diff options
| author | Saleem Abdulrasool <compnerd@compnerd.org> | 2014-02-23 15:53:41 +0000 |
|---|---|---|
| committer | Saleem Abdulrasool <compnerd@compnerd.org> | 2014-02-23 15:53:41 +0000 |
| commit | 69f706d9e1707fe66259f3e95163c2bfa6c72883 (patch) | |
| tree | 419367e8f790e28469b2cf53a020a5d447ff3b92 | |
| parent | 0922e5b6430a566ed9f6d814902065352126faa5 (diff) | |
| download | llvm-69f706d9e1707fe66259f3e95163c2bfa6c72883.tar.gz llvm-69f706d9e1707fe66259f3e95163c2bfa6c72883.tar.bz2 llvm-69f706d9e1707fe66259f3e95163c2bfa6c72883.tar.xz | |
MCAsmParser: support .ifne
The .ifne directive assembles the following section of code if the argument
expression is non-zero. Effectively, it is equivalent to if.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201986 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/MC/MCParser/AsmParser.cpp | 10 | ||||
| -rw-r--r-- | test/MC/AsmParser/conditional_asm.s | 9 |
2 files changed, 16 insertions, 3 deletions
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp index fb854c918d..aa261c102a 100644 --- a/lib/MC/MCParser/AsmParser.cpp +++ b/lib/MC/MCParser/AsmParser.cpp @@ -350,8 +350,8 @@ private: DK_REFERENCE, DK_WEAK_DEFINITION, DK_WEAK_REFERENCE, DK_WEAK_DEF_CAN_BE_HIDDEN, DK_COMM, DK_COMMON, DK_LCOMM, DK_ABORT, DK_INCLUDE, DK_INCBIN, DK_CODE16, DK_CODE16GCC, DK_REPT, DK_IRP, DK_IRPC, - DK_IF, DK_IFB, DK_IFNB, DK_IFC, DK_IFNC, DK_IFDEF, DK_IFNDEF, DK_IFNOTDEF, - DK_ELSEIF, DK_ELSE, DK_ENDIF, + DK_IF, DK_IFNE, DK_IFB, DK_IFNB, DK_IFC, DK_IFNC, DK_IFDEF, DK_IFNDEF, + DK_IFNOTDEF, DK_ELSEIF, DK_ELSE, DK_ENDIF, DK_SPACE, DK_SKIP, DK_FILE, DK_LINE, DK_LOC, DK_STABS, DK_CFI_SECTIONS, DK_CFI_STARTPROC, DK_CFI_ENDPROC, DK_CFI_DEF_CFA, DK_CFI_DEF_CFA_OFFSET, DK_CFI_ADJUST_CFA_OFFSET, DK_CFI_DEF_CFA_REGISTER, @@ -438,7 +438,8 @@ private: bool parseDirectiveInclude(); // ".include" bool parseDirectiveIncbin(); // ".incbin" - bool parseDirectiveIf(SMLoc DirectiveLoc); // ".if" + // ".if" or ".ifne" + bool parseDirectiveIf(SMLoc DirectiveLoc); // ".ifb" or ".ifnb", depending on ExpectBlank. bool parseDirectiveIfb(SMLoc DirectiveLoc, bool ExpectBlank); // ".ifc" or ".ifnc", depending on ExpectEqual. @@ -1230,6 +1231,7 @@ bool AsmParser::parseStatement(ParseStatementInfo &Info) { default: break; case DK_IF: + case DK_IFNE: return parseDirectiveIf(IDLoc); case DK_IFB: return parseDirectiveIfb(IDLoc, true); @@ -3766,6 +3768,7 @@ bool AsmParser::parseDirectiveIncbin() { /// parseDirectiveIf /// ::= .if expression +/// ::= .ifne expression bool AsmParser::parseDirectiveIf(SMLoc DirectiveLoc) { TheCondStack.push_back(TheCondState); TheCondState.TheCond = AsmCond::IfCond; @@ -4025,6 +4028,7 @@ void AsmParser::initializeDirectiveKindMap() { DirectiveKindMap[".bundle_lock"] = DK_BUNDLE_LOCK; DirectiveKindMap[".bundle_unlock"] = DK_BUNDLE_UNLOCK; DirectiveKindMap[".if"] = DK_IF; + DirectiveKindMap[".ifne"] = DK_IFNE; DirectiveKindMap[".ifb"] = DK_IFB; DirectiveKindMap[".ifnb"] = DK_IFNB; DirectiveKindMap[".ifc"] = DK_IFC; diff --git a/test/MC/AsmParser/conditional_asm.s b/test/MC/AsmParser/conditional_asm.s index f619ef9bb4..b9bee33c6a 100644 --- a/test/MC/AsmParser/conditional_asm.s +++ b/test/MC/AsmParser/conditional_asm.s @@ -10,3 +10,12 @@ .byte 0 .endif .endif + +# CHECK: .byte 1 +# CHECK-NOT: .byte 0 +.ifne 32 - 32 + .byte 0 +.else + .byte 1 +.endif + |