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[AIX] Print printable byte list as quoted string

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.byte supports string, so if the whole byte list are printable,
we can actually print the string for readability and LIT tests maintainence.

        .byte 'H,'e,'l,'l,'o,',,' ,'w,'o,'r,'l,'d
->
        .byte "Hello, world"

Reviewed By: hubert.reinterpretcast

Differential Revision: https://reviews.llvm.org/D102814
This commit is contained in:
Jinsong Ji 2021-05-21 02:14:13 +00:00
parent 5d6415281f
commit 068fb4deaa
13 changed files with 78 additions and 46 deletions
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6
include/llvm/MC/MCAsmInfo.h
View File

@ -265,6 +265,11 @@ protected:
/// null. Defaults to null.
const char *ByteListDirective = nullptr;
/// This directive allows emission of a zero-terminated ascii string without
/// the standard C escape characters embedded into it. If a target doesn't
/// support this, it can be set to null. Defaults to null.
const char *PlainStringDirective = nullptr;
/// Form used for character literals in the assembly syntax. Useful for
/// producing strings as byte lists. If a target does not use or support
/// this, it shall be set to ACLS_Unknown. Defaults to ACLS_Unknown.
@ -686,6 +691,7 @@ public:
const char *getAsciiDirective() const { return AsciiDirective; }
const char *getAscizDirective() const { return AscizDirective; }
const char *getByteListDirective() const { return ByteListDirective; }
const char *getPlainStringDirective() const { return PlainStringDirective; }
AsmCharLiteralSyntax characterLiteralSyntax() const {
return CharacterLiteralSyntax;
}

1
lib/MC/MCAsmInfoXCOFF.cpp
View File

@ -40,6 +40,7 @@ MCAsmInfoXCOFF::MCAsmInfoXCOFF() {
AsciiDirective = nullptr; // not supported
AscizDirective = nullptr; // not supported
ByteListDirective = "\t.byte\t";
PlainStringDirective = "\t.string\t";
CharacterLiteralSyntax = ACLS_SingleQuotePrefix;
// Use .vbyte for data definition to avoid directives that apply an implicit

25
lib/MC/MCAsmStreamer.cpp
View File

@ -1003,6 +1003,15 @@ void MCAsmStreamer::emitTBSSSymbol(MCSection *Section, MCSymbol *Symbol,
EmitEOL();
}
static inline bool isPrintableString(StringRef Data) {
const auto BeginPtr = Data.begin(), EndPtr = Data.end();
for (const unsigned char C : make_range(BeginPtr, EndPtr - 1)) {
if (!isPrint(C))
return false;
}
return isPrint(Data.back()) || Data.back() == 0;
}
static inline char toOctal(int X) { return (X&7)+'0'; }
static void PrintByteList(StringRef Data, raw_ostream &OS,
@ -1112,6 +1121,22 @@ void MCAsmStreamer::emitBytes(StringRef Data) {
Data = Data.substr(0, Data.size() - 1);
} else if (LLVM_LIKELY(MAI->getAsciiDirective())) {
OS << MAI->getAsciiDirective();
} else if (MAI->hasPairedDoubleQuoteStringConstants() &&
isPrintableString(Data)) {
// For target with DoubleQuoteString constants, .string and .byte are used
// as replacement of .asciz and .ascii.
assert(MAI->getPlainStringDirective() &&
"hasPairedDoubleQuoteStringConstants target must support "
"PlainString Directive");
assert(MAI->getByteListDirective() &&
"hasPairedDoubleQuoteStringConstants target must support ByteList "
"Directive");
if (Data.back() == 0) {
OS << MAI->getPlainStringDirective();
Data = Data.substr(0, Data.size() - 1);
} else {
OS << MAI->getByteListDirective();
}
} else if (MAI->getByteListDirective()) {
OS << MAI->getByteListDirective();
PrintByteList(Data, OS, MAI->characterLiteralSyntax());

