From a7c7b54dde5aa7fc37c5ceb70ab7c7ea3d77de0d Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Thu, 7 Apr 2011 00:58:44 +0000
Subject: [PATCH] Change -arm-divmod-libcall to a target neutral option.

llvm-svn: 129045
---
 llvm/include/llvm/Target/TargetOptions.h | 4 ++++
 llvm/lib/Target/ARM/ARMISelLowering.cpp  | 7 +------
 llvm/lib/Target/TargetMachine.cpp        | 6 ++++++
 llvm/test/CodeGen/ARM/divmod.ll          | 2 +-
 4 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/llvm/include/llvm/Target/TargetOptions.h b/llvm/include/llvm/Target/TargetOptions.h
index 97ceffdaecb8..fc80a06deba0 100644
--- a/llvm/include/llvm/Target/TargetOptions.h
+++ b/llvm/include/llvm/Target/TargetOptions.h
@@ -157,6 +157,10 @@ namespace llvm {
   /// wth earlier copy coalescing.
   extern bool StrongPHIElim;
 
+  /// HasDivModLibcall - This flag indicates whether the target compiler
+  /// runtime library has integer divmod libcalls.
+  extern bool HasDivModLibcall;
+
 } // End llvm namespace
 
 #endif
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 6ff57522f0e1..d030f68528ec 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -72,11 +72,6 @@ ARMInterworking("arm-interworking", cl::Hidden,
   cl::desc("Enable / disable ARM interworking (for debugging only)"),
   cl::init(true));
 
-static cl::opt<bool>
-UseDivMod("arm-divmod-libcall", cl::Hidden,
-  cl::desc("Use __{u}divmod libcalls for div / rem pairs"),
-  cl::init(false));
-
 void ARMTargetLowering::addTypeForNEON(EVT VT, EVT PromotedLdStVT,
                                        EVT PromotedBitwiseVT) {
   if (VT != PromotedLdStVT) {
@@ -398,7 +393,7 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
     setLibcallCallingConv(RTLIB::UDIV_I32, CallingConv::ARM_AAPCS);
   }
 
-  if (UseDivMod) {
+  if (HasDivModLibcall) {
     setLibcallName(RTLIB::SDIVREM_I32, "__divmodsi4");
     setLibcallName(RTLIB::UDIVREM_I32, "__udivmodsi4");
   }
diff --git a/llvm/lib/Target/TargetMachine.cpp b/llvm/lib/Target/TargetMachine.cpp
index 681842ea6b6c..8c7330a77c74 100644
--- a/llvm/lib/Target/TargetMachine.cpp
+++ b/llvm/lib/Target/TargetMachine.cpp
@@ -48,6 +48,7 @@ namespace llvm {
   bool RealignStack;
   bool DisableJumpTables;
   bool StrongPHIElim;
+  bool HasDivModLibcall;
   bool AsmVerbosityDefault(false);
 }
 
@@ -205,6 +206,11 @@ EnableStrongPHIElim(cl::Hidden, "strong-phi-elim",
   cl::desc("Use strong PHI elimination."),
   cl::location(StrongPHIElim),
   cl::init(false));
+static cl::opt<bool, true>
+UseDivMod("use-divmod-libcall",
+  cl::desc("Use __{u}divmod libcalls for div / rem pairs"),
+  cl::location(HasDivModLibcall),
+  cl::init(false));
 static cl::opt<bool>
 DataSections("fdata-sections",
   cl::desc("Emit data into separate sections"),
diff --git a/llvm/test/CodeGen/ARM/divmod.ll b/llvm/test/CodeGen/ARM/divmod.ll
index 9b5129771f8a..04b8fbf0f026 100644
--- a/llvm/test/CodeGen/ARM/divmod.ll
+++ b/llvm/test/CodeGen/ARM/divmod.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -mtriple=arm-apple-darwin -arm-divmod-libcall | FileCheck %s
+; RUN: llc < %s -mtriple=arm-apple-darwin -use-divmod-libcall | FileCheck %s
 
 define void @foo(i32 %x, i32 %y, i32* nocapture %P) nounwind ssp {
 entry:
-- 
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