[X86] Add -m[no-]x87 and -m[no-]80387 options to control FeatureX87.

Add -m[no-]x87 and -m[no-]80387 options to control FeatureX87.
-m[no-]80387 options is added for compatibility with GCC.

Differential Revision: http://reviews.llvm.org/D19658


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@268489 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Driver/Options.td

@@ -1370,6 +1370,8 @@ def mno_relax_all : Flag<["-"], "mno-relax-all">, Group<m_Group>;
 def mno_rtd: Flag<["-"], "mno-rtd">, Group<m_Group>;
 def mno_soft_float : Flag<["-"], "mno-soft-float">, Group<m_Group>;
 def mno_stackrealign : Flag<["-"], "mno-stackrealign">, Group<m_Group>;
+def mno_x87 : Flag<["-"], "mno-x87">, Group<m_x86_Features_Group>;
+def mno_80387 : Flag<["-"], "mno-80387">, Alias<mno_x87>;
 def mno_sse2 : Flag<["-"], "mno-sse2">, Group<m_x86_Features_Group>;
 def mno_sse3 : Flag<["-"], "mno-sse3">, Group<m_x86_Features_Group>;
 def mno_sse4a : Flag<["-"], "mno-sse4a">, Group<m_x86_Features_Group>;
@@ -1547,6 +1549,8 @@ def mno_implicit_float : Flag<["-"], "mno-implicit-float">, Group<m_Group>,
 def mimplicit_float : Flag<["-"], "mimplicit-float">, Group<m_Group>;
 def mrecip : Flag<["-"], "mrecip">, Group<m_Group>;
 def mrecip_EQ : CommaJoined<["-"], "mrecip=">, Group<m_Group>, Flags<[CC1Option]>;
+def mx87 : Flag<["-"], "mx87">, Group<m_x86_Features_Group>;
+def m80387 : Flag<["-"], "m80387">, Alias<mx87>;
 def msse2 : Flag<["-"], "msse2">, Group<m_x86_Features_Group>;
 def msse3 : Flag<["-"], "msse3">, Group<m_x86_Features_Group>;
 def msse4a : Flag<["-"], "msse4a">, Group<m_x86_Features_Group>;

test/Driver/x86-target-features.c

+// RUN: %clang -target i386-unknown-linux-gnu -march=i386 -mx87 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=X87 %s
+// RUN: %clang -target i386-unknown-linux-gnu -march=i386 -mno-x87 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=NO-X87 %s
+// RUN: %clang -target i386-unknown-linux-gnu -march=i386 -m80387 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=X87 %s
+// RUN: %clang -target i386-unknown-linux-gnu -march=i386 -mno-80387 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=NO-X87 %s
+// X87: "-target-feature" "+x87"
+// NO-X87: "-target-feature" "-x87"
+
 // RUN: %clang -target i386-unknown-linux-gnu -march=i386 -mmmx -m3dnow -m3dnowa %s -### -o %t.o 2>&1 | FileCheck -check-prefix=MMX %s
 // RUN: %clang -target i386-unknown-linux-gnu -march=i386 -mno-mmx -mno-3dnow -mno-3dnowa %s -### -o %t.o 2>&1 | FileCheck -check-prefix=NO-MMX %s
 // MMX: "-target-feature" "+mmx" "-target-feature" "+3dnow" "-target-feature" "+3dnowa"