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c1be4794ba
llvm-mirror/test/DebugInfo/COFF/multifunction.ll
Duncan P. N. Exon Smith c1be4794ba Revert "Revert "DI: Fold constant arguments into a single MDString"" 
This reverts commit r218918, effectively reapplying r218914 after fixing
an Ocaml bindings test and an Asan crash.  The root cause of the latter
was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a
PR to investigate who requires the loose check (and why).

Original commit message follows.

--

This patch addresses the first stage of PR17891 by folding constant
arguments together into a single MDString.  Integers are stringified and
a `\0` character is used as a separator.

Part of PR17891.

Note: I've attached my testcases upgrade scripts to the PR.  If I've
just broken your out-of-tree testcases, they might help.

llvm-svn: 219010
2014-10-03 20:01:09 +00:00

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; RUN: llc -mcpu=core2 -mtriple=i686-pc-win32 -O0 < %s | FileCheck --check-prefix=X86 %s
; RUN: llc -mcpu=core2 -mtriple=i686-pc-win32 -o - -O0 < %s | llvm-mc -triple=i686-pc-win32 -filetype=obj | llvm-readobj -s -sr -codeview-linetables | FileCheck --check-prefix=OBJ32 %s
; RUN: llc -mcpu=core2 -mtriple=x86_64-pc-win32 -O0 < %s | FileCheck --check-prefix=X64 %s
; RUN: llc -mcpu=core2 -mtriple=x86_64-pc-win32 -o - -O0 < %s | llvm-mc -triple=x86_64-pc-win32 -filetype=obj | llvm-readobj -s -sr -codeview-linetables | FileCheck --check-prefix=OBJ64 %s
; This LL file was generated by running clang on the following code:
; D:\source.c:
; 1 void z(void);
; 2
; 3 void x(void) {
; 4 z();
; 5 }
; 6
; 7 void y(void) {
; 8 z();
; 9 }
; 10
; 11 void f(void) {
; 12 x();
; 13 y();
; 14 z();
; 15 }
; X86-LABEL: _x:
; X86-NEXT: # BB
; X86-NEXT: [[X_CALL:.*]]:{{$}}
; X86-NEXT: calll _z
; X86-NEXT: [[X_RETURN:.*]]:
; X86-NEXT: ret
; X86-NEXT: [[END_OF_X:.*]]:
;
; X86-LABEL: _y:
; X86-NEXT: # BB
; X86-NEXT: [[Y_CALL:.*]]:{{$}}
; X86-NEXT: calll _z
; X86-NEXT: [[Y_RETURN:.*]]:
; X86-NEXT: ret
; X86-NEXT: [[END_OF_Y:.*]]:
;
; X86-LABEL: _f:
; X86-NEXT: # BB
; X86-NEXT: [[F_CALLS_X:.*]]:{{$}}
; X86-NEXT: calll _x
; X86-NEXT: [[F_CALLS_Y:.*]]:
; X86-NEXT: calll _y
; X86-NEXT: [[F_CALLS_Z:.*]]:
; X86-NEXT: calll _z
; X86-NEXT: [[F_RETURN:.*]]:
; X86-NEXT: ret
; X86-NEXT: [[END_OF_F:.*]]:
;
; X86-LABEL: .section .debug$S,"rd"
; X86-NEXT: .long 4
; Line table subsection for x
