Add a "debugger tuning" concept that allows us to fine-tune how we

emit debug info, according to the preferences of the different
debuggers used on various targets.
Darwin and FreeBSD default to tuning for LLDB; PS4 defaults to tuning for
the SCE (Sony Computer Entertainment) debugger.  All others default to GDB.

Differential Revision: http://reviews.llvm.org/D8506

llvm-svn: 242338

2 files changed, 45 insertions, 1 deletions

diff --git a/llvm/test/DebugInfo/X86/debugger-tune.ll b/llvm/test/DebugInfo/X86/debugger-tune.ll
new file mode 100644
index 00000000000..7d862e31517
--- /dev/null
+++ b/llvm/test/DebugInfo/X86/debugger-tune.ll
@@ -0,0 +1,44 @@
+; Verify target-based defaults for "debugger tuning," and the ability to
+; override defaults.
+; We use existence of the debug_pubnames section to distinguish the GDB case,
+; and the apple_names section to distinguish the LLDB case. SCE has neither.
+
+; Verify defaults for various targets.
+; RUN: llc -mtriple=x86_64-scei-ps4 -filetype=obj < %s | llvm-readobj -sections - | FileCheck --check-prefix=SCE %s
+; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj < %s | llvm-readobj -sections - | FileCheck --check-prefix=LLDB %s
+; RUN: llc -mtriple=x86_64-pc-freebsd -filetype=obj < %s | llvm-readobj -sections - | FileCheck --check-prefix=LLDB %s
+; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj < %s | llvm-readobj -sections - | FileCheck --check-prefix=GDB %s
+
+; We can override defaults.
+; RUN: llc -mtriple=x86_64-scei-ps4 -filetype=obj -debugger-tune=gdb < %s | llvm-readobj -sections - | FileCheck --check-prefix=GDB %s
+; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj -debugger-tune=lldb < %s | llvm-readobj -sections - | FileCheck --check-prefix=LLDB %s
+; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj -debugger-tune=sce < %s | llvm-readobj -sections - | FileCheck --check-prefix=SCE %s
+
+
+; GDB-NOT: apple_names
+; GDB: debug_pubnames
+; GDB-NOT: apple_names
+
+; LLDB-NOT: debug_pubnames
+; LLDB: apple_names
+; LLDB-NOT: debug_pubnames
+
+; SCE-NOT: debug_pubnames
+; SCE-NOT: apple_names
+
+
+@globalvar = global i32 0, align 4
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!6, !7}
+!llvm.ident = !{!8}
+
+!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 238808)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
+!1 = !DIFile(filename: "debugger-tune.cpp", directory: "/home/probinson/projects/scratch")
+!2 = !{}
+!3 = !{!4}
+!4 = !DIGlobalVariable(name: "globalvar", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, variable: i32* @globalvar)
+!5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!6 = !{i32 2, !"Dwarf Version", i32 4}
+!7 = !{i32 2, !"Debug Info Version", i32 3}
+!8 = !{!"clang version 3.7.0 (trunk 238808)"}
diff --git a/llvm/test/DebugInfo/X86/tls.ll b/llvm/test/DebugInfo/X86/tls.ll
index 55930f0bacf..e54d925f68b 100644
--- a/llvm/test/DebugInfo/X86/tls.ll
+++ b/llvm/test/DebugInfo/X86/tls.ll
@@ -14,7 +14,7 @@
 ; RUN:   | FileCheck --check-prefix=DARWIN --check-prefix=STDOP %s
 
 ; RUN: llc %s -o - -filetype=asm -O0 -mtriple=x86_64-unknown-freebsd \
-; RUN:   | FileCheck --check-prefix=SINGLE --check-prefix=SINGLE-64 --check-prefix=GNUOP %s
+; RUN:   | FileCheck --check-prefix=SINGLE --check-prefix=SINGLE-64 --check-prefix=STDOP %s
 
 ; FIXME: add relocation and DWARF expression support to llvm-dwarfdump & use
 ; that here instead of raw assembly printing