Add a testcase for r103135, explicitly representing unknown

locations in debug line info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103189 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/unknown-location.ll b/test/CodeGen/X86/unknown-location.ll
new file mode 100644 (file)
index 0000000..04b41c4
--- /dev/null
+++ b/test/CodeGen/X86/unknown-location.ll
@@ -0,0 +1,36 @@
+; RUN: llc < %s -asm-verbose=false -march=x86-64 | FileCheck %s
+
+; The divide instruction does not have a debug location. CodeGen should
+; represent this in the debug information. This is checked by a check
+; for a label between the code for the add and the code for the divide,
+; which indicates that the add's location doesn't spill over unto the
+; divide.
+
+;      CHECK: Ltmp
+;      CHECK:         movl    %edx, %r8d
+; CHECK-NEXT:         leal    (%rdi,%rsi), %eax
+; CHECK-NEXT: Ltmp
+; CHECK-NEXT:         cltd
+; CHECK-NEXT:         idivl   %r8d
+; CHECK-NEXT: Ltmp
+; CHECK-NEXT:         addl    %ecx, %eax
+; CHECK-NEXT:         ret
+; CHECK-NEXT: Ltmp
+
+define i32 @foo(i32 %w, i32 %x, i32 %y, i32 %z) nounwind {
+entry:
+  %a = add  i32 %w, %x, !dbg !8
+  %b = sdiv i32 %a, %y
+  %c = add  i32 %b, %z, !dbg !8
+  ret i32 %c, !dbg !8
+}
+
+!0 = metadata !{i32 524545, metadata !1, metadata !"x", metadata !2, i32 1, metadata !6} ; [ DW_TAG_arg_variable ]
+!1 = metadata !{i32 524334, i32 0, metadata !2, metadata !"foo", metadata !"foo", metadata !"foo", metadata !2, i32 1, metadata !4, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 false} ; [ DW_TAG_subprogram ]
+!2 = metadata !{i32 524329, metadata !"test.c", metadata !"/dir", metadata !3} ; [ DW_TAG_file_type ]
+!3 = metadata !{i32 524305, i32 0, i32 12, metadata !"test.c", metadata !".", metadata !"producer", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
+!4 = metadata !{i32 524309, metadata !2, metadata !"", metadata !2, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !5, i32 0, null} ; [ DW_TAG_subroutine_type ]
+!5 = metadata !{metadata !6}
+!6 = metadata !{i32 524324, metadata !2, metadata !"int", metadata !2, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
+!7 = metadata !{i32 524299, metadata !1, i32 1, i32 30} ; [ DW_TAG_lexical_block ]
+!8 = metadata !{i32 4, i32 3, metadata !7, null}