; X86-NEXT: .long 242
; X86-NEXT: .long [[F2_END:.*]]-[[F2_START:.*]]
; X86-NEXT: [[F2_START]]:
; X86-NEXT: .secrel32 _x
; X86-NEXT: .secidx _x
; X86-NEXT: .long [[END_OF_X]]-_x
; X86-NEXT: [[FILE_SEGMENT_START:[^:]*]]:
; X86-NEXT: .long 0
; X86-NEXT: .long 2
; X86-NEXT: .long [[FILE_SEGMENT_END:.*]]-[[FILE_SEGMENT_START]]
; X86-NEXT: .long [[X_CALL]]-_x
; X86-NEXT: .long 4
; X86-NEXT: .long [[X_RETURN]]-_x
; X86-NEXT: .long 5
; X86-NEXT: [[FILE_SEGMENT_END]]:
; X86-NEXT: [[F2_END]]:
; Line table subsection for y
; X86-NEXT: .long 242
; X86-NEXT: .long [[F2_END:.*]]-[[F2_START:.*]]
; X86-NEXT: [[F2_START]]:
; X86-NEXT: .secrel32 _y
; X86-NEXT: .secidx _y
; X86-NEXT: .long [[END_OF_Y]]-_y
; X86-NEXT: [[FILE_SEGMENT_START:[^:]*]]:
; X86-NEXT: .long 0
; X86-NEXT: .long 2
; X86-NEXT: .long [[FILE_SEGMENT_END:.*]]-[[FILE_SEGMENT_START]]
; X86-NEXT: .long [[Y_CALL]]-_y
; X86-NEXT: .long 8
; X86-NEXT: .long [[Y_RETURN]]-_y
; X86-NEXT: .long 9
; X86-NEXT: [[FILE_SEGMENT_END]]:
; X86-NEXT: [[F2_END]]:
; Line table subsection for f
; X86-NEXT: .long 242
; X86-NEXT: .long [[F2_END:.*]]-[[F2_START:.*]]
; X86-NEXT: [[F2_START]]:
; X86-NEXT: .secrel32 _f
; X86-NEXT: .secidx _f
; X86-NEXT: .long [[END_OF_F]]-_f
; X86-NEXT: [[FILE_SEGMENT_START:[^:]*]]:
; X86-NEXT: .long 0
; X86-NEXT: .long 4
; X86-NEXT: .long [[FILE_SEGMENT_END:.*]]-[[FILE_SEGMENT_START]]
; X86-NEXT: .long [[F_CALLS_X]]-_f
; X86-NEXT: .long 12
; X86-NEXT: .long [[F_CALLS_Y]]-_f
; X86-NEXT: .long 13
; X86-NEXT: .long [[F_CALLS_Z]]-_f
; X86-NEXT: .long 14
; X86-NEXT: .long [[F_RETURN]]-_f
; X86-NEXT: .long 15
; X86-NEXT: [[FILE_SEGMENT_END]]:
; X86-NEXT: [[F2_END]]:
; File index to string table offset subsection
; X86-NEXT: .long 244
; X86-NEXT: .long 8
; X86-NEXT: .long 1
; X86-NEXT: .long 0
; String table
; X86-NEXT: .long 243
; X86-NEXT: .long 13
; X86-NEXT: .byte 0
; X86-NEXT: .ascii "D:\\source.c"
; X86-NEXT: .byte 0
; X86-NEXT: .zero 3
; OBJ32: Section {
; OBJ32: Name: .debug$S (2E 64 65 62 75 67 24 53)
; OBJ32: Characteristics [ (0x42100040)
; OBJ32: ]
; OBJ32: Relocations [
; OBJ32-NEXT: 0xC IMAGE_REL_I386_SECREL _x
; OBJ32-NEXT: 0x10 IMAGE_REL_I386_SECTION _x
; OBJ32-NEXT: 0x3C IMAGE_REL_I386_SECREL _y
; OBJ32-NEXT: 0x40 IMAGE_REL_I386_SECTION _y
; OBJ32-NEXT: 0x6C IMAGE_REL_I386_SECREL _f
; OBJ32-NEXT: 0x70 IMAGE_REL_I386_SECTION _f
; OBJ32-NEXT: ]
; OBJ32: FunctionLineTable [
; OBJ32-NEXT: Name: _x
