[llvm] r240365 - AMDGPU: Use getAsInteger instead of atoi

[Matt Arsenault]

Author: arsenm
Date: Mon Jun 22 21:05:55 2015
New Revision: 240365

URL: http://llvm.org/viewvc/llvm-project?rev=240365&view=rev
Log:
AMDGPU: Use getAsInteger instead of atoi

Modified:
    llvm/trunk/lib/Target/AMDGPU/SIISelLowering.cpp

Modified: llvm/trunk/lib/Target/AMDGPU/SIISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/SIISelLowering.cpp?rev=240365&r1=240364&r2=240365&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/SIISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/SIISelLowering.cpp Mon Jun 22 21:05:55 2015
@@ -2211,8 +2211,9 @@ SDValue SITargetLowering::CreateLiveInRe
 
 std::pair<unsigned, const TargetRegisterClass *>
 SITargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
-                                               const std::string &Constraint,
+                                               const std::string &Constraint_,
                                                MVT VT) const {
+  StringRef Constraint(Constraint_);
   if (Constraint == "r") {
     switch(VT.SimpleTy) {
       default: llvm_unreachable("Unhandled type for 'r' inline asm constraint");
@@ -2232,8 +2233,9 @@ SITargetLowering::getRegForInlineAsmCons
     }
 
     if (RC) {
-      unsigned Idx = std::atoi(Constraint.substr(2).c_str());
-      if (Idx < RC->getNumRegs())
+      uint32_t Idx;
+      bool Failed = Constraint.substr(2).getAsInteger(10, Idx);
+      if (!Failed && Idx < RC->getNumRegs())
         return std::make_pair(RC->getRegister(Idx), RC);
     }
   }