Print section start labels when first switching to the section.

This is less brittle and avoids polluting the start of the file with every
debug section.

llvm-svn: 231898

4 files changed, 34 insertions, 2 deletions

diff --git a/llvm/test/DebugInfo/X86/dbg-i128-const.ll b/llvm/test/DebugInfo/X86/dbg-i128-const.ll
index ee428511e16..d172f01b64a 100644
--- a/llvm/test/DebugInfo/X86/dbg-i128-const.ll
+++ b/llvm/test/DebugInfo/X86/dbg-i128-const.ll
@@ -1,5 +1,6 @@
 ; RUN: llc -mtriple=x86_64-linux < %s | FileCheck %s
 
+; CHECK: .section        .debug_info
 ; CHECK: DW_AT_const_value
 ; CHECK-NEXT: 42
 
diff --git a/llvm/test/DebugInfo/X86/header.ll b/llvm/test/DebugInfo/X86/header.ll
new file mode 100644
index 00000000000..263f9ec923c
--- /dev/null
+++ b/llvm/test/DebugInfo/X86/header.ll
@@ -0,0 +1,29 @@
+; RUN: llc -mtriple x86_64-pc-linux < %s  | FileCheck %s
+
+; Test that we don't pollute the start of the file with debug sections
+
+; CHECK:       .text
+; CHECK-NEXT: .file	"<stdin>"
+; CHECK-NEXT: .globl	f
+; CHECK-NEXT: .align	16, 0x90
+; CHECK-NEXT: .type	f,@function
+; CHECK-NEXT: f:                                      # @f
+
+; CHECK: .section .debug_str
+
+define void @f() {
+  ret void, !dbg !9
+}
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!7, !8}
+
+!0 = !MDCompileUnit(language: DW_LANG_C99, file: !1, producer: "foo", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !MDFile(filename: "/foo/test.c", directory: "/foo")
+!2 = !{}
+!3 = !{!4}
+!4 = !MDSubprogram(name: "f", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, function: void ()* @f, variables: !2)
+!5 = !MDSubroutineType(types: !6)
+!6 = !{null}
+!7 = !{i32 2, !"Dwarf Version", i32 4}
+!8 = !{i32 2, !"Debug Info Version", i32 3}
+!9 = !MDLocation(line: 1, column: 15, scope: !4)
diff --git a/llvm/test/DebugInfo/X86/stmt-list.ll b/llvm/test/DebugInfo/X86/stmt-list.ll
index cbc10ebb467..7cad3fc7ee3 100644
--- a/llvm/test/DebugInfo/X86/stmt-list.ll
+++ b/llvm/test/DebugInfo/X86/stmt-list.ll
@@ -1,9 +1,10 @@
 ; RUN: llc -mtriple x86_64-pc-linux-gnu < %s | FileCheck %s
 
+; CHECK:      .long   .Lline_table_start0          # DW_AT_stmt_list
+
 ; CHECK:      .section        .debug_line,"",@progbits
 ; CHECK-NEXT: .Lsection_line:
-
-; CHECK:      .long   .Lline_table_start0          # DW_AT_stmt_list
+; CHECK-NEXT: .Lline_table_start0:
 
 define void @f() {
 entry:
diff --git a/llvm/test/DebugInfo/X86/tls.ll b/llvm/test/DebugInfo/X86/tls.ll
index 57497b5ce1a..d43a173485c 100644
--- a/llvm/test/DebugInfo/X86/tls.ll
+++ b/llvm/test/DebugInfo/X86/tls.ll
@@ -68,6 +68,7 @@
 
 ; check that the expected TLS address description is the first thing in the debug_addr section
 ; FISSION: .section    .debug_addr
+; FISSION: addr_sec:
 ; FISSION-NEXT: .quad  tls@DTPOFF
 ; FISSION-NEXT: .quad  glbl
 ; FISSION-NOT: .quad  glbl