; OBJ32-NEXT: CodeSize: 0x6
; OBJ32-NEXT: FilenameSegment [
; OBJ32-NEXT: Filename: D:\source.c
; OBJ32-NEXT: +0x0: 4
; OBJ32-NEXT: +0x5: 5
; OBJ32-NEXT: ]
; OBJ32-NEXT: ]
; OBJ32-NEXT: FunctionLineTable [
; OBJ32-NEXT: Name: _y
; OBJ32-NEXT: CodeSize: 0x6
; OBJ32-NEXT: FilenameSegment [
; OBJ32-NEXT: Filename: D:\source.c
; OBJ32-NEXT: +0x0: 8
; OBJ32-NEXT: +0x5: 9
; OBJ32-NEXT: ]
; OBJ32-NEXT: ]
; OBJ32-NEXT: FunctionLineTable [
; OBJ32-NEXT: Name: _f
; OBJ32-NEXT: CodeSize: 0x10
; OBJ32-NEXT: FilenameSegment [
; OBJ32-NEXT: Filename: D:\source.c
; OBJ32-NEXT: +0x0: 12
; OBJ32-NEXT: +0x5: 13
; OBJ32-NEXT: +0xA: 14
; OBJ32-NEXT: +0xF: 15
; OBJ32-NEXT: ]
; OBJ32-NEXT: ]
; OBJ32: }
; X64-LABEL: x:
; X64-NEXT: [[X_START:.*]]:{{$}}
; X64-NEXT: # BB
; X64-NEXT: subq $40, %rsp
; X64-NEXT: [[X_CALL_LINE:.*]]:{{$}}
; X64-NEXT: callq z
; X64-NEXT: [[X_EPILOG_AND_RET:.*]]:
; X64-NEXT: addq $40, %rsp
; X64-NEXT: ret
; X64-NEXT: [[END_OF_X:.*]]:
;
; X64-LABEL: y:
; X64-NEXT: [[Y_START:.*]]:{{$}}
; X64-NEXT: # BB
; X64-NEXT: subq $40, %rsp
; X64-NEXT: [[Y_CALL_LINE:.*]]:{{$}}
; X64-NEXT: callq z
; X64-NEXT: [[Y_EPILOG_AND_RET:.*]]:
; X64-NEXT: addq $40, %rsp
; X64-NEXT: ret
; X64-NEXT: [[END_OF_Y:.*]]:
;
; X64-LABEL: f:
; X64-NEXT: [[F_START:.*]]:{{$}}
; X64-NEXT: # BB
; X64-NEXT: subq $40, %rsp
; X64-NEXT: [[F_CALLS_X:.*]]:{{$}}
; X64-NEXT: callq x
; X64-NEXT: [[F_CALLS_Y:.*]]:
; X64-NEXT: callq y
; X64-NEXT: [[F_CALLS_Z:.*]]:
; X64-NEXT: callq z
; X64-NEXT: [[F_EPILOG_AND_RET:.*]]:
; X64-NEXT: addq $40, %rsp
; X64-NEXT: ret
; X64-NEXT: [[END_OF_F:.*]]:
;
; X64-LABEL: .section .debug$S,"rd"
; X64-NEXT: .long 4
; Line table subsection for x
; X64-NEXT: .long 242
; X64-NEXT: .long [[F2_END:.*]]-[[F2_START:.*]]
; X64-NEXT: [[F2_START]]:
; X64-NEXT: .secrel32 x
; X64-NEXT: .secidx x
; X64-NEXT: .long [[END_OF_X]]-x
; X64-NEXT: [[FILE_SEGMENT_START:[^:]*]]:
; X64-NEXT: .long 0
; X64-NEXT: .long 3
; X64-NEXT: .long [[FILE_SEGMENT_END:.*]]-[[FILE_SEGMENT_START]]
; X64-NEXT: .long [[X_START]]-x
; X64-NEXT: .long 3
; X64-NEXT: .long [[X_CALL_LINE]]-x
; X64-NEXT: .long 4
; X64-NEXT: .long [[X_EPILOG_AND_RET]]-x
; X64-NEXT: .long 5
; X64-NEXT: [[FILE_SEGMENT_END]]:
; X64-NEXT: [[F2_END]]:
; Line table subsection for y
; X64-NEXT: .long 242
; X64-NEXT: .long [[F2_END:.*]]-[[F2_START:.*]]
; X64-NEXT: [[F2_START]]:
; X64-NEXT: .secrel32 y
; X64-NEXT: .secidx y
; X64-NEXT: .long [[END_OF_Y]]-y
