[ConstantFolding] Constant fold minimum and maximum intrinsics
Summary: Depends on D52764
Reviewers: aheejin, dschuff
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D52765
llvm-svn: 344796
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp
index c73250a..9ae8f17 100644
--- a/llvm/lib/Analysis/ConstantFolding.cpp
+++ b/llvm/lib/Analysis/ConstantFolding.cpp
@@ -1363,6 +1363,8 @@
case Intrinsic::fabs:
case Intrinsic::minnum:
case Intrinsic::maxnum:
+ case Intrinsic::minimum:
+ case Intrinsic::maximum:
case Intrinsic::log:
case Intrinsic::log2:
case Intrinsic::log10:
@@ -1912,6 +1914,18 @@
return ConstantFP::get(Ty->getContext(), maxnum(C1, C2));
}
+ if (IntrinsicID == Intrinsic::minimum) {
+ const APFloat &C1 = Op1->getValueAPF();
+ const APFloat &C2 = Op2->getValueAPF();
+ return ConstantFP::get(Ty->getContext(), minimum(C1, C2));
+ }
+
+ if (IntrinsicID == Intrinsic::maximum) {
+ const APFloat &C1 = Op1->getValueAPF();
+ const APFloat &C2 = Op2->getValueAPF();
+ return ConstantFP::get(Ty->getContext(), maximum(C1, C2));
+ }
+
if (!TLI)
return nullptr;
if ((Name == "pow" && TLI->has(LibFunc_pow)) ||