maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Add support to the C backend for llvm.prefetch. Patch contributed by 

Justin Wick!

llvm-svn: 20378
This commit is contained in:
Chris Lattner 2005-02-28 19:29:46 +00:00
parent 1772c1a672
commit 811107350a
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
llvm/lib/Target/CBackend/Writer.cpp
View File

@ -807,6 +807,7 @@ static void generateCompilerSpecificCode(std::ostream& Out) {
<< "#define LLVM_NANSF(NanStr) __builtin_nansf(NanStr) /* Float */\n"
<< "#define LLVM_INF __builtin_inf() /* Double */\n"
<< "#define LLVM_INFF __builtin_inff() /* Float */\n"
<< "#define LLVM_PREFETCH(addr,rw,locality) __builtin_prefetch(addr,rw,locality)\n"
<< "#else\n"
<< "#define LLVM_NAN(NanStr) ((double)0.0) /* Double */\n"
<< "#define LLVM_NANF(NanStr) 0.0F /* Float */\n"
@ -814,6 +815,7 @@ static void generateCompilerSpecificCode(std::ostream& Out) {
<< "#define LLVM_NANSF(NanStr) 0.0F /* Float */\n"
<< "#define LLVM_INF ((double)0.0) /* Double */\n"
<< "#define LLVM_INFF 0.0F /* Float */\n"
<< "#define LLVM_PREFETCH(addr,rw,locality) \n"
<< "#endif\n";
}
@ -1430,6 +1432,7 @@ void CWriter::lowerIntrinsics(Function &F) {
case Intrinsic::frameaddress:
case Intrinsic::setjmp:
case Intrinsic::longjmp:
case Intrinsic::prefetch:
// We directly implement these intrinsics
break;
default:
@ -1504,6 +1507,16 @@ void CWriter::visitCallInst(CallInst &I) {
writeOperand(I.getOperand(2));
Out << ')';
return;
case Intrinsic::prefetch:
// This is only supported on GCC for now...
Out << "LLVM_PREFETCH((const void *)";
writeOperand(I.getOperand(1));
Out << ", ";
writeOperand(I.getOperand(2));
Out << ", ";
writeOperand(I.getOperand(3));
Out << ")";
return;
}
}