diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp index 3cd80cb04ab84..f6aaef2154322 100644 --- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -611,7 +611,7 @@ X86DAGToDAGISel::IsProfitableToFold(SDValue N, SDNode *U, SDNode *Root) const { // best of both worlds. if (U->getOpcode() == ISD::AND && Imm->getAPIntValue().getBitWidth() == 64 && - Imm->getAPIntValue().isIntN(32)) + Imm->getAPIntValue().isSignedIntN(32)) return false; // If this really a zext_inreg that can be represented with a movzx diff --git a/llvm/test/CodeGen/X86/pr48458.ll b/llvm/test/CodeGen/X86/pr48458.ll new file mode 100644 index 0000000000000..bca355961611b --- /dev/null +++ b/llvm/test/CodeGen/X86/pr48458.ll @@ -0,0 +1,17 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s + +define i1 @foo(i64* %0) { +; CHECK-LABEL: foo: +; CHECK: # %bb.0: # %top +; CHECK-NEXT: movq (%rdi), %rax +; CHECK-NEXT: andq $-2147483648, %rax # imm = 0x80000000 +; CHECK-NEXT: sete %al +; CHECK-NEXT: retq +top: + %1 = load i64, i64* %0, !range !0 + %2 = icmp ult i64 %1, 2147483648 + ret i1 %2 +} + +!0 = !{i64 0, i64 10000000000}