%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
+}