[llvm] r201986 - MCAsmParser: support .ifne

[Saleem Abdulrasool]

Author: compnerd
Date: Sun Feb 23 09:53:41 2014
New Revision: 201986

URL: http://llvm.org/viewvc/llvm-project?rev=201986&view=rev
Log:
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.

Modified:
    llvm/trunk/lib/MC/MCParser/AsmParser.cpp
    llvm/trunk/test/MC/AsmParser/conditional_asm.s

Modified: llvm/trunk/lib/MC/MCParser/AsmParser.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MCParser/AsmParser.cpp?rev=201986&r1=201985&r2=201986&view=diff
==============================================================================
--- llvm/trunk/lib/MC/MCParser/AsmParser.cpp (original)
+++ llvm/trunk/lib/MC/MCParser/AsmParser.cpp Sun Feb 23 09:53:41 2014
@@ -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(ParseStat
   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::initializeDirectiveKindM
   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;

Modified: llvm/trunk/test/MC/AsmParser/conditional_asm.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AsmParser/conditional_asm.s?rev=201986&r1=201985&r2=201986&view=diff
==============================================================================
--- llvm/trunk/test/MC/AsmParser/conditional_asm.s (original)
+++ llvm/trunk/test/MC/AsmParser/conditional_asm.s Sun Feb 23 09:53:41 2014
@@ -10,3 +10,12 @@
         .byte 0
     .endif
 .endif
+
+# CHECK: .byte 1
+# CHECK-NOT: .byte 0
+.ifne 32 - 32
+	.byte 0
+.else
+	.byte 1
+.endif
+