diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/FastISel.cpp | 2 | ||||
| -rw-r--r-- | test/CodeGen/X86/fast-isel-x86-64.ll | 9 |
2 files changed, 10 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp index 211c76b2f3..63e869960b 100644 --- a/lib/CodeGen/SelectionDAG/FastISel.cpp +++ b/lib/CodeGen/SelectionDAG/FastISel.cpp @@ -164,7 +164,7 @@ unsigned FastISel::materializeRegForValue(const Value *V, MVT VT) { Reg = getRegForValue(Constant::getNullValue(TD.getIntPtrType(V->getContext()))); } else if (const ConstantFP *CF = dyn_cast<ConstantFP>(V)) { - if (CF->isZero()) { + if (CF->isNullValue()) { Reg = TargetMaterializeFloatZero(CF); } else { // Try to emit the constant directly. diff --git a/test/CodeGen/X86/fast-isel-x86-64.ll b/test/CodeGen/X86/fast-isel-x86-64.ll index 40f90cf402..f7bfe722b3 100644 --- a/test/CodeGen/X86/fast-isel-x86-64.ll +++ b/test/CodeGen/X86/fast-isel-x86-64.ll @@ -251,3 +251,12 @@ entry: ; CHECK: callq _test20sret } declare void @test20sret(%struct.a* sret) + +; Check that -0.0 is not materialized using pxor +define void @test21(double* %p1) { + store double -0.0, double* %p1 + ret void +; CHECK: test21: +; CHECK-NOT: pxor +; CHECK: movsd LCPI +} |