[llvm-commits] [llvm] r98244 - in /llvm/trunk: lib/Target/X86/X86FastISel.cpp test/CodeGen/X86/object-size.ll

[Eric Christopher]

Author: echristo
Date: Thu Mar 11 00:20:22 2010
New Revision: 98244

URL: http://llvm.org/viewvc/llvm-project?rev=98244&view=rev
Log:
Have fast-isel understand llvm.objectsize.  Update testcase for slightly
different codegen.

Modified:
    llvm/trunk/lib/Target/X86/X86FastISel.cpp
    llvm/trunk/test/CodeGen/X86/object-size.ll

Modified: llvm/trunk/lib/Target/X86/X86FastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86FastISel.cpp?rev=98244&r1=98243&r2=98244&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86FastISel.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86FastISel.cpp Thu Mar 11 00:20:22 2010
@@ -1166,6 +1166,30 @@
   // FIXME: Handle more intrinsics.
   switch (I.getIntrinsicID()) {
   default: return false;
+  case Intrinsic::objectsize: {
+    ConstantInt *CI = dyn_cast<ConstantInt>(I.getOperand(2));
+    const Type *Ty = I.getCalledFunction()->getReturnType();
+    
+    assert(CI && "Non-constant type in Intrinsic::objectsize?");
+    
+    EVT VT;
+    if (!isTypeLegal(Ty, VT))
+      return false;
+    
+    unsigned OpC = 0;
+    if (VT == MVT::i32)
+      OpC = X86::MOV32ri;
+    else if (VT == MVT::i64)
+      OpC = X86::MOV64ri;
+    else
+      return false;
+    
+    unsigned ResultReg = createResultReg(TLI.getRegClassFor(VT));
+    BuildMI(MBB, DL, TII.get(OpC), ResultReg).
+                                  addImm(CI->getZExtValue() == 0 ? -1ULL : 0);
+    UpdateValueMap(&I, ResultReg);
+    return true;
+  }
   case Intrinsic::dbg_declare: {
     DbgDeclareInst *DI = cast<DbgDeclareInst>(&I);
     X86AddressMode AM;

Modified: llvm/trunk/test/CodeGen/X86/object-size.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/object-size.ll?rev=98244&r1=98243&r2=98244&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/object-size.ll (original)
+++ llvm/trunk/test/CodeGen/X86/object-size.ll Thu Mar 11 00:20:22 2010
@@ -12,7 +12,7 @@
   %tmp = load i8** @p                             ; <i8*> [#uses=1]
   %0 = call i64 @llvm.objectsize.i64(i8* %tmp, i1 0) ; <i64> [#uses=1]
   %cmp = icmp ne i64 %0, -1                       ; <i1> [#uses=1]
-; X64: movq    $-1, %rax
+; X64: movabsq $-1, %rax
 ; X64: cmpq    $-1, %rax
   br i1 %cmp, label %cond.true, label %cond.false