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llvm-mirror/test/DebugInfo/ARM/prologue_end.ll
Saleem Abdulrasool b56f241280 CodeGen: avoid emitting unnecessary CFI
Remove unnecessary clutter in assembly output.  When using SjLj EH, the CFI is
not actually used for anything.  Do not emit the CFI needlessly.  The minor test
adjustments are interesting.  The prologue test was just overzealous matcching.
The interesting case is the LSDA change.  It was originally added to ensure that
various compilations did not mangle the name (it explicitly checked the name!).
However, subsequent cleanups made it more reliant on the CFI to find the name.
Parse the generated code flow to generically find the label still.

llvm-svn: 275614
2016-07-15 21:10:29 +00:00

45 lines
1.6 KiB
LLVM

; RUN: llc -disable-fp-elim -O0 %s -mtriple armv7-apple-darwin -o - | FileCheck %s
; RUN: llc -disable-fp-elim -O0 %s -mtriple thumbv7-apple-darwin -o - | FileCheck %s
; int func(void);
; void prologue_end_test() {
; func();
; func();
; }
define void @prologue_end_test() nounwind uwtable !dbg !4 {
; CHECK: prologue_end_test:
; CHECK: push {r7, lr}
; CHECK: {{mov r7, sp|add r7, sp}}
; CHECK: sub sp
; CHECK: .loc 1 3 3 prologue_end
; CHECK: bl {{_func|Ltmp}}
; CHECK: bl {{_func|Ltmp}}
entry:
%call = call i32 @func(), !dbg !13
%call1 = call i32 @func(), !dbg !14
ret void, !dbg !15
}
declare i32 @func()
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!7, !8, !9, !10, !11}
!llvm.ident = !{!12}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 242129)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "foo.c", directory: "/tmp")
!2 = !{}
!4 = distinct !DISubprogram(name: "prologue_end_test", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, unit: !0, variables: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{null}
!7 = !{i32 2, !"Dwarf Version", i32 2}
!8 = !{i32 2, !"Debug Info Version", i32 3}
!9 = !{i32 1, !"wchar_size", i32 4}
!10 = !{i32 1, !"min_enum_size", i32 4}
!11 = !{i32 1, !"PIC Level", i32 2}
!12 = !{!"clang version 3.7.0 (trunk 242129)"}
!13 = !DILocation(line: 3, column: 3, scope: !4)
!14 = !DILocation(line: 4, column: 3, scope: !4)
!15 = !DILocation(line: 5, column: 1, scope: !4)