2
test/CodeGen/PowerPC/aix-emit-tracebacktable-clobber-register.ll
View File

@ -43,6 +43,6 @@ entry:
; CHECK-ASM-NEXT: .vbyte 4, L..bar0-.bar # Function size
; CHECK-FUNC-NEXT: .vbyte 4, L..bar0-.bar[PR] # Function size
; COMMON-NEXT: .vbyte 2, 0x0003 # Function name len = 3
; COMMON-NEXT: .byte 'b,'a,'r # Function Name
; COMMON-NEXT: .byte "bar" # Function Name
; COMMON-NEXT: .byte 0x1f # AllocaUsed
; COMMON-NEXT: # -- End function

6
test/CodeGen/PowerPC/aix-emit-tracebacktable.ll
View File

@ -162,7 +162,7 @@ entry:
; CHECK-ASM-NEXT: .vbyte 4, L.._Z10add_structifd1SP2SD1Di0-._Z10add_structifd1SP2SD1Di # Function size
; CHECK-FUNC-NEXT: .vbyte 4, L.._Z10add_structifd1SP2SD1Di0-._Z10add_structifd1SP2SD1Di[PR] # Function size
; COMMON-NEXT: .vbyte 2, 0x001a # Function name len = 26
; COMMON-NEXT: .byte '_,'Z,'1,'0,'a,'d,'d,'_,'s,'t,'r,'u,'c,'t,'i,'f,'d,'1,'S,'P,'2,'S,'D,'1,'D,'i # Function Name
; COMMON-NEXT: .byte "_Z10add_structifd1SP2SD1Di" # Function Name
; COMMON-NEXT: # -- End function
@ -190,7 +190,7 @@ entry:
; CHECK-ASM-NEXT: .vbyte 4, L..main0-.main # Function size
; CHECK-FUNC-NEXT: .vbyte 4, L..main0-.main[PR] # Function size
; COMMON-NEXT: .vbyte 2, 0x0004 # Function name len = 4
; COMMON-NEXT: .byte 'm,'a,'i,'n # Function Name
; COMMON-NEXT: .byte "main" # Function Name
; COMMON-NEXT: # -- End function
@ -214,5 +214,5 @@ entry:
; CHECK-ASM-NEXT: .vbyte 4, L.._Z7add_bari1SfdP2SD1Di0-._Z7add_bari1SfdP2SD1Di # Function size
; CHECK-FUNC-NEXT: .vbyte 4, L.._Z7add_bari1SfdP2SD1Di0-._Z7add_bari1SfdP2SD1Di[PR] # Function size
; COMMON-NEXT: .vbyte 2, 0x0016 # Function name len = 22
; COMMON-NEXT: .byte '_,'Z,'7,'a,'d,'d,'_,'b,'a,'r,'i,'1,'S,'f,'d,'P,'2,'S,'D,'1,'D,'i # Function Name
; COMMON-NEXT: .byte "_Z7add_bari1SfdP2SD1Di" # Function Name
; COMMON-NEXT: # -- End function

2
test/CodeGen/PowerPC/aix-exception.ll
View File

@ -116,7 +116,7 @@ eh.resume: ; preds = %catch.dispatch
; ASM: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; ASM: .vbyte 4, L.._Z9catchFuncv0-._Z9catchFuncv # Function size
; ASM: .vbyte 2, 0x000d # Function name len = 13
; ASM: .byte '_,'Z,'9,'c,'a,'t,'c,'h,'F,'u,'n,'c,'v # Function Name
; ASM: .byte "_Z9catchFuncv" # Function Name
; ASM: .byte 0x08 # ExtensionTableFlag = TB_EH_INFO
; ASM: .align 2
; ASM32: .vbyte 4, L..C1-TOC[TC0] # EHInfo Table

2
test/CodeGen/PowerPC/aix-xcoff-data-sections.ll
View File

@ -71,7 +71,7 @@ entry:
; CHECK-NEXT: .comm a[RW],4,2
; CHECK-NEXT: .comm f[RW],4,2
; CHECK-NEXT: .csect .rodata.str1.1L...str[RO],2
; CHECK-NEXT: .byte 'a,'b,'c,'d,'e,'f,'g,'h,0000
; CHECK-NEXT: .string "abcdefgh"
; CHECK32: .csect p[RW],2
; CHECK32-NEXT: .globl p[RW]
; CHECK32-NEXT: .align 2

