3, scope: !9)
!11 = !DILocation(line: 9, column: 5, scope: !9)
!12 = !DILocation(line: 14, column: 3, scope: !6)