r234509 - Added flag to disable isel instruction on PPC target. Using regular branches instead of isel is more efficient in some cases.

[Olivier Sallenave]

Author: ohsallen
Date: Thu Apr  9 12:38:50 2015
New Revision: 234509

URL: http://llvm.org/viewvc/llvm-project?rev=234509&view=rev
Log:
Added flag to disable isel instruction on PPC target. Using regular branches instead of isel is more efficient in some cases.

Modified:
    cfe/trunk/include/clang/Driver/Options.td
    cfe/trunk/test/Driver/ppc-features.cpp

Modified: cfe/trunk/include/clang/Driver/Options.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=234509&r1=234508&r2=234509&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Thu Apr  9 12:38:50 2015
@@ -1274,6 +1274,8 @@ def mfprnd : Flag<["-"], "mfprnd">, Grou
 def mno_fprnd : Flag<["-"], "mno-fprnd">, Group<m_ppc_Features_Group>;
 def mcmpb : Flag<["-"], "mcmpb">, Group<m_ppc_Features_Group>;
 def mno_cmpb : Flag<["-"], "mno-cmpb">, Group<m_ppc_Features_Group>;
+def misel : Flag<["-"], "misel">, Group<m_ppc_Features_Group>;
+def mno_isel : Flag<["-"], "mno-isel">, Group<m_ppc_Features_Group>;
 def mmfcrf : Flag<["-"], "mmfcrf">, Group<m_ppc_Features_Group>;
 def mno_mfcrf : Flag<["-"], "mno-mfcrf">, Group<m_ppc_Features_Group>;
 def mpopcntd : Flag<["-"], "mpopcntd">, Group<m_ppc_Features_Group>;

Modified: cfe/trunk/test/Driver/ppc-features.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/ppc-features.cpp?rev=234509&r1=234508&r2=234509&view=diff
==============================================================================
--- cfe/trunk/test/Driver/ppc-features.cpp (original)
+++ cfe/trunk/test/Driver/ppc-features.cpp Thu Apr  9 12:38:50 2015
@@ -77,6 +77,12 @@
 // RUN: %clang -target powerpc64-unknown-linux-gnu %s -mno-mfcrf -mmfcrf -### -o %t.o 2>&1 | FileCheck -check-prefix=CHECK-MFCRF %s
 // CHECK-MFCRF: "-target-feature" "+mfocrf"
 
+// RUN: %clang -target powerpc64-unknown-linux-gnu %s -mno-isel -### -o %t.o 2>&1 | FileCheck -check-prefix=CHECK-NOISEL %s
+// CHECK-NOISEL: "-target-feature" "-isel"
+
+// RUN: %clang -target powerpc64-unknown-linux-gnu %s -mno-isel -misel -### -o %t.o 2>&1 | FileCheck -check-prefix=CHECK-ISEL %s
+// CHECK-ISEL: "-target-feature" "+isel"
+
 // RUN: %clang -target powerpc64-unknown-linux-gnu %s -mno-popcntd -### -o %t.o 2>&1 | FileCheck -check-prefix=CHECK-NOPOPCNTD %s
 // CHECK-NOPOPCNTD: "-target-feature" "-popcntd"