2
test/CodeGen/PowerPC/aix-xcoff-data.ll
View File

@ -86,7 +86,7 @@
; CHECK: .globl chrarray
; CHECK-NEXT: chrarray:
; CHECK-NEXT: .byte 'a,'b,'c,'d
; CHECK-NEXT: .byte "abcd"
; CHECK: .globl dblarr
; CHECK-NEXT: .align 3

2
test/CodeGen/PowerPC/aix-xcoff-mergeable-str.ll
View File

@ -44,7 +44,7 @@ entry:
; CHECK-NEXT: L..strA:
; CHECK-NEXT: .byte 'h,'e,'l,'l,'o,' ,'w,'o,'r,'l,'d,'!,0012,0000
; CHECK-NEXT: L...str:
; CHECK-NEXT: .byte 'a,'b,'c,'d,'e,'f,'g,'h,0000
; CHECK-NEXT: .string "abcdefgh"
; CHECKOBJ: 00000010 <.rodata.str2.2>:
; CHECKOBJ-NEXT: 10: 01 08 01 10

2
test/CodeGen/PowerPC/aix-xcoff-rodata.ll
View File

@ -55,7 +55,7 @@
; CHECK64-NEXT: .vbyte 8, 0x408c200000000000
; CHECK-NEXT: .globl const_chrarray
; CHECK-NEXT: const_chrarray:
; CHECK-NEXT: .byte 'a,'b,'c,'d
; CHECK-NEXT: .byte "abcd"
; CHECK-NEXT: .globl const_dblarr
; CHECK-NEXT: .align 3
; CHECK-NEXT: const_dblarr:

34
test/DebugInfo/XCOFF/empty.ll
View File

@ -71,7 +71,7 @@ entry:
; ASM32-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; ASM32-NEXT: .vbyte 4, L..main0-.main # Function size
; ASM32-NEXT: .vbyte 2, 0x0004 # Function name len = 4
; ASM32-NEXT: .byte 'm,'a,'i,'n # Function Name
; ASM32-NEXT: .byte "main" # Function Name
; ASM32-NEXT: L..func_end0:
; ASM32-NEXT: # -- End function
; ASM32-NEXT: L..sec_end0:
@ -165,15 +165,15 @@ entry:
; ASM32: .dwsect 0x70000
; ASM32-NEXT: L...dwstr:
; ASM32-NEXT: L..info_string0:
; ASM32-NEXT: .byte 'c,'l,'a,'n,'g,' ,'v,'e,'r,'s,'i,'o,'n,' ,'1,'2,'.,'0,'.,'0,0000 # string offset=0
; ASM32-NEXT: .string "clang version 12.0.0" # string offset=0
; ASM32-NEXT: L..info_string1:
; ASM32-NEXT: .byte '1,'.,'c,0000 # string offset=21
; ASM32-NEXT: .string "1.c" # string offset=21
; ASM32-NEXT: L..info_string2:
; ASM32-NEXT: .byte 'd,'e,'b,'u,'g,0000 # string offset=25
; ASM32-NEXT: .string "debug" # string offset=25
; ASM32-NEXT: L..info_string3:
; ASM32-NEXT: .byte 'm,'a,'i,'n,0000 # string offset=31
; ASM32-NEXT: .string "main" # string offset=31
; ASM32-NEXT: L..info_string4:
; ASM32-NEXT: .byte 'i,'n,'t,0000 # string offset=36
; ASM32-NEXT: .string "int" # string offset=36
; ASM32-NEXT: .toc
; ASM32: .dwsect 0x20000
; ASM32-NEXT: L...dwline:
@ -200,10 +200,10 @@ entry:
; ASM32-NEXT: .byte 0
; ASM32-NEXT: .byte 0
; ASM32-NEXT: .byte 1
; ASM32-NEXT: .byte 'd,'e,'b,'u,'g
; ASM32-NEXT: .byte "debug"
; ASM32-NEXT: .byte 0
; ASM32-NEXT: .byte 0
; ASM32-NEXT: .byte '1,'.,'c
; ASM32-NEXT: .byte "1.c"
; ASM32-NEXT: .byte 0
; ASM32-NEXT: .byte 1
; ASM32-NEXT: .byte 0
@ -272,7 +272,7 @@ entry:
; ASM64-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; ASM64-NEXT: .vbyte 4, L..main0-.main # Function size
; ASM64-NEXT: .vbyte 2, 0x0004 # Function name len = 4
; ASM64-NEXT: .byte 'm,'a,'i,'n # Function Name
; ASM64-NEXT: .byte "main" # Function Name
; ASM64-NEXT: L..func_end0:
; ASM64-NEXT: # -- End function
; ASM64-NEXT: L..sec_end0:
@ -366,16 +366,16 @@ entry:
; ASM64: .dwsect 0x70000
; ASM64-NEXT: L...dwstr:
; ASM64-NEXT: L..info_string0:
; ASM64-NEXT: .byte 'c,'l,'a,'n,'g,' ,'v,'e,'r,'s,'i,'o,'n,' ,'1,'2,'.,'0,'.,'0,0000 # string offset=0
; ASM64-NEXT: .string "clang version 12.0.0" # string offset=0
; ASM64-NEXT: L..info_string1:
; ASM64-NEXT: .byte '1,'.,'c,0000 # string offset=21
; ASM64-NEXT: .string "1.c" # string offset=21
; ASM64-NEXT: L..info_string2:
; ASM64-NEXT: .byte 'd,'e,'b,'u,'g,0000 # string offset=25
; ASM64-NEXT: .string "debug" # string offset=25
; ASM64-NEXT: L..info_string3:
; ASM64-NEXT: .byte 'm,'a,'i,'n,0000 # string offset=31
; ASM64-NEXT: .string "main" # string offset=31
; ASM64-NEXT: L..info_string4:
; ASM64-NEXT: .byte 'i,'n,'t,0000 # string offset=36
; ASM64-NEXT: .toc
; ASM64-NEXT: .string "int" # string offset=36
; ASM64-NEXT: .toc
; ASM64: .dwsect 0x20000
; ASM64-NEXT: L...dwline:
; ASM64-NEXT: L..debug_line_0:
@ -401,10 +401,10 @@ entry:
; ASM64-NEXT: .byte 0
; ASM64-NEXT: .byte 0
; ASM64-NEXT: .byte 1
; ASM64-NEXT: .byte 'd,'e,'b,'u,'g
; ASM64-NEXT: .byte "debug"
; ASM64-NEXT: .byte 0
; ASM64-NEXT: .byte 0
; ASM64-NEXT: .byte '1,'.,'c
; ASM64-NEXT: .byte "1.c"
; ASM64-NEXT: .byte 0
; ASM64-NEXT: .byte 1
; ASM64-NEXT: .byte 0