; X64-NEXT: [[FILE_SEGMENT_START:[^:]*]]:
; X64-NEXT: .long 0
; X64-NEXT: .long 3
; X64-NEXT: .long [[FILE_SEGMENT_END:.*]]-[[FILE_SEGMENT_START]]
; X64-NEXT: .long [[Y_START]]-y
; X64-NEXT: .long 7
; X64-NEXT: .long [[Y_CALL_LINE]]-y
; X64-NEXT: .long 8
; X64-NEXT: .long [[Y_EPILOG_AND_RET]]-y
; X64-NEXT: .long 9
; X64-NEXT: [[FILE_SEGMENT_END]]:
; X64-NEXT: [[F2_END]]:
; Line table subsection for f
; X64-NEXT: .long 242
; X64-NEXT: .long [[F2_END:.*]]-[[F2_START:.*]]
; X64-NEXT: [[F2_START]]:
; X64-NEXT: .secrel32 f
; X64-NEXT: .secidx f
; X64-NEXT: .long [[END_OF_F]]-f
; X64-NEXT: [[FILE_SEGMENT_START:[^:]*]]:
; X64-NEXT: .long 0
; X64-NEXT: .long 5
; X64-NEXT: .long [[FILE_SEGMENT_END:.*]]-[[FILE_SEGMENT_START]]
; X64-NEXT: .long [[F_START]]-f
; X64-NEXT: .long 11
; X64-NEXT: .long [[F_CALLS_X]]-f
; X64-NEXT: .long 12
; X64-NEXT: .long [[F_CALLS_Y]]-f
; X64-NEXT: .long 13
; X64-NEXT: .long [[F_CALLS_Z]]-f
; X64-NEXT: .long 14
; X64-NEXT: .long [[F_EPILOG_AND_RET]]-f
; X64-NEXT: .long 15
; X64-NEXT: [[FILE_SEGMENT_END]]:
; X64-NEXT: [[F2_END]]:
; File index to string table offset subsection
; X64-NEXT: .long 244
; X64-NEXT: .long 8
; X64-NEXT: .long 1
; X64-NEXT: .long 0
; String table
; X64-NEXT: .long 243
; X64-NEXT: .long 13
; X64-NEXT: .byte 0
; X64-NEXT: .ascii "D:\\source.c"
; X64-NEXT: .byte 0
; X64-NEXT: .zero 3
; OBJ64: Section {
; OBJ64: Name: .debug$S (2E 64 65 62 75 67 24 53)
; OBJ64: Characteristics [ (0x42100040)
; OBJ64: ]
; OBJ64: Relocations [
; OBJ64-NEXT: 0xC IMAGE_REL_AMD64_SECREL x
; OBJ64-NEXT: 0x10 IMAGE_REL_AMD64_SECTION x
; OBJ64-NEXT: 0x44 IMAGE_REL_AMD64_SECREL y
; OBJ64-NEXT: 0x48 IMAGE_REL_AMD64_SECTION y
; OBJ64-NEXT: 0x7C IMAGE_REL_AMD64_SECREL f
; OBJ64-NEXT: 0x80 IMAGE_REL_AMD64_SECTION f
; OBJ64-NEXT: ]
; OBJ64: FunctionLineTable [
; OBJ64-NEXT: Name: x
; OBJ64-NEXT: CodeSize: 0xE
; OBJ64-NEXT: FilenameSegment [
; OBJ64-NEXT: Filename: D:\source.c
; OBJ64-NEXT: +0x0: 3
; OBJ64-NEXT: +0x4: 4
; OBJ64-NEXT: +0x9: 5
; OBJ64-NEXT: ]
; OBJ64-NEXT: ]
; OBJ64-NEXT: FunctionLineTable [
; OBJ64-NEXT: Name: y
; OBJ64-NEXT: CodeSize: 0xE
; OBJ64-NEXT: FilenameSegment [
; OBJ64-NEXT: Filename: D:\source.c
; OBJ64-NEXT: +0x0: 7
; OBJ64-NEXT: +0x4: 8
; OBJ64-NEXT: +0x9: 9
; OBJ64-NEXT: ]
; OBJ64-NEXT: ]
; OBJ64-NEXT: FunctionLineTable [
; OBJ64-NEXT: Name: f
; OBJ64-NEXT: CodeSize: 0x18
; OBJ64-NEXT: FilenameSegment [
; OBJ64-NEXT: Filename: D:\source.c
