From: Olivier Sallenave <ohsallen@us.ibm.com>
Date: Thu, 9 Apr 2015 17:38:50 +0000 (+0000)
Subject: Added flag to disable isel instruction on PPC target. Using regular branches instead... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2273bdf2adc3448fdce5b9fb9b921560aa404b16;p=clang

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

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@234509 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index 45729cf0ab..ee5018615c 100644
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -1274,6 +1274,8 @@ def mfprnd : Flag<["-"], "mfprnd">, Group<m_ppc_Features_Group>;
 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>;
diff --git a/test/Driver/ppc-features.cpp b/test/Driver/ppc-features.cpp
index 39d6357dcc..8ef8318469 100644
--- a/test/Driver/ppc-features.cpp
+++ b/test/Driver/ppc-features.cpp
@@ -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"