20
test/DebugInfo/XCOFF/explicit-section.ll
View File

@ -77,7 +77,7 @@ entry:
; CHECK-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; CHECK-NEXT: .vbyte 4, L..bar0-.bar # Function size
; CHECK-NEXT: .vbyte 2, 0x0003 # Function name len = 3
; CHECK-NEXT: .byte 'b,'a,'r # Function Name
; CHECK-NEXT: .byte "bar" # Function Name
; CHECK-NEXT: L..func_end0:
; CHECK-NEXT: # -- End function
; CHECK-NEXT: .csect explicit_main_sec[PR],2
@ -125,7 +125,7 @@ entry:
; CHECK-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; CHECK-NEXT: .vbyte 4, L..main0-.main # Function size
; CHECK-NEXT: .vbyte 2, 0x0004 # Function name len = 4
; CHECK-NEXT: .byte 'm,'a,'i,'n # Function Name
; CHECK-NEXT: .byte "main" # Function Name
; CHECK-NEXT: L..func_end1:
; CHECK-NEXT: # -- End function
; CHECK-NEXT: L..sec_end0:
@ -235,17 +235,17 @@ entry:
; CHECK: .dwsect 0x70000
; CHECK-NEXT: L...dwstr:
; CHECK-NEXT: L..info_string0:
; CHECK-NEXT: .byte 'c,'l,'a,'n,'g,' ,'v,'e,'r,'s,'i,'o,'n,' ,'1,'3,'.,'0,'.,'0,0000 # string offset=0
; CHECK-NEXT: .string "clang version 13.0.0" # string offset=0
; CHECK-NEXT: L..info_string1:
; CHECK-NEXT: .byte '2,'.,'c,0000 # string offset=21
; CHECK-NEXT: .string "2.c" # string offset=21
; CHECK-NEXT: L..info_string2:
; CHECK-NEXT: .byte 'd,'e,'b,'u,'g,0000 # string offset=25
; CHECK-NEXT: .string "debug" # string offset=25
; CHECK-NEXT: L..info_string3:
; CHECK-NEXT: .byte 'b,'a,'r,0000 # string offset=31
; CHECK-NEXT: .string "bar" # string offset=31
; CHECK-NEXT: L..info_string4:
; CHECK-NEXT: .byte 'i,'n,'t,0000 # string offset=35
; CHECK-NEXT: .string "int" # string offset=35
; CHECK-NEXT: L..info_string5:
; CHECK-NEXT: .byte 'm,'a,'i,'n,0000 # string offset=39
; CHECK-NEXT: .string "main" # string offset=39
; CHECK-NEXT: .toc
; CHECK: .dwsect 0x20000
; CHECK-NEXT: L...dwline:
@ -271,10 +271,10 @@ entry:
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 'd,'e,'b,'u,'g
; CHECK-NEXT: .byte "debug"
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte '2,'.,'c
; CHECK-NEXT: .byte "2.c"
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0

