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Factor a long list of conditions into a predicate function. No functionality 

change.

llvm-svn: 160724
This commit is contained in:
Rafael Espindola 2012-07-25 13:35:45 +00:00
parent dfc8e52400
commit 2caee7f4d2
1 changed files with 15 additions and 6 deletions
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21
llvm/lib/Target/X86/X86FastISel.cpp
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@ -1516,6 +1516,20 @@ bool X86FastISel::X86SelectCall(const Instruction *I) {
return DoSelectCall(I, 0);
}
static unsigned computeBytesPopedByCalle(const X86Subtarget &Subtarget,
const ImmutableCallSite &CS) {
if (Subtarget.is64Bit())
return 0;
if (Subtarget.isTargetWindows())
return 0;
CallingConv::ID CC = CS.getCallingConv();
if (CC == CallingConv::Fast || CC == CallingConv::GHC)
return 0;
if (!CS.paramHasAttr(1, Attribute::StructRet))
return 0;
return 4;
}
// Select either a call, or an llvm.memcpy/memmove/memset intrinsic
bool X86FastISel::DoSelectCall(const Instruction *I, const char *MemIntName) {
const CallInst *CI = cast<CallInst>(I);
@ -1862,12 +1876,7 @@ bool X86FastISel::DoSelectCall(const Instruction *I, const char *MemIntName) {
// Issue CALLSEQ_END
unsigned AdjStackUp = TII.getCallFrameDestroyOpcode();
unsigned NumBytesCallee = 0;
if (!Subtarget->is64Bit() && !Subtarget->isTargetWindows() &&
!(CS.getCallingConv() == CallingConv::Fast ||
CS.getCallingConv() == CallingConv::GHC) &&
CS.paramHasAttr(1, Attribute::StructRet))
NumBytesCallee = 4;
const unsigned NumBytesCallee = computeBytesPopedByCalle(*Subtarget, CS);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(AdjStackUp))
.addImm(NumBytes).addImm(NumBytesCallee);