Enable Darwin vararg parameters support in assembler macros.

Duplicate the vararg tests for linux and add a tests which mixed
vararg arguments with darwin positional parameters.

Patch by: Janne Grunau <j@jannau.net>

llvm-svn: 214799

llvm/lib/MC/MCParser/AsmParser.cpp

@@ -3302,7 +3302,7 @@ bool AsmParser::parseDirectiveMacro(SMLoc DirectiveLoc) {
 
       if (Qualifier == "req")
         Parameter.Required = true;
-      else if (Qualifier == "vararg" && !IsDarwin)
+      else if (Qualifier == "vararg")
         Parameter.Vararg = true;
       else
         return Error(QualLoc, Qualifier + " is not a valid parameter qualifier "

llvm/test/MC/AsmParser/macros-darwin-vararg.s

@@ -1,8 +1,90 @@
-// RUN: not llvm-mc -triple i386-apple-darwin10 %s 2>&1 | FileCheck %s
+// RUN: llvm-mc -triple i386-apple-darwin10 %s 2>&1 | FileCheck %s
 
-// CHECK: error: vararg is not a valid parameter qualifier for 'arg' in macro 'abc'
-// CHECK: .macro abc arg:vararg
-
-.macro abc arg:vararg
-    \arg
+.macro abc a b:vararg
+.globl "\a, \b"
 .endm
+
+// CHECK: .globl "zed0, zed1, zed2"
+abc zed0, zed1, zed2
+
+.purgem abc
+
+.macro ifcc arg:vararg
+.if cc
+            \arg
+.endif
+.endm
+
+.macro ifcc2 arg0 arg1:vararg
+.if cc
+            movl \arg0, \arg1
+.endif
+.endm
+
+.macro ifcc3 arg0, arg1:vararg
+.if cc
+            movl \arg0, \arg1
+.endif
+.endm
+
+.macro ifcc4 arg0, arg1:vararg
+.if cc
+            movl \arg1, \arg0
+.endif
+.endm
+
+.text
+
+// CHECK: movl %esp, %ebp
+// CHECK: subl $0, %esp
+// CHECK: movl %eax, %ebx
+// CHECK: movl %ecx, %ebx
+// CHECK: movl %ecx, %eax
+// CHECK: movl %eax, %ecx
+// CHECK: movl %ecx, %eax
+// CHECK: movl %eax, %ecx
+.set cc,1
+  ifcc  movl    %esp, %ebp
+        subl $0, %esp
+
+  ifcc2 %eax, %ebx
+  ifcc2 %ecx, %ebx
+  ifcc3 %ecx, %eax
+  ifcc3 %eax, %ecx
+  ifcc4 %eax, %ecx  ## test
+  ifcc4 %ecx, %eax ## test
+
+// CHECK-NOT movl
+// CHECK: subl $1, %esp
+.set cc,0
+  ifcc  movl,    %esp, %ebp
+        subl $1, %esp
+
+.macro abc arg:vararg=nop
+  \arg
+.endm
+
+.macro abcd arg0=%eax, arg1:vararg=%ebx
+  movl \arg0, \arg1
+.endm
+
+.text
+
+// CHECK: nop
+  abc
+// CHECK: movl %eax, %ebx
+  abcd ,
+
+.macro .make_macro start, end, name, body:vararg
+\start \name
+\body
+\end
+.endmacro
+
+.make_macro .macro,.endmacro,.mybyte,.byte $0, $2, $1
+
+.data
+// CHECK: .byte 10
+// CHECK: .byte 12
+// CHECK: .byte 11
+.mybyte 10,11,12