20
test/DebugInfo/XCOFF/function-sections.ll
View File

@ -72,7 +72,7 @@ entry:
; CHECK-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; CHECK-NEXT: .vbyte 4, L..foo0-.foo[PR] # Function size
; CHECK-NEXT: .vbyte 2, 0x0003 # Function name len = 3
; CHECK-NEXT: .byte 'f,'o,'o # Function Name
; CHECK-NEXT: .byte "foo" # Function Name
; CHECK-NEXT: L..func_end0:
; CHECK-NEXT: # -- End function
; CHECK-NEXT: .csect .bar[PR],2
@ -108,7 +108,7 @@ entry:
; CHECK-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; CHECK-NEXT: .vbyte 4, L..bar0-.bar[PR] # Function size
; CHECK-NEXT: .vbyte 2, 0x0003 # Function name len = 3
; CHECK-NEXT: .byte 'b,'a,'r # Function Name
; CHECK-NEXT: .byte "bar" # Function Name
; CHECK-NEXT: L..func_end1:
; CHECK-NEXT: # -- End function
; CHECK-NEXT: L..sec_end0:
@ -222,17 +222,17 @@ entry:
; CHECK: .dwsect 0x70000
; CHECK-NEXT: L...dwstr:
; CHECK-NEXT: L..info_string0:
; CHECK-NEXT: .byte 'c,'l,'a,'n,'g,' ,'v,'e,'r,'s,'i,'o,'n,' ,'1,'3,'.,'0,'.,'0,0000 # string offset=0
; CHECK-NEXT: .string "clang version 13.0.0" # string offset=0
; CHECK-NEXT: L..info_string1:
; CHECK-NEXT: .byte '1,'.,'c,0000 # string offset=21
; CHECK-NEXT: .string "1.c" # string offset=21
; CHECK-NEXT: L..info_string2:
; CHECK-NEXT: .byte 'd,'e,'b,'u,'g,0000 # string offset=25
; CHECK-NEXT: .string "debug" # string offset=25
; CHECK-NEXT: L..info_string3:
; CHECK-NEXT: .byte 'f,'o,'o,0000 # string offset=31
; CHECK-NEXT: .string "foo" # string offset=31
; CHECK-NEXT: L..info_string4:
; CHECK-NEXT: .byte 'i,'n,'t,0000 # string offset=35
; CHECK-NEXT: .string "int" # string offset=35
; CHECK-NEXT: L..info_string5:
; CHECK-NEXT: .byte 'b,'a,'r,0000 # string offset=39
; CHECK-NEXT: .string "bar" # string offset=39
; CHECK-NEXT: .toc
; CHECK: .dwsect 0x20000
; CHECK-NEXT: L...dwline:
@ -258,10 +258,10 @@ entry:
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 'd,'e,'b,'u,'g
; CHECK-NEXT: .byte "debug"
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte '1,'.,'c
; CHECK-NEXT: .byte "1.c"
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0