llvm-6502/test/CodeGen/X86/dbg-const.ll
Andrew Trick 6e0b2a0cb0 Order CALLSEQ_START and CALLSEQ_END nodes.
Fixes PR16146: gdb.base__call-ar-st.exp fails after
pre-RA-sched=source fixes.

Patch by Xiaoyi Guo!

This also fixes an unsupported dbg.value test case. Codegen was
previously incorrect but the test was passing by luck.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182885 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-29 22:03:55 +00:00

49 lines
2.3 KiB
LLVM

; RUN: llc < %s - | FileCheck %s
;
; FIXME: A potentially more interesting test case would be:
; %call = @bar()
; dbg.value j=0
; %call2 = @bar()
; dbg.value j=%call
;
; We cannot current handle the above sequence because codegenprepare
; hoists the second dbg.value above %call2, which then appears to
; conflict with j=0. It does this because SelectionDAG cannot handle
; global debug values.
target triple = "x86_64-apple-darwin10.0.0"
;CHECK: ## DW_OP_constu
;CHECK-NEXT: .byte 42
define i32 @foobar() nounwind readonly noinline ssp {
entry:
tail call void @llvm.dbg.value(metadata !8, i64 0, metadata !6), !dbg !9
%call = tail call i32 @bar(), !dbg !11
tail call void @llvm.dbg.value(metadata !{i32 %call}, i64 0, metadata !6), !dbg !11
%call2 = tail call i32 @bar(), !dbg !11
%add = add nsw i32 %call2, %call, !dbg !12
ret i32 %add, !dbg !10
}
declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
declare i32 @bar() nounwind readnone
!llvm.dbg.cu = !{!2}
!0 = metadata !{i32 786478, metadata !1, metadata !"foobar", metadata !"foobar", metadata !"foobar", metadata !1, i32 12, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 true, i32 ()* @foobar, null, null, metadata !14, i32 0} ; [ DW_TAG_subprogram ]
!1 = metadata !{i32 786473, metadata !15} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 786449, i32 12, metadata !1, metadata !"clang version 2.9 (trunk 114183)", i1 true, metadata !"", i32 0, null, null, metadata !13, null, null, metadata !""} ; [ DW_TAG_compile_unit ]
!3 = metadata !{i32 786453, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null}
!4 = metadata !{metadata !5}
!5 = metadata !{i32 786468, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5}
!6 = metadata !{i32 786688, metadata !7, metadata !"j", metadata !1, i32 15, metadata !5, i32 0, null}
!7 = metadata !{i32 786443, metadata !1, metadata !0, i32 12, i32 52, i32 0} ; [ DW_TAG_lexical_block ]
!8 = metadata !{i32 42}
!9 = metadata !{i32 15, i32 12, metadata !7, null}
!10 = metadata !{i32 23, i32 3, metadata !7, null}
!11 = metadata !{i32 17, i32 3, metadata !7, null}
!12 = metadata !{i32 18, i32 3, metadata !7, null}
!13 = metadata !{metadata !0}
!14 = metadata !{metadata !6}
!15 = metadata !{metadata !"mu.c", metadata !"/private/tmp"}