[PATCH] [clang-cl] Ignore the /o option when /P is specified.

[Greg Bedwell]

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D10313

Files:
  cfe/trunk/lib/Driver/Driver.cpp
  cfe/trunk/test/Driver/cl-outputs.c

Index: cfe/trunk/test/Driver/cl-outputs.c
===================================================================
--- cfe/trunk/test/Driver/cl-outputs.c
+++ cfe/trunk/test/Driver/cl-outputs.c
@@ -249,30 +249,23 @@
 // Fi2: "-E"
 // Fi2: "-o" "foo.x"
 
+// To match MSVC behavior /o should be ignored for /P output.
+
 // RUN: %clang_cl /P /ofoo -### -- %s 2>&1 | FileCheck -check-prefix=Fio1 %s
 // Fio1: "-E"
-// Fio1: "-o" "foo.i"
+// Fio1: "-o" "cl-outputs.i"
 
-// RUN: %clang_cl /P /o foo -### -- %s 2>&1 | FileCheck -check-prefix=Fio2 %s
+// RUN: %clang_cl /P /o foo.x -### -- %s 2>&1 | FileCheck -check-prefix=Fio2 %s
 // Fio2: "-E"
-// Fio2: "-o" "foo.i"
-
-// RUN: %clang_cl /P /ofoo.x -### -- %s 2>&1 | FileCheck -check-prefix=Fio3 %s
-// Fio3: "-E"
-// Fio3: "-o" "foo.x"
-
-// RUN: %clang_cl /P /o foo.x -### -- %s 2>&1 | FileCheck -check-prefix=Fio4 %s
-// Fio4: "-E"
-// Fio4: "-o" "foo.x"
-
+// Fio2: "-o" "cl-outputs.i"
 
 // RUN: %clang_cl /P /obar.x /Fifoo.x -### -- %s 2>&1 | FileCheck -check-prefix=FioRACE1 %s
 // FioRACE1: "-E"
 // FioRACE1: "-o" "foo.x"
 
 // RUN: %clang_cl /P /Fifoo.x /obar.x -### -- %s 2>&1 | FileCheck -check-prefix=FioRACE2 %s
 // FioRACE2: "-E"
-// FioRACE2: "-o" "bar.x"
+// FioRACE2: "-o" "foo.x"
 
 // RUN: %clang_cl /c /GL -### -- %s 2>&1 | FileCheck -check-prefix=LTO-DEFAULT %s
 // LTO-DEFAULT: "-emit-llvm-bc"{{.*}}"-o" "cl-outputs.obj"
Index: cfe/trunk/lib/Driver/Driver.cpp
===================================================================
--- cfe/trunk/lib/Driver/Driver.cpp
+++ cfe/trunk/lib/Driver/Driver.cpp
@@ -1692,8 +1692,7 @@
     assert(AtTopLevel && isa<PreprocessJobAction>(JA));
     StringRef BaseName = llvm::sys::path::filename(BaseInput);
     StringRef NameArg;
-    if (Arg *A = C.getArgs().getLastArg(options::OPT__SLASH_Fi,
-                                        options::OPT__SLASH_o))
+    if (Arg *A = C.getArgs().getLastArg(options::OPT__SLASH_Fi))
       NameArg = A->getValue();
     return C.addResultFile(MakeCLOutputFilename(C.getArgs(), NameArg, BaseName,
                                                 types::TY_PP_C), &JA);

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