RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2025-03-04 08:37:45 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

use autogenerated side-effect information

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26673 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-03-09 22:38:10 +00:00
parent 4e5f35973c
commit aeebe7f208
1 changed files with 5 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
lib/Transforms/Utils/Local.cpp
View File

@ -307,33 +307,11 @@ bool llvm::isInstructionTriviallyDead(Instruction *I) {
if (!I->mayWriteToMemory()) return true;
if (CallInst *CI = dyn_cast<CallInst>(I))
if (Function *F = CI->getCalledFunction())
switch (F->getIntrinsicID()) {
default: break;
case Intrinsic::returnaddress:
case Intrinsic::frameaddress:
case Intrinsic::stacksave:
case Intrinsic::isunordered_f32:
case Intrinsic::isunordered_f64:
case Intrinsic::bswap_i16:
case Intrinsic::bswap_i32:
case Intrinsic::bswap_i64:
case Intrinsic::ctpop_i8:
case Intrinsic::ctpop_i16:
case Intrinsic::ctpop_i32:
case Intrinsic::ctpop_i64:
case Intrinsic::ctlz_i8:
case Intrinsic::ctlz_i16:
case Intrinsic::ctlz_i32:
case Intrinsic::ctlz_i64:
case Intrinsic::cttz_i8:
case Intrinsic::cttz_i16:
case Intrinsic::cttz_i32:
case Intrinsic::cttz_i64:
case Intrinsic::sqrt_f32:
case Intrinsic::sqrt_f64:
return true; // These intrinsics have no side effects.
}
if (Function *F = CI->getCalledFunction()) {
#define GET_SIDE_EFFECT_INFO
#include "llvm/Intrinsics.gen"
#undef GET_SIDE_EFFECT_INFO
}
return false;
}