diff --git a/llvm/test/CodeGen/X86/or-lea.ll b/llvm/test/CodeGen/X86/or-lea.ll --- a/llvm/test/CodeGen/X86/or-lea.ll +++ b/llvm/test/CodeGen/X86/or-lea.ll @@ -792,3 +792,34 @@ %or = or i64 %sext, 8 ret i64 %or } + +define i64 @or_large_constant(i64 %x) { +; X86-LABEL: or_large_constant: +; X86: # %bb.0: # %entry +; X86-NEXT: xorl %edx, %edx +; X86-NEXT: movl $1, %eax +; X86-NEXT: cmpl {{[0-9]+}}(%esp), %eax +; X86-NEXT: movl $0, %eax +; X86-NEXT: sbbl {{[0-9]+}}(%esp), %eax +; X86-NEXT: setl %al +; X86-NEXT: movzbl %al, %eax +; X86-NEXT: negl %eax +; X86-NEXT: sbbl %edx, %edx +; X86-NEXT: orl $1, %eax +; X86-NEXT: orl $128, %edx +; X86-NEXT: retl +; +; X64-LABEL: or_large_constant: +; X64: # %bb.0: # %entry +; X64-NEXT: xorl %eax, %eax +; X64-NEXT: cmpq $2, %rdi +; X64-NEXT: setl %al +; X64-NEXT: leaq -1(%rax,%rax), %rax +; X64-NEXT: retq +entry: + %cmp = icmp sgt i64 %x, 1 + %zext = zext i1 %cmp to i64 + %sub = sub i64 0, %zext + %or = or i64 %sub, 549755813889 ; 0x8000000001 + ret i64 %or +}