; OBJ64-NEXT: +0x0: 11
; OBJ64-NEXT: +0x4: 12
; OBJ64-NEXT: +0x9: 13
; OBJ64-NEXT: +0xE: 14
; OBJ64-NEXT: +0x13: 15
; OBJ64-NEXT: ]
; OBJ64-NEXT: ]
; OBJ64: }
; Function Attrs: nounwind
define void @x() #0 {
entry:
call void @z(), !dbg !14
ret void, !dbg !15
}
declare void @z() #1
; Function Attrs: nounwind
define void @y() #0 {
entry:
call void @z(), !dbg !16
ret void, !dbg !17
}
; Function Attrs: nounwind
define void @f() #0 {
entry:
call void @x(), !dbg !18
call void @y(), !dbg !19
call void @z(), !dbg !20
ret void, !dbg !21
}
attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!11, !12}
!llvm.ident = !{!13}
!0 = metadata !{metadata !"0x11\0012\00clang version 3.5 \000\00\000\00\000", metadata !1, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2} ; [ DW_TAG_compile_unit ] [D:\/<unknown>] [DW_LANG_C99]
!1 = metadata !{metadata !"<unknown>", metadata !"D:\5C"}
!2 = metadata !{i32 0}
!3 = metadata !{metadata !4, metadata !9, metadata !10}
!4 = metadata !{metadata !"0x2e\00x\00x\00\003\000\001\000\006\00256\000\003", metadata !5, metadata !6, metadata !7, null, void ()* @x, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 3] [def] [x]
!5 = metadata !{metadata !"source.c", metadata !"D:\5C"}
!6 = metadata !{metadata !"0x29", metadata !5} ; [ DW_TAG_file_type ] [D:\/source.c]
!7 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!8 = metadata !{null}
!9 = metadata !{metadata !"0x2e\00y\00y\00\007\000\001\000\006\00256\000\007", metadata !5, metadata !6, metadata !7, null, void ()* @y, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 7] [def] [y]
!10 = metadata !{metadata !"0x2e\00f\00f\00\0011\000\001\000\006\00256\000\0011", metadata !5, metadata !6, metadata !7, null, void ()* @f, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 11] [def] [f]
!11 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!12 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}
!13 = metadata !{metadata !"clang version 3.5 "}
!14 = metadata !{i32 4, i32 0, metadata !4, null}
!15 = metadata !{i32 5, i32 0, metadata !4, null}
!16 = metadata !{i32 8, i32 0, metadata !9, null}
!17 = metadata !{i32 9, i32 0, metadata !9, null}
!18 = metadata !{i32 12, i32 0, metadata !10, null}
!19 = metadata !{i32 13, i32 0, metadata !10, null}
!20 = metadata !{i32 14, i32 0, metadata !10, null}
!21 = metadata !{i32 15, i32 0, metadata !10, null}
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