[DebugInfo] Fix ARM/AArch64 prologue_end position. Related to D11268.

Summary:
This review is related to another review request http://reviews.llvm.org/D11268, does the same and merely fixes a couple of issues with it.

D11268 is quite old and has merge conflicts against the current trunk.
This request 
 - rebases D11268 onto the new trunk;
 - resolves the merge conflicts;
 - fixes the prologue_end tests, which do not pass due to the subprogram definitions not marked as distinct.

Reviewers: echristo, rengolin, kubabrecka

Subscribers: aemerson, rengolin, jyknight, dsanders, llvm-commits, asl

Differential Revision: http://reviews.llvm.org/D14338

llvm-svn: 252177

4 files changed, 172 insertions, 0 deletions

diff --git a/llvm/test/DebugInfo/AArch64/prologue_end.ll b/llvm/test/DebugInfo/AArch64/prologue_end.ll
new file mode 100644
index 00000000000..4887fb06099
--- /dev/null
+++ b/llvm/test/DebugInfo/AArch64/prologue_end.ll
@@ -0,0 +1,43 @@
+; RUN: llc -disable-fp-elim -O0 %s -mtriple aarch64-apple-darwin -o - | FileCheck %s

+

+; int func(void);

+; void prologue_end_test() {

+;   func();

+;   func();

+; }

+

+define void @prologue_end_test() nounwind uwtable {

+  ; CHECK: prologue_end_test:

+  ; CHECK: .cfi_startproc

+  ; CHECK: stp x29, x30

+  ; CHECK: mov x29, sp

+  ; CHECK: sub sp, sp

+  ; CHECK: .loc 1 3 3 prologue_end

+  ; CHECK: bl _func

+  ; CHECK: bl _func

+entry:

+  %call = call i32 @func(), !dbg !11

+  %call1 = call i32 @func(), !dbg !12

+  ret void, !dbg !13

+}

+

+declare i32 @func()

+

+!llvm.dbg.cu = !{!0}

+!llvm.module.flags = !{!7, !8, !9}

+!llvm.ident = !{!10}

+

+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 242129)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)

+!1 = !DIFile(filename: "foo.c", directory: "/tmp")

+!2 = !{}

+!3 = !{!4}

+!4 = distinct !DISubprogram(name: "prologue_end_test", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, function: void ()* @prologue_end_test, 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, !"PIC Level", i32 2}

+!10 = !{!"clang version 3.7.0 (trunk 242129)"}

+!11 = !DILocation(line: 3, column: 3, scope: !4)

+!12 = !DILocation(line: 4, column: 3, scope: !4)

+!13 = !DILocation(line: 5, column: 1, scope: !4)

diff --git a/llvm/test/DebugInfo/ARM/prologue_end.ll b/llvm/test/DebugInfo/ARM/prologue_end.ll
new file mode 100644
index 00000000000..16a594b13c7
--- /dev/null
+++ b/llvm/test/DebugInfo/ARM/prologue_end.ll
@@ -0,0 +1,46 @@
+; RUN: llc -disable-fp-elim -O0 %s -mtriple armv7-apple-darwin -o - | FileCheck %s

+; RUN: llc -disable-fp-elim -O0 %s -mtriple thumbv1-apple-darwin -o - | FileCheck %s

+

+; int func(void);

+; void prologue_end_test() {

+;   func();

+;   func();

+; }

+

+define void @prologue_end_test() nounwind uwtable {

+  ; CHECK: prologue_end_test:

+  ; CHECK: .cfi_startproc

+  ; 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: 1, enums: !2, subprograms: !3)

+!1 = !DIFile(filename: "foo.c", directory: "/tmp")

+!2 = !{}

+!3 = !{!4}

+!4 = distinct !DISubprogram(name: "prologue_end_test", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, function: void ()* @prologue_end_test, 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)

diff --git a/llvm/test/DebugInfo/Sparc/prologue_end.ll b/llvm/test/DebugInfo/Sparc/prologue_end.ll
new file mode 100644
index 00000000000..ce73b366927
--- /dev/null
+++ b/llvm/test/DebugInfo/Sparc/prologue_end.ll
@@ -0,0 +1,41 @@
+; RUN: llc -disable-fp-elim -O0 %s -mtriple sparc -o - | FileCheck %s

+

+; int func(void);

+; void prologue_end_test() {

+;   func();

+;   func();

+; }

+

+define void @prologue_end_test() nounwind uwtable {

+  ; CHECK: prologue_end_test:

+  ; CHECK: .cfi_startproc

+  ; CHECK: save %sp

+  ; CHECK: .loc 1 3 3 prologue_end

+  ; CHECK: call func

+  ; CHECK: call func

+entry:

+  %call = call i32 @func(), !dbg !11

+  %call1 = call i32 @func(), !dbg !12

+  ret void, !dbg !13

+}

+

+declare i32 @func()

+

+!llvm.dbg.cu = !{!0}

+!llvm.module.flags = !{!7, !8, !9}

+!llvm.ident = !{!10}

+

+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 242129)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)

+!1 = !DIFile(filename: "foo.c", directory: "/tmp")

+!2 = !{}

+!3 = !{!4}

+!4 = distinct !DISubprogram(name: "prologue_end_test", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, function: void ()* @prologue_end_test, 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, !"PIC Level", i32 2}

+!10 = !{!"clang version 3.7.0 (trunk 242129)"}

+!11 = !DILocation(line: 3, column: 3, scope: !4)

+!12 = !DILocation(line: 4, column: 3, scope: !4)

+!13 = !DILocation(line: 5, column: 1, scope: !4)

diff --git a/llvm/test/DebugInfo/SystemZ/prologue_end.ll b/llvm/test/DebugInfo/SystemZ/prologue_end.ll
new file mode 100644
index 00000000000..cb71dcff55c
--- /dev/null
+++ b/llvm/test/DebugInfo/SystemZ/prologue_end.ll
@@ -0,0 +1,42 @@
+; RUN: llc -disable-fp-elim -O0 %s -mtriple s390x-linux-gnu -o - | FileCheck %s

+

+; int func(void);

+; void prologue_end_test() {

+;   func();

+;   func();

+; }

+

+define void @prologue_end_test() nounwind uwtable {

+  ; CHECK: prologue_end_test:

+  ; CHECK: .cfi_startproc

+  ; CHECK: aghi

+  ; CHECK: lgr

+  ; CHECK: .loc 1 3 3 prologue_end

+  ; CHECK: brasl {{.*}}, func

+  ; CHECK: brasl {{.*}}, func

+entry:

+  %call = call i32 @func(), !dbg !11

+  %call1 = call i32 @func(), !dbg !12

+  ret void, !dbg !13

+}

+

+declare i32 @func()

+

+!llvm.dbg.cu = !{!0}

+!llvm.module.flags = !{!7, !8, !9}

+!llvm.ident = !{!10}

+

+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 242129)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)

+!1 = !DIFile(filename: "foo.c", directory: "/tmp")

+!2 = !{}

+!3 = !{!4}

+!4 = distinct !DISubprogram(name: "prologue_end_test", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, function: void ()* @prologue_end_test, 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, !"PIC Level", i32 2}

+!10 = !{!"clang version 3.7.0 (trunk 242129)"}

+!11 = !DILocation(line: 3, column: 3, scope: !4)

+!12 = !DILocation(line: 4, column: 3, scope: !4)

+!13 = !DILocation(line: 5, column: 1, scope: !4)