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;
}