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fix breakage from last night, simplify code.

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llvm-svn: 35560
This commit is contained in:
Chris Lattner 2007-04-01 20:49:36 +00:00
parent 60e3b13d20
commit 4fb170e47b
1 changed files with 6 additions and 15 deletions
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21
lib/Target/X86/X86TargetAsmInfo.cpp
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@ -17,6 +17,7 @@
#include "llvm/DerivedTypes.h"
#include "llvm/InlineAsm.h"
#include "llvm/Instructions.h"
#include "llvm/Intrinsics.h"
#include "llvm/Module.h"
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
@ -199,24 +200,14 @@ bool X86TargetAsmInfo::LowerToBSwap(CallInst *CI) const {
!CI->getType()->isInteger())
return false;
const Type *Ty = CI->getType();
const char *IntName;
if (const IntegerType *ITy = dyn_cast<IntegerType>(Ty)) {
unsigned BitWidth = ITy->getBitWidth();
if (BitWidth == 16)
IntName = "llvm.bswap.i16";
else if (BitWidth == 32)
IntName = "llvm.bswap.i32";
else if (BitWidth == 64)
IntName = "llvm.bswap.i64";
else
return false;
} else
const IntegerType *Ty = dyn_cast<IntegerType>(CI->getType());
if (!Ty || Ty->getBitWidth() % 16 != 0)
return false;
// Okay, we can do this xform, do so now.
const Type *Tys[] = { Ty, Ty };
Module *M = CI->getParent()->getParent()->getParent();
Constant *Int = M->getOrInsertFunction(IntName, Ty, Ty, (Type*)0);
Constant *Int = Intrinsic::getDeclaration(M, Intrinsic::bswap, Tys, 2);
Value *Op = CI->getOperand(1);
Op = new CallInst(Int, Op, CI->